CN218616251U - Multifunctional automobile key expansion system - Google Patents
Multifunctional automobile key expansion system Download PDFInfo
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- CN218616251U CN218616251U CN202222887609.8U CN202222887609U CN218616251U CN 218616251 U CN218616251 U CN 218616251U CN 202222887609 U CN202222887609 U CN 202222887609U CN 218616251 U CN218616251 U CN 218616251U
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Abstract
The utility model discloses a multifunctional automobile key expansion system, which comprises a master control MCU module, an on-board key unit, a signal detection unit, a key control unit and an on-board key signal unit; a power management unit; the first vehicle-mounted key unit transmits a key instruction to the main control MCU module through the first signal detection unit and the first key control unit; and the main control MCU module transmits the processed key instruction to a third vehicle-mounted key unit through a third key control unit and a third signal detection unit. The utility model provides a vehicle button function line extension on the basis of keeping original button function, realizes the simulation or adds other function button through the operation of expanding multiple button, controls vehicle function more nimble, uses a more convenient multi-functional extended system of car button.
Description
Technical Field
The utility model relates to a car button control technical field, in particular to multi-functional extended system of car button.
Background
At present, keys (commonly, keys such as up, down, left, right, confirmation, exit, cruise, S +, S-, volume +, volume-, telephone, double flash, start-stop, parking and the like) on a steering wheel or a driving platform of an automobile are mainly placed close to a main driving position, but as the functions of the automobile are more and more abundant, more and more keys are needed to control or start and close the functions. Some function keys are far away from the main driving position, so that the control is inconvenient when the automobile is driven.
In order to ensure the driving safety during the driving of the vehicle, the driver needs to be unable to move his body or to look away from the front to control the keys that are relatively far away, so that the driver is most safe to control the steering wheel or the keys closest to the steering wheel. But the steering wheel either has fixed or limited functionality for the keys closest to the steering wheel.
Therefore, a system is needed to expand the functions of these keys, and on the basis of keeping the original functions, the simulation or addition of other functional keys is realized by expanding various key operations (such as double-click, multi-click, long-press, etc.); or simulating the functional action of the keys in the vehicle according to some external keys.
SUMMERY OF THE UTILITY MODEL
In view of this, the main objective of the present invention is to provide a vehicle key function extension, which realizes simulation or adds other function keys by extending multiple key operations on the basis of keeping the original key functions, so as to control the vehicle functions more flexibly and use a more convenient automobile key multifunctional extension system.
In order to achieve the purpose of the utility model, the utility model provides an automobile key multifunctional expansion system, which comprises a master control MCU module, a first vehicle-mounted key unit, a second vehicle-mounted key unit and a third vehicle-mounted key unit; the device comprises a first signal detection unit, a second signal detection unit and a third signal detection unit; the first key control unit, the second key control unit and the third key control unit; a vehicle-mounted key signal unit; a power management unit;
the main control MCU module is used for processing the key state information and sending a key action instruction; the vehicle-mounted key unit is used for outputting a key instruction; the signal detection unit is used for detecting key state information; the key control unit is used for controlling key instruction signals; the vehicle-mounted key signal unit is used for processing the signal information of the vehicle-mounted key unit; the power management unit is used for providing power for the main control MCU module;
the first vehicle-mounted key unit transmits a key instruction to the main control MCU module through the first signal detection unit and the first key control unit; the third signal detection unit transmits a key instruction to the main control MCU module through the third key control unit;
the main control MCU module transmits the processed key instruction to a second vehicle-mounted key unit through a second key control unit and a second signal detection unit; and the main control MCU module transmits the processed key instruction to a third vehicle-mounted key unit through a third key control unit and a third signal detection unit.
The master control MCU module is a chip with the model of MM32F0010A 1T.
The third vehicle-mounted key unit comprises a key cruise key unit, a collision early warning key unit and a lane deviation key unit.
The utility model also comprises a fourth vehicle-mounted key unit, wherein the fourth vehicle-mounted key unit comprises a fourth signal detection unit and a fourth key control unit; and the main control MCU module transmits the processed instruction signal to a fourth vehicle-mounted key unit through a fourth signal detection unit and a fourth key control unit.
The master control MCU module comprises a voice recognition instruction unit; the voice recognition instruction unit is used for converting the voice signal into an instruction signal.
The voice recognition instruction unit comprises a digital-to-analog conversion unit; the digital-to-analog conversion unit is used for converting the digital signal into an analog signal.
The main control MCU module comprises a gesture recognition instruction processing unit which is used for converting gesture signals into instruction signals.
The gesture recognition instruction processing unit comprises a gesture sensor and a gesture action analysis unit; and the gesture sensor transmits gesture information to the gesture recognition instruction processing unit through the gesture action analysis unit.
The master control MCU module comprises a wireless transmission receiver.
The utility model provides a technical scheme's beneficial effect is: 1) The utility model discloses the third vehicle-mounted key unit transmits the key instruction to the main control MCU module; the main control MCU module processes the received key command and then simulates corresponding key actions through the third key control unit and sends the key actions to the vehicle-mounted key signal unit, or respectively transmits the key actions to the first vehicle-mounted key control unit and the second key control unit to simulate the corresponding key actions; the vehicle key function expansion is realized, on the basis of keeping the original key function, simulation or addition of other function keys is realized by expanding various key operations, the vehicle control function is more flexible, and the use is more convenient; 2) The utility model has reasonable circuit structure and low cost; 3) The utility model discloses the function is various, and the reliability is high, is suitable for general popularization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a system block diagram of an automobile key multifunctional expansion system according to an embodiment of the present invention;
fig. 2 is another system block diagram of the multifunctional automobile key expansion system according to the embodiment of the present invention;
fig. 3 is an electronic circuit diagram of a main control MCU module of the multifunctional automotive key extension system according to the present invention;
fig. 4 is an electronic circuit diagram of a power management unit of the multifunctional automobile key extension system according to an embodiment of the present invention;
fig. 5 is an electronic circuit diagram of a first signal detection unit of the multifunctional automobile key extension system according to the embodiment of the present invention;
fig. 6 is an electronic circuit diagram of a second key control unit of the multifunctional automotive key expansion system according to the embodiment of the present invention;
fig. 7 is an electronic circuit diagram of a third signal detecting unit of the multifunctional automotive key extension system according to the embodiment of the present invention;
fig. 8 is an electronic diagram of a third key control unit of the multifunctional automotive key expansion system according to the embodiment of the present invention;
fig. 9 is an electronic circuit diagram of a fourth push signal detecting unit of the multifunctional automotive key extension system according to the embodiment of the present invention;
fig. 10 is an electronic diagram of a third key control unit of the multifunctional automotive key expansion system according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a multi-functional extended system of car button.
Referring to fig. 1 to 10, in an embodiment of the present invention, the multifunctional automobile key extension system includes a main control MCU module 10, a first vehicle-mounted key unit 20, a second vehicle-mounted key unit 30, and a third vehicle-mounted key unit 40; a first signal detection unit 21, a second signal detection unit 31, a third signal detection unit 41; a first key control unit 22, a second key control unit 32, a third key control unit 42; an in-vehicle key signal unit 50; a power management unit 101;
the main control MCU module 10 is used for processing key state information and sending a key action instruction; the vehicle-mounted key unit is used for outputting a key instruction; the signal detection unit is used for detecting key state information; the key control unit is used for controlling key instruction signals; the vehicle-mounted key signal unit 50 is used for processing the signal information of the vehicle-mounted key unit; the power management unit 101 is configured to provide power to the main control MCU module:
the first vehicle-mounted key unit 20 transmits the key instruction to the main control MCU module 10 through the first signal detection unit 21 and the first key control unit 22; the third signal detection unit 41 transmits the key instruction to the main control MCU module 10 through the third key control unit 42;
the main control MCU module 10 transmits the processed key command to the second vehicle-mounted key unit through the second key control unit 32 and the second signal detection unit 31; the main control MCU module 10 further transmits the processed key command to the third on-board key unit 40 through the third key control unit 42 and the third signal detection unit 41.
In this embodiment, preferably, the main control MCU module is a chip with a model of MM32F0010 A1T.
In this embodiment, the first on-board key unit 20 includes a steering wheel OK key; the first vehicle-mounted KEY unit 20 is connected to the signal line KEY-1A, and the voltage is 12V when the first vehicle-mounted KEY unit 20 is released and 0V when the KEY is pressed.
The first signal detection unit 21 is connected to the first vehicle-mounted KEY unit through the signal line KEY-1A, and can detect a voltage change of the signal line KEY-1A.
The second vehicle-mounted key unit 30 includes a double-flash key; the second vehicle-mounted key unit 30 operates in a clicking mode, one clicking operation is to open the double flash, the other clicking operation is to close the double flash, and the main control MCU module 10 can control the double flash to open and close by controlling the second vehicle-mounted key unit 30 to simulate the clicking operation.
Referring to fig. 1 and 2, the first vehicle-mounted key unit 20 is connected to the vehicle-mounted signal processing unit 50, the first signal detection unit 20 is connected to a signal line, and the key is determined to be pressed or released by detecting the voltage of the signal line, and the vehicle key signal receiving module determines that the key is pressed when detecting a low level voltage.
In this embodiment, the present invention defines that when a double click of the OK button on the steering wheel is detected, a double flash operation is performed;
in this embodiment, the first vehicle-mounted KEY unit 20 detects a change in KEY operation, when a single click or other operations are detected, the main control MCU module 10 does not process the change, and if a double click is detected, the second vehicle-mounted KEY unit 30 controls the signal line KEY-2A of the double flash to generate a low level of 250 milliseconds, so as to simulate the single click operation of the second vehicle-mounted KEY unit 30 of the double flash.
In this embodiment, preferably, the third in-vehicle key unit 40 includes a constant speed cruise key unit 401, a collision warning key unit 402, and a lane offset key unit 403.
The third vehicle-mounted key unit 40, the vehicle-mounted key signal processing unit 50 and the third signal detection unit 41 share one signal line, a voltage division circuit consisting of a plurality of resistors is arranged inside three keys of the constant-speed cruise key unit 401, the collision early warning key unit 402 and the lane deviation key unit 403, each key is distributed with resistors with different resistance values to enable the signal line to output different voltages, and the vehicle key signal receiving module determines the type of a pressed single key according to the detected different voltages.
The main control module 10 transmits the instruction signal to the cruise control button unit 401, the collision warning button unit 402 and the lane departure button unit 403 through the third button control unit 42 and the third signal detection unit 41, respectively.
In this embodiment, the constant-speed cruise KEY unit 401 is connected to the third signal detection unit 41 through a signal line KEY-3A-1; the collision early warning KEY unit 402 is connected with the third signal detection unit 41 through a signal line KEY-3A-2; the lane offset KEY unit 403 is connected with the third signal detection unit 41 through a signal line KEY-3A-3; the cruise control KEY unit 401, the collision warning KEY unit 402 and the lane departure KEY unit 403 may share one signal line KEY-3B, and when the third in-vehicle KEY unit 40 is used
The voltages of the constant speed cruise key unit 401, the collision early warning key unit 402 and the lane deviation key unit 403 are 0V, 1.5V and 3.5V, respectively;
the normal operations of the constant-speed-cruise key unit 401, the collision pre-warning key unit 402, and the lane offset key unit 403 are all single-clicking. For example, the function of the cruise control key unit 401 may be switched on or off. When the cruise control key unit 401 is double-clicked, multi-clicked or long-clicked, the corresponding functions are not available, and then other operations can be set as other functions, for example, the cruise control key unit 401 is clicked to keep the original functions on and off, double clicking can be set to turn on the double-flashing function, and multi-clicking is an on motion mode.
In this embodiment, the utility model discloses the definition detects and carries out two flashing actions when constant speed cruise key unit 401 double-click, carries out opening or closing of motion pattern when hitting more.
When the utility model discloses the function extension above need realizing, through the control of master control MCU module 10, go to realize this function through third signal detection unit 41 and third button the control unit 42.
First, the third signal detection unit 41 and the third key control unit 42 are composed of two parts of signal detection and signal simulation. The signal line KEY-3A-1 of the original constant-speed cruise KEY unit 401, the signal line KEY-3A-2 of the collision early-warning KEY unit 402, the signal line KEY-3A-3 of the lane deviation KEY unit 403 and the signal line KEY-3B are disconnected and are respectively connected to a third signal detection unit 41, the third signal detection unit 41 is used for detecting the actions of the signal line KEY-3A-1 of the constant-speed cruise KEY unit 401, the signal line KEY-3A-2 of the collision early-warning KEY unit 402, the signal line KEY-3A-3 of the lane deviation KEY unit 403 and the signal line KEY-3B, and the third KEY control unit 42 is used for restoring the actions corresponding to the KEYs of the signal line KEY-3A-1 of the constant-speed cruise KEY unit 401, the signal line KEY-3A-2 of the collision early-warning KEY unit 402 and the signal line KEY-3B.
For example, if the third signal detecting unit 41 detects a voltage of 0V and the operation is a single click, it knows that the KEY is the signal line KEY-3A-1 of the cruise control KEY unit 401, and the operation is a normal function switch operation, which is a single click operation that needs to forward and output a voltage of 0V through the third KEY control unit 42; if the third signal detecting unit 41 detects a voltage of 0V and the operation is double-click, it knows that the KEY is the signal line KEY-3A-1 of the cruise control KEY unit 401, but the double-click operation does not require forwarding, but the main control MCU module 10 defines the double-click operation of the cruise control KEY unit 401 as controlling the double-flash operation, so the operation is the double-flash operation.
The second vehicle-mounted key unit 30 includes a double-flash key; the second vehicle-mounted key unit 30 operates in a clicking mode, one clicking operation is to open the double flash, the other clicking operation is to close the double flash, and the main control MCU module 10 can control the double flash to open and close by controlling the second vehicle-mounted key unit 30 to simulate the clicking operation.
In this embodiment, preferably, the present invention further includes a fourth vehicle-mounted key unit 80, where the fourth vehicle-mounted key unit 80 includes a fourth signal detection unit 81 and a fourth key control unit 82; the main control MCU module 10 transmits the processed command signal to the fourth vehicle-mounted key unit 80 through the fourth signal key control unit 42 and the fourth signal detection unit 41.
In this embodiment, the main control MCU module 10 may further transmit the processed signal instruction to the vehicle-mounted key signal processing unit 50 through the fourth signal key control unit 42 and the fourth signal detection unit 41.
In this embodiment, the utility model discloses double click can switch two states a bit for the car button, for example open and stop the button, can open according to once, then can become to close according to once more. At this time, the fourth signal key control unit 42 and the fourth signal detection unit 41 may be used. The voltage is 12V when the start-stop key is loosened, and the voltage is 0V when the key is pressed.
In this embodiment, the main control MCU module 10 connects the command signal to the signal line KEY-4A through the fourth signal KEY control unit 42 and the fourth signal detection unit 41 for detecting the voltage change of the signal line KEY-4A, and the fourth signal detection unit 41 is connected to the signal line KEY-4B.
This embodiment, the utility model discloses the definition detects to open when opening and stopping the button double click, carries out two sudden strain of a muscle operations.
The fourth signal detecting unit 41 detects the action change of the KEY signal line KEY-4A, and when the click operation is detected, the main control MCU module 10 controls the control signal line KEY-4B to output a low level time at the same time through the fourth signal KEY control unit 42 and the analog unit in the fourth signal detecting unit 41, that is, simulates a click action at the same time; if a double-click action is detected, the host will filter out the action event, and will not control the signal line KEY-4B, but control the signal line KEY-2A of the double flash to have a low level of 250 ms through the second signal detection unit 31, so as to simulate the single-click operation of the second onboard KEY unit 30 of the double flash.
Referring to fig. 1 and fig. 2, in this embodiment, preferably, the main control MCU module 10 includes a voice recognition instruction unit 52; the voice recognition instruction unit 52 is used to convert the voice signal into an instruction signal.
In this embodiment, the voice recognition instruction unit 52 is preferably a chip with model number LU-ASR01
In this embodiment, further, preferably, the voice recognition instruction unit 52 includes a digital-to-analog conversion unit 51; the digital-to-analog conversion unit 51 is used to convert a digital signal into an analog signal.
In this embodiment, preferably, the digital-to-analog conversion unit 51 is a chip with a model of PCM 5102A.
In this embodiment, the utility model discloses can pass through this master control MCU module 10 transmission instruction of speech signal control. The utility model discloses can external microphone 50 transmit speech information to speech recognition instruction unit 52 through digital analog conversion unit 51, this speech recognition instruction unit 52 can be with speech information conversion for this host system of instruction information control.
The utility model can simulate the key-press in the vehicle by using the key-press in the vehicle, for example, connect the voice recognition unit, the main control MCU module 10 analyzes the data received by the digital-analog conversion unit 51 through the voice recognition command unit 52 to execute the corresponding action; for example, after recognizing the command of opening the double flash voice, the double flash operation is executed.
In the present embodiment, preferably, the main control MCU module 10 includes a gesture recognition instruction processing unit 62, and the gesture recognition instruction processing unit 62 is configured to convert a gesture signal into an instruction signal.
In this embodiment, it is further preferable that the gesture recognition instruction processing unit 62 includes a gesture sensor 60 and a gesture action parsing unit 61; the gesture sensor 61 transmits the gesture information to the gesture recognition command processing unit 62 through the gesture motion analysis unit 61.
In this embodiment, the gesture recognition command processing unit 62 is preferably a chip with model number GY-PAJ7620U2
In this embodiment, the gesture sensor 61 may collect gesture information, transmit the gesture information to the gesture recognition instruction processing unit 62 through the gesture action analyzing unit 61, and then control the main control MCU module 10 to transmit an instruction signal.
The utility model can simulate the keys in the vehicle by using the external gesture recognition module except the keys in the vehicle, for example, the gesture recognition command unit 62 is connected, and the main control MCU module 10 analyzes the data received by the gesture action analysis unit 61 through the gesture recognition command unit 62 to execute the corresponding action; for example, the navigation volume reduction operation can be executed by recognizing the movement of the palm of the hand stroking from right to left; the navigation volume increasing operation can be executed by recognizing the movement of the palm stroking from left to right.
In this embodiment, preferably, the main control MCU module 10 includes a wireless transmission receiver 102.
In this embodiment, the wireless transceiver 102 is preferably a chip with a model of "smart-R2".
In this embodiment, the present invention may include a remote controller 70, wherein the remote controller 70 includes a wireless transmitter 71; the remote controller 70 transmits the command signal to the wireless transmission receiver 102 through the wireless transmission transmitter 71; the remote controller 70 controls the main control MCU module 10 through the wireless transceiver 102.
The utility model discloses except using button in the car, also can use external button to simulate button in the car, for example through the data that remote controller 70 control master control MCU module 10 received, carry out two operations of dodging.
After the key function of the utility model is expanded, not only the keys in the automobile can be controlled, but also the equipment connected with the host can be controlled, for example, the atmosphere in the automobile can be connected with the host, and the mode of the atmosphere lamp can be switched by using the double-click function; the host is accessed to the plug-in television function restriction canceling system, and the television function can be switched on and off by using a double-click function; the host is connected into the externally hung 360-degree panoramic camera, and the peripheral conditions of the vehicle can be watched by using the double-click function.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, all under the inventive concept, utilize the equivalent structure transformation made by the contents of the specification and the drawings, or directly/indirectly use in other related technical fields all included in the patent protection scope of the present invention.
Claims (9)
1. The utility model provides a multi-functional extended system of car button which characterized in that: the vehicle-mounted key device comprises a master control MCU module, a first vehicle-mounted key unit, a second vehicle-mounted key unit and a third vehicle-mounted key unit; the device comprises a first signal detection unit, a second signal detection unit and a third signal detection unit; the first key control unit, the second key control unit and the third key control unit; a vehicle-mounted key signal unit; a power management unit;
the main control MCU module is used for processing the key state information and sending a key action instruction; the vehicle-mounted key unit is used for outputting a key instruction; the signal detection unit is used for detecting key state information; the key control unit is used for controlling key instruction signals; the vehicle-mounted key signal unit is used for processing the signal information of the vehicle-mounted key unit; the power management unit is used for providing power for the main control MCU module;
the first vehicle-mounted key unit transmits a key instruction to the main control MCU module through the first signal detection unit and the first key control unit; the third signal detection unit transmits the key instruction to the main control MCU module through the third key control unit;
the main control MCU module transmits the processed key instruction to a second vehicle-mounted key unit through a second key control unit and a second signal detection unit; and the main control MCU module transmits the processed key instruction to a third vehicle-mounted key unit through a third key control unit and a third signal detection unit.
2. The multifunctional automotive key expansion system according to claim 1, characterized in that: the master control MCU module is a chip with the model of MM32F0010A 1T.
3. The multifunctional automotive key expansion system according to claim 2, characterized in that: the third vehicle-mounted key unit comprises a key cruise key unit, a collision early warning key unit and a lane deviation key unit.
4. The multifunctional automotive key expansion system according to claim 3, characterized in that: the vehicle-mounted keyboard comprises a first vehicle-mounted key unit, a second vehicle-mounted key unit and a keyboard, wherein the first vehicle-mounted key unit comprises a first signal detection unit and a first key control unit; and the main control MCU module transmits the processed instruction signal to a fourth vehicle-mounted key unit through a fourth signal detection unit and a fourth key control unit.
5. The multifunctional automotive key expansion system according to claim 4, characterized in that: the master control MCU module comprises a voice recognition instruction unit; the voice recognition instruction unit is used for converting the voice signal into an instruction signal.
6. The multifunctional automotive key expansion system according to claim 5, characterized in that: the voice recognition instruction unit comprises a digital-to-analog conversion unit; the digital-to-analog conversion unit is used for converting the digital signal into an analog signal.
7. The multifunctional automotive key expansion system according to claim 6, characterized in that: the main control MCU module comprises a gesture recognition instruction processing unit which is used for converting gesture signals into instruction signals.
8. The multifunctional automobile key extension system of claim 7, wherein: the gesture recognition instruction processing unit comprises a gesture sensor and a gesture action analysis unit; the gesture sensor transmits gesture information to the gesture recognition instruction processing unit through the gesture action analyzing unit.
9. The multifunctional automotive key expansion system according to claim 8, characterized in that: the master control MCU module comprises a wireless transmission receiver.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222887609.8U CN218616251U (en) | 2022-10-31 | 2022-10-31 | Multifunctional automobile key expansion system |
| JP2022004250U JP3241038U (en) | 2022-10-31 | 2022-12-26 | Automotive switch multi-function expansion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222887609.8U CN218616251U (en) | 2022-10-31 | 2022-10-31 | Multifunctional automobile key expansion system |
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| CN218616251U true CN218616251U (en) | 2023-03-14 |
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| CN202222887609.8U Active CN218616251U (en) | 2022-10-31 | 2022-10-31 | Multifunctional automobile key expansion system |
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| JP (1) | JP3241038U (en) |
| CN (1) | CN218616251U (en) |
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- 2022-10-31 CN CN202222887609.8U patent/CN218616251U/en active Active
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