CN112158161A - Control device and method for automobile falling-into-water door opening - Google Patents
Control device and method for automobile falling-into-water door opening Download PDFInfo
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- CN112158161A CN112158161A CN202010946148.XA CN202010946148A CN112158161A CN 112158161 A CN112158161 A CN 112158161A CN 202010946148 A CN202010946148 A CN 202010946148A CN 112158161 A CN112158161 A CN 112158161A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J5/00—Doors
- B60J5/04—Doors arranged at the vehicle sides
- B60J5/0493—Appurtenances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/0002—Type of accident
- B60R2021/0016—Fall in water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01204—Actuation parameters of safety arrangents
- B60R2021/01252—Devices other than bags
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention provides a control device for opening an automobile door when the automobile falls into water, which is matched with a handle to open the automobile door after the automobile falls into water. The invention judges whether the automobile is in a water falling state or not based on a sensing device, and triggers the linkage of an air bag ejection mechanism after receiving a control signal from an automobile handle, wherein the air bag ejection mechanism is arranged on the outer edge of the automobile door matched with an automobile body; the air bag ejection mechanism forms thrust after being instantaneously expanded to act on a vehicle body and generate reaction force for opening a vehicle door. The invention has simple structure, convenient use and high safety factor, can effectively ensure the property and life safety of personnel involved in the accident and has extremely high commercial value.
Description
Technical Field
The invention belongs to the technical field of automobile safety system application, and particularly relates to a control device and a control method for an automobile falling into water to open a door.
Background
The sealing performance of most automobiles in the market is good, and the glass and the sealing strips isolate the interior of the automobile from the exterior of the automobile. When the automobile falls into water, the water cannot flow into the automobile quickly due to the good sealing performance of the automobile. Under the action of water, the pressure difference between the interior and the exterior of the automobile exists, the pressure of the water can tightly fix the automobile door, and the automobile door cannot be easily opened at this time.
Just as the patent of application No. 201210156532.5 "glass safety self-bursting device when car falls into water", a device for emergency escape is disclosed, which can make the personnel in the car escape from the window by breaking the glass of the car, but because the window size of each car is different and the volume of the personnel in the car is also different, the escape difficulty of the personnel in the car can be increased by the way of escaping from the window, and in practice, the water enters the car to form a backward flow, which is not suitable for any scene.
Just like the patent of application No. 201510229894.6 "passenger's safe escape system and control method after car falls into water", it makes the car turn over to forward state through control to it opens to control skylight, door window, luggage hatch door, provides a plurality of channels for the passenger to flee from the car, but as is known well known, when the car enters into water, because a large amount of water gets into the inside of automobile body, can probably cause the interior electric system of car to be malfunctioning, even control makes the car turn over to forward state, also can miss golden time of fleing because can't open each passway of fleing.
Just like the patent of application No. 201920627459.2 "a family car door system of fleing of falling into water", it is through ascertaining that the vehicle is in the state of falling into water after, control system makes the gasbag open, and then makes the door float owing to the buoyancy that the gasbag produced, and accident personnel can float on with the help of having the door of buoyancy, flee. However, in such a scenario, the accident personnel cannot escape quickly within an effective time, but a safety measure that the dangerous accident that the vehicle falls into the water is within a controllable range cannot actually solve the safety problem of the accident personnel, and has certain limitations.
At present, a technical scheme capable of solving the technical problems is not provided, an electric power system in a vehicle is not limited, a physical explosive force is generated to open a vehicle door, so that accident personnel can finish self rescue in any environment, and specifically, a control device and a method for controlling the vehicle to open the door when falling into water are absent.
Disclosure of Invention
The invention aims to provide a control device and a control method for an automobile falling-in-water door, aiming at the technical defects in the prior art, and according to one aspect of the invention, the control device for the automobile falling-in-water door is provided, and the control device is matched with a vehicle handle to open the vehicle door after detecting that the automobile falls in water, and comprises a vehicle door and a vehicle body, wherein the vehicle door at least comprises the vehicle handle and an air bag ejection mechanism, and the vehicle handle is in communication connection with the air bag ejection mechanism.
Preferably, the airbag ejection mechanism includes at least an ignition device and a gas generating agent, the ignition device being communicatively coupled to the handlebar.
Preferably, the vehicle doors at least comprise a main driver door, a secondary driver door and two-side rear-seat doors.
Preferably, the vehicle body further comprises a sensing device, and the sensing device is arranged at the bottom of a vehicle door, which is matched with the vehicle body, of the vehicle door.
Preferably, the sensing means comprises the following:
-a pressure sensor;
-an acceleration sensor;
-a water level sensor;
-a gyroscope;
-a GPS; or
-a displacement sensor.
Preferably, the vehicle body further comprises an active panic button for responding to and confirming that the vehicle is in a drowning state.
Preferably, the airbag ejection mechanism is wrapped inside the vehicle door and sealed with a waterproof member.
According to another aspect of the invention, a control method for opening a door by falling into water of an automobile is provided, the control device is adopted to realize the opening of an automobile door by matching with an automobile handle after the automobile falls into water, and the method comprises the following steps:
a. judging whether the automobile is in a water falling state or not based on the sensing device, if so, executing the step b;
b. triggering the linkage of an air bag ejection mechanism after receiving a control signal from a vehicle handle, wherein the air bag ejection mechanism is arranged on the outer edge of a vehicle door matched with a vehicle body;
c. the air bag ejection mechanism forms thrust after being instantaneously expanded to act on a vehicle body and generate reaction force for opening a vehicle door.
Preferably, in the step b, the control signal of the handlebar is a door opening signal conducted when the handlebar is pulled, pressed or rotated.
Preferably, in the step c, the reaction force for opening the vehicle door is at least greater than 150 kg.
The invention provides a control device for opening an automobile door when the automobile falls into water, which is matched with a handle to open the automobile door after the automobile falls into water. The invention has simple structure, convenient use and high safety factor, can effectively ensure the property and life safety of personnel involved in the accident and has extremely high commercial value.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a control device for a vehicle door falling into water according to an embodiment of the invention;
fig. 2 is a schematic view showing a door structure of a control device for a vehicle drop-in door opening according to a first embodiment of the present invention; and
fig. 3 is a schematic flow chart illustrating a method for controlling a door of an automobile falling into water according to an embodiment of the present invention.
Detailed Description
In order to better and clearly show the technical scheme of the invention, the invention is further described with reference to the attached drawings.
Fig. 1 is a schematic structural diagram of a control device for a vehicle door opening in a water-falling mode according to a specific embodiment of the present invention, and fig. 2 is a schematic structural diagram of a vehicle door of the control device for the vehicle door opening in the water-falling mode according to a first embodiment of the present invention. The sensor senses the collision strength of the automobile and transmits sensed signals to the controller, the controller receives and processes the signals of the sensor, when the controller judges that the airbag needs to be opened, the controller immediately sends out ignition signals to trigger the gas generator, and after the gas generator receives the ignition signals, the ignition well quickly generates a large amount of gas to inflate the airbag. When the impact sensor detects impact, the related control system judges the collision degree to determine whether to trigger the inflator, and the inflator is usually composed of gas generating agents such as gasoline or explosive and the like and an ignition device. For disposal safety, the airbag is usually detonated only at high temperature. Because the impact process is very short, the airbag is generally triggered to complete the inflation process for about 25-35 milliseconds. Prolonged inflation times can lose their effectiveness.
However, the technical point of the present invention is different from the working principle of the airbag, in that the present invention triggers the gas generator not by impact sensing but by the linkage of the handle and the sensing device, and in the working principle of the airbag, the airbag can exhaust through the small hole continuously, but in the present application, similar operations are not required.
That is, those skilled in the art will appreciate that the disclosed airbag ejection mechanism 12 is preferably identical to prior art airbag ejection mechanisms, having an ignition device in communicative connection with the vehicle handle, and a gas generant. The airbag ejection mechanism 12 is covered inside the vehicle door and sealed by a waterproof piece, in the invention, the airbag ejection mechanism is arranged at the outer edge of the vehicle door matched with the vehicle body, as shown in fig. 2, one or more airbag ejection mechanisms can be arranged, one or more airbags in the airbag ejection mechanism can be arranged, once a control signal from a vehicle handle is received, the airbag ejection mechanism 12 is triggered to send an ignition command to a gas generator, so that an explosion reaction is generated, nitrogen or hydrogen is generated instantaneously, the airbag is rapidly expanded, and the airbag can be instantaneously filled at the outer edge of the vehicle door matched with the vehicle body, so that the technical effect of separating the vehicle door from the vehicle body is achieved.
Further, as shown in fig. 1 and fig. 2, the invention discloses a control device for an automobile door opening by falling into water, which is used for matching with a vehicle handle to open a vehicle door after detecting that the automobile falls into water, and comprises the vehicle door 1 and a vehicle body 2, wherein the vehicle door 1 is matched with the vehicle body 2, the vehicle door 1 at least comprises a vehicle handle 11 and an airbag ejection mechanism 12, the vehicle handle 11 is in communication connection with the airbag ejection mechanism 12, the vehicle handle is arranged at any position of the lower part of a vehicle window, and reference can be made to the specific arrangement of the vehicle handle on the vehicle door in the prior art, and the airbag ejection mechanism 12 is arranged at the outer edge of the vehicle door matched with the vehicle body, as shown in fig. 2.
In other embodiments, the handle 11 may be disposed at the outer edge of the vehicle body where the vehicle door is engaged with the vehicle body, and no matter where the handle is disposed, the handle 11 is electrically connected to the airbag ejection mechanism 12, that is, when an accident person pulls the handle, a control signal is transmitted to the airbag ejection mechanism 12, preferably, in order to prevent unnecessary economic loss due to false triggering, a certain threshold value may be set for the behavior of pulling the handle, for example, when the number of times of receiving the control signal of pulling the handle within a unit time exceeds a certain threshold value, the airbag ejection mechanism 12 starts to operate, or a pressure sensor may be disposed on the handle, and when the pressure of pulling the handle is greater than a certain threshold value, the control signal of pulling the handle is triggered and transmitted to the airbag ejection mechanism 12, and the airbag ejection mechanism 12 further starts to operate, which does not affect the specific embodiment of the present invention, and will not be described in detail herein.
Further, the vehicle doors 1 at least include a main driver door, a assistant driver door, and two side rear-seat doors, in such an embodiment, if the vehicle is 4 seats, the above-mentioned situation can be set, if the vehicle is 6 seats or 8 seats, the linkage of the airbag ejection mechanism 12 and the handle 11 can be set at each vehicle door according to the specific situation, and in such an embodiment, the door opening device set on each vehicle door 1 can be controlled separately or collectively, that is, different airbag ejection mechanisms 12 can be triggered at different vehicle doors to open the vehicle door individually, or all vehicle doors can be opened after any vehicle door triggers the airbag ejection mechanisms 12, which can be specifically set according to the specific situation, in the second case, a waterproof single chip microcomputer can be set to integrally control all vehicle doors, i.e., once one door is activated, all doors are activated.
Those skilled in the art will appreciate that the vehicle body 1 further comprises a sensing device 13, and the sensing device 13 is arranged at the bottom of a door where the door is engaged with the vehicle body. In a preferred embodiment, the sensing means may be a water level sensor, i.e. a trigger condition is initiated when the water level crosses the sensor's maximum water level and is monitored by the water level sensor. The sensing device can also be a pressure sensor, namely after the vehicle falls into water, external water can generate certain water pressure on the vehicle, and when the water pressure exceeds a certain threshold value, the triggering condition is started. The sensing means may also be an acceleration sensor, i.e. the triggering condition is activated when the vehicle falls from a height or sinks at a certain acceleration. The sensing device can also be a GPS, namely, the triggering condition is started under the condition that the position of the vehicle in a river, a lake, a sea, a river and the like is displayed in a third-party map, similarly, the sensing device can also be a gyroscope, a displacement sensor and the like, and the sensing device 13 is a prerequisite condition for starting the linkage of the vehicle handle and the air bag ejection mechanism, namely, the linkage of the air bag ejection mechanism can be triggered only when a certain monitoring condition is met by pulling the vehicle handle in an accident. Further, the sensing device 13 may be configured as any one or more of the above-mentioned sensing devices, which do not affect the specific embodiment of the present invention and are not described herein again.
Further, the vehicle body 2 further comprises an active emergency button for responding and confirming that the vehicle is in a water-falling state, and those skilled in the art understand that since some factors causing safety hazards to accident personnel due to failure, malfunction, etc. of the sensing device 13 need to be eliminated, the present invention also provides a preferred embodiment that the emergency button is actively opened to directly trigger the airbag ejection mechanism 12 when the vehicle handle is pulled to generate linkage corresponding to the airbag ejection mechanism 12, further, in the present invention, the active emergency button is not labeled, because the active emergency button can be arranged on the vehicle door or in the vehicle body as a preferred embodiment of the present invention, and more preferably, to prevent false triggering, the active panic button may also be provided in a more concealed location.
Fig. 3 is a schematic flow chart illustrating a method for controlling a door of an automobile falling into water according to an embodiment of the present invention. The invention discloses a control method for opening an automobile door by falling into water, which adopts the control device to realize the opening of an automobile door by matching with an automobile handle after the automobile falls into water, and comprises the following steps:
firstly, the process proceeds to step S101, and determines whether the vehicle is in a drowning state based on the sensing device, and if so, the process proceeds to step S102, in such an embodiment, the step S101 is a determination step, that is, after determining that the vehicle is in a drowning state is implemented by any one or more of the pressure sensor, the acceleration sensor, the water level sensor, the gyroscope, the GPS, and the displacement sensor in fig. 2, if the vehicle is actually in a drowning state, the process proceeds to step S102, and if the vehicle is not in a drowning state, the monitoring is continuously maintained.
Then, the process proceeds to step S102, and after receiving a control signal from a vehicle handle, the airbag ejection mechanism is triggered to be linked, wherein the airbag ejection mechanism is disposed at an outer edge of the vehicle door where the vehicle door is engaged with the vehicle body.
Finally, step S103 is performed, in which the airbag ejection mechanism is instantaneously expanded to form a thrust force acting on the vehicle body and generate a reaction force for opening the vehicle door, that is, the airbag ejection mechanism is instantaneously expanded to fill the airbag with gas, and referring to the foregoing embodiment, an explosion in mechanics is gradually resolved, that is, the gas forms a thrust force acting on the vehicle body and the vehicle body acts on the vehicle door through the reaction force formed by the expanded airbag.
It is understood by those skilled in the art that in step S102, the control signal of the handle is a door opening signal conducted when the handle is pulled, pressed or rotated, and since the design of the vehicle door in the prior art is different, there may be a plurality of designs for opening the handle, and whatever the design, the door opening mode for the conducted door opening signal will fall into the technical scheme required to be protected by the present invention.
Further, in the step S103, the reaction force for opening the door is at least greater than 150kg, according to the existing information, when the vehicle falls into the water, if the door needs to be opened normally, a force greater than 150kg is required to push the door open, because the pressure generated by the water squeezing the door is at least about 150kg, in the present invention, the airbag ejection mechanism for the door and the vehicle body to generate the elastic force instantaneously can be designed according to the specific situation, and the design requirement can be satisfied only by instantaneously generating the force greater than 150kg, which is related to the shape and size design of the airbag, the amount design of the gas generator, and the like, but as long as the instantaneous elastic force for instantaneously opening the door is satisfied, the external water pressure and the internal gas pressure gradually tend to be balanced along with the large amount of external water, and in the subsequent self-rescue process, the accident personnel can open the door by their own force, at the moment, the technical scheme required to be protected by the invention is that a common accident person cannot instantaneously generate 150kg of force to push the car door open, and the technical scheme of the invention assists in completing the opening of the car door to save self-rescue.
More specifically, in the prior art, buoyancy is generated by an air bag, so that the vehicle falls slowly, and even the vehicle floats on the water surface again, but although the technical effect is not achieved by the invention, in practical application, certain floating gas such as nitrogen and hydrogen is generated, and certain positive effect is also generated on self rescue of the vehicle, but the invention is not the main technical means of the invention.
It should be noted that the specific implementation of each of the above device embodiments is the same as the specific implementation of the corresponding method embodiment, and is not described herein again. In summary, the technical scheme of the invention provides a control device for an automobile door opening when an automobile falls into water, the control device is matched with a handle to open an automobile door after the automobile falls into water is detected, the handle is in communication connection with an air bag ejection mechanism, instant expansion of an air bag is realized through the air bag ejection mechanism, and an accident person can make the automobile door eject through matching of self thrust and auxiliary generated expansion force, so that escape is realized
Various general purpose devices may be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some embodiments, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Furthermore, those of skill in the art will understand that although some embodiments described herein include some features included in other embodiments, not others, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a single chip, microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of an apparatus for providing a service of custom generating charts in accordance with embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. The utility model provides a controlling means that door was opened in car water fall, its detects and cooperates the handlebar hand to realize opening of door after the car falls into water, its characterized in that includes door (1) and automobile body (2), door (1) includes handlebar hand (11) and gasbag ejection mechanism (12) at least, handlebar hand (11) with gasbag ejection mechanism (12) communication connection.
2. The control device of claim 1, wherein the airbag ejection mechanism (12) includes at least an ignition device and a gas generant, the ignition device being communicatively coupled to the handlebar.
3. Control arrangement according to claim 1, characterized in that the vehicle door (1) comprises at least a main driver door, a passenger door, a rear seat side door.
4. A control device according to claim 1, characterized in that the vehicle body (1) further comprises a sensor device (13), said sensor device (13) being arranged at the bottom of a door where the door fits the vehicle body.
5. Control arrangement according to claim 1, characterized in that the sensing means (13) comprise the following:
-a pressure sensor;
-an acceleration sensor;
-a water level sensor;
-a gyroscope;
-a GPS; or
-a displacement sensor.
6. Control device according to claim 1, characterized in that the body (2) further comprises an active panic button for responding to and confirming that the vehicle is drowned.
7. The control device according to claim 1, characterized in that the airbag ejection mechanism (12) is encased inside the vehicle door and sealed with a waterproof element.
8. A control method for opening a door by falling into water of an automobile, which adopts the control device as claimed in any one of claims 1-7 to realize the opening of the automobile door by matching with a handle after the automobile falls into water, and is characterized by comprising the following steps:
a. judging whether the automobile is in a water falling state or not based on the sensing device, if so, executing the step b;
b. triggering the linkage of an air bag ejection mechanism after receiving a control signal from a vehicle handle, wherein the air bag ejection mechanism is arranged on the outer edge of a vehicle door matched with a vehicle body;
c. the air bag ejection mechanism forms thrust after being instantaneously expanded to act on a vehicle body and generate reaction force for opening a vehicle door.
9. The control method according to claim 8, wherein in the step b, the control signal of the handlebar is a door opening signal conducted when the handlebar is pulled, pressed or rotated.
10. The control method according to claim 8, wherein in the step c, the reaction force for opening the vehicle door is at least more than 150 kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010946148.XA CN112158161A (en) | 2020-09-10 | 2020-09-10 | Control device and method for automobile falling-into-water door opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010946148.XA CN112158161A (en) | 2020-09-10 | 2020-09-10 | Control device and method for automobile falling-into-water door opening |
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| CN112158161A true CN112158161A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010946148.XA Pending CN112158161A (en) | 2020-09-10 | 2020-09-10 | Control device and method for automobile falling-into-water door opening |
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| CN (1) | CN112158161A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454969A (en) * | 2022-02-23 | 2022-05-10 | 扬州丰源车身制造有限公司 | Cab assembly capable of automatically alarming in case of accident and processing method thereof |
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| CN114454969A (en) * | 2022-02-23 | 2022-05-10 | 扬州丰源车身制造有限公司 | Cab assembly capable of automatically alarming in case of accident and processing method thereof |
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Application publication date: 20210101 |
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