Automobile back row small table board, control method and storage medium thereof

Abstract

The invention discloses an automobile rear-row small table board which is fixed to the rear row of an automobile seat through connecting rod assemblies symmetrically arranged on the two sides, the rear row of the automobile is provided with a rear-row passenger sensor for sensing whether passengers exist or not, and collision sensors are arranged on a front bumper and a rear bumper of the automobile. The rear-row passenger sensor and the collision sensor are both connected with the vehicle controller and output induction signals to the vehicle controller, a position sensor for obtaining the opening state of the small table plate is arranged on the connecting rod assembly, the position sensor is connected with the vehicle controller and outputs induction signals to the vehicle controller, and an electric release mechanism is arranged on the connecting rod assembly. A small table board safety air bag is arranged on the lower surface of the small table board, and the vehicle controller is connected with the electric release mechanism and the small table board safety air bag and outputs starting signals to the electric release mechanism and the small table board safety air bag. According to the invention, multiple systems on the automobile are linked and are matched with the newly added active protection mechanism for the small table plate at the back row, so that the small table plate can be used more safely and reliably, the injury of the small table plate to passengers at the back row is reduced, and the safety performance of the automobile is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile safety control of combined automobile safety system and small table board control device. BACKGROUND

[0002] With the rapid development of intelligent cockpit, the traditional automobile seat table board can only be manually opened and closed and provides simple storage function, for example, the disclosure document with the patent name of "small table board mechanism shared by front and rear rows of central control box and automobile" and the authorization announcement date of July 26, 2022, the authorization announcement number of CN217048391U, the small table board disclosed in the document includes an armrest box body, further includes a sliding rail mechanism installed on the vehicle body floor, the armrest box body is slidably installed on the sliding rail mechanism, and the armrest box body can slide along the sliding rail mechanism in the length direction of the vehicle body; a small table board mechanism is installed in the armrest box body, the small table board mechanism can be manually or automatically extended and retracted from the armrest box body, and the small table board mechanism has a small table board capable of being switched between a use state and a storage state by flipping or folding.

[0003] When the similar automobile small table board is used in the rear row, once a traffic accident occurs, the expanded small table board greatly occupies the survival space of the passengers in the rear row, and in a larger accident, the passengers may be fatally injured, but there is no similar system to solve the above problems at present, so that the use of the small table board has safety hazards. SUMMARY

[0004] The technical problem to be solved by the present application is to realize an airbag pop-up control strategy based automobile safety system capable of jointly and coordinately controlling the small table board to actively protect.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: an automobile rear row small table board, the small table board is fixed on the rear row of automobile seats through two side symmetrical connecting rod assemblies, a rear row passenger sensor is arranged on the rear row of the automobile, a deceleration sensor is arranged in the automobile, the rear row passenger sensor and the deceleration sensor are connected and output sensing signals to a vehicle controller, a position sensor for acquiring the opening state of the small table board is arranged on the connecting rod assembly, the position sensor is connected and outputs sensing signals to the vehicle controller, and an electric release mechanism is arranged on the connecting rod assembly.

[0006] The two connecting rod assemblies are the same in structure, the connecting rod assembly is provided with an upper branch arm, one end of the upper branch arm is fixed on the seat through an upper rotating shaft, the other end is fixed on the small table board, a slide rail extending downward is arranged on the backrest below the upper rotating shaft, a sliding block is fixed on the slide rail through the electric release mechanism, the sliding block is connected with one end of a lower branch arm through a lower rotating shaft, the other end of the lower branch arm is connected with the lower surface of the small table board through a supporting rotating shaft, and the supporting rotating shaft is embedded in the sliding groove in the lower surface of the small table board.

[0007] The front and rear bumpers of the automobile are provided with collision sensors, the collision sensors are connected to and output sensing signals to the vehicle controller, the signals output by the rear passenger sensor and the deceleration sensor are used as wake-up signals, and the signals output by the collision sensors are used as start signals.

[0008] The upper surface of the small table board is provided with a wireless fast charging module, the upper surface of the small table board is provided with a touch screen, the touch screen is connected to the car system through a wire harness, the touch screen is embedded in the small table board, the touch screen is a touch screen, and at least an entertainment control module and a car control module are arranged in the touch screen, the car control module is used for controlling the air conditioner, atmosphere lamp, sound, seat, sunroof, window, chassis state and navigation of the vehicle, and the entertainment control module is used for watching videos or playing games, the upper surface of the touch screen is slightly lower than the surface of the small table board, and flaps are hingedly connected to the two sides of the touch screen, the flaps are used for covering and shielding the touch screen, the small table board and the flaps are connected through a damping hinge, the flaps are rubber plates with elasticity, and the edges of the flaps are round corner structures.

[0009] The seat back is provided with a groove matched with the small table board, the lower surface of the small table board is covered with soft material of the same color and material as the surface of the seat, and the outer edge of the small table board is provided with a buckle structure matched with the upper eave of the groove on the seat back.

[0010] The lower rotating shaft is provided with a spring blade, the spring blade is fixed on the electric release mechanism through a steel wire rope to make the spring blade in a storage state, after the electric release mechanism is released, the spring blade is popped out in a direction towards the rear side of the vehicle, and the protruding size is only slightly larger than the thickness of the leather, so that the spring blade is stored in the seat back in a normal state and can cut the leather behind the seat when the spring blade is popped out in a collision.

[0011] The spring is arranged below the slide rail, the bottom end of the spring is fixed on the seat, and the top end of the spring is fixed on the lower rotating shaft, when the lower rotating shaft is at the top of the slide rail, the spring is in a stretched state, when the spring is in a force-free state, the lower rotating shaft is located at the middle position of the slide rail, and at this time, the lower rotating shaft supports the small table board to be folded downward by 55-65 degrees.

[0012] A control method based on a small table board at the rear of an automobile: When the rear passenger sensor obtains a rear passenger, and the deceleration value output by the deceleration sensor is greater than or equal to a set threshold value, the control method of the automobile rear electric table board is woken up, the vehicle controller obtains the signals of the automobile collision sensor in real time, and when the collision intensity signal meets the start airbag condition, a small table board safety control program is executed; The small table board safety control program is to judge the opening state of the small table board; If the small table board is opened, the electric release mechanism is started.

[0013] The small table board safety control program comprises the steps of judging whether the rear row of the small table board has passengers, and if the rear row has passengers, starting the electric release mechanism, otherwise not starting. When the vehicle is running, the rear row passenger uses the table board without wearing a safety belt, and a voice safety reminder is executed.

[0014] A storage medium is a computer-readable storage medium for storing software program code, and the software program code is used to execute the control method.

[0015] The present application links multiple systems on the car, cooperates with the newly added rear small table board active protection mechanism, can make the use of the small table board more safe and reliable, reduces the harm of the small table board to the rear passengers, and improves the safety performance of the car. BRIEF DESCRIPTION OF DRAWINGS

[0016] The content expressed in each figure in the specification of the present application and the marks in the figure are briefly described as follows: Figure 1 It is a system block diagram of the small table board of the rear row of the car; Figure 2 It is a small table board structure schematic diagram; Figure 3 It is a connecting rod assembly structure schematic diagram; The marks in the above figures are as follows: 1, small table board; 2, connecting rod assembly; 3, touch screen; 4, upper supporting arm; 5, upper rotating shaft; 6, lower supporting arm; 7, lower rotating shaft; 8, electric release mechanism. DETAILED DESCRIPTION

[0017] The specific embodiments of the present application will be further described in detail below by comparing the figures and through the description of the embodiments, the shape, structure, mutual position and connection relationship between the parts, the action and working principle of each part, manufacturing process and operation and use method, etc. of each component involved in the specific embodiments of the present application are described in further detail, to help the technical personnel in the field to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present application.

[0018] The small table board of the rear row of the car is a system integrated with the rear row screen of the car, integrates the rear row screen to the small table board 1, constitutes a whole product, is convenient for later replacement and maintenance, is convenient for overall production, is selected and matched, makes the small table board 1 not only have the rear row expansion function, but also integrates the rear operation function, and each seat is equipped with an independent rear row screen, can meet the operation demand, and can meet the independent interaction and entertainment demand, the screen is embedded on the small table board 1, and the user looks down when using, constitutes a new use mode, and is especially suitable for being used as a game screen.

[0019] The overall structure of the small table plate 1 is similar to that of a conventional small table plate 1. The two sides of the small table plate 1 are fixed to the seat back through a connecting rod assembly 2. The seat back has a corresponding groove matching the shape and depth of the small table plate 1, that is, when the small table plate 1 is flipped up, it can be embedded in the groove. The lower surface (when flat) of the small table plate 1 adopts the same color and material as the seat material. In this way, when not in use, the entire back surface (lower surface when flat) of the small table plate 1 is integrated with the seat, improving the aesthetics of the interior. The entire back surface (lower surface when flat) of the small table plate 1 is made of soft material, which makes the small table plate 1 feel better to the touch. At the same time, if a collision occurs, it can also reduce the damage to the passengers behind the front row of seats. The outer edge of the small table plate 1 (outer edge when flat, upper eaves in storage state) is provided with a buckle structure that cooperates with the upper eaves of the seat back groove. When the small table plate 1 is closed, it is fixed by the buckle structure. The buckle structure can use the existing conventional small table plate 1 fixing buckle.

[0020] The upper surface of the small table plate 1 is provided with a touch screen 3 and a wireless fast charging module. The power of the wireless fast charging module can be selected as 50W, which can meet the charging needs of wireless charging devices. The touch screen 3 and the wireless fast charging module can be arranged side by side. The touch screen 3 is connected to the car system through a wire harness. By integrating the rear screen into the small table plate, the use function of the small table plate can be enriched without occupying space. The overhead operation method can complete basic vehicle function operations such as air conditioning, sunroof, windows, and seat functions. It can also use the screen for entertainment such as game operation. The overhead operation is more convenient for rear entertainment, and each rear seat is equipped with one, which can greatly enrich the entertainment function of the rear seats and develop more entertainment games (such as multiplayer online games).

[0021] The touch screen 3 is embedded in the small table plate 1, as shown in Figure 2 The size of the screen can be designed as needed, Figure 2The touch screen 3 can be understood as a tablet computer embedded in the small table board 1. When the small table board 1 is stored, the touch screen 3 is also stored. When the small table board 1 is unfolded, the touch screen 3 can be used or closed. In use, considering that some use environments may cause damage to the surface glass of the touch screen 3, the upper surface of the touch screen 3 can be designed to be slightly lower than the surface of the small table board 1. The recessed part is provided with a baffle. The thickness of the baffle is just enough to fill the recessed part, so that when the baffle is covered, the upper surface of the entire small table board 1 is flush. The baffle is hinged on both sides of the touch screen 3 and is used to cover and shield the touch screen 3. The two covers cooperate to protect the touch screen 3. The preferred solution is that the small table board 1 and the baffle are connected by a damping hinge, and the damping force is as large as possible. In this way, the baffle not only can cover the touch screen 3 to protect it, but also can be completely opened to use the screen. Even the baffle can be used to stand up to limit the placement of articles. For example, when eating instant noodles, the baffle can be used to clamp the instant noodle box to prevent the box from shaking left and right. The baffle is a rubber plate with a flexible edge with a rounded structure. In case of accidents, the baffle can avoid causing damage to the user.

[0022] The touch screen 3 is a touch screen that can be operated by touch. It can also be connected to other peripheral devices and used as a game console, such as a Bluetooth handle. The touch screen 3 is provided with at least an entertainment control module and a car control module. The car control module is used to control the air conditioner, atmosphere lamp, sound, seat, sunroof, window, chassis state, and navigation of the vehicle. The user can operate some auxiliary functions of the vehicle in the back row according to needs, or even help the driver complete some vehicle operations, such as air conditioner and sunroof operations. Even if the front passenger does not have a passenger, the rear passengers can also operate the vehicle with the driver to improve the safety of driving. The entertainment control module is used to watch videos or play games. It can load the required software, such as TikTok software, Taobao software, and game software, to increase the entertainment of the vehicle. Compared with the conventional design of the front large screen, the present application uses multiple screen linkage, and even can play games using internal network, enriches the car system, improves the driving experience, and makes the journey more relaxed. The user can also use the vehicle as an entertainment base.

[0023] When the small table board 1 is unfolded, it may cause great safety hazards to the user in the event of a car accident. However, there is no good way to deal with it at present. The present application enriches this part. A position sensor is arranged on the connecting rod assembly 2 to obtain the opening state of the small table board 1. The position sensor is connected to and outputs a sensing signal to the vehicle controller. The opening state of the small table board 1 can be transmitted to the vehicle controller in real time. Different programs can be controlled according to whether the small table board 1 is unfolded to ensure driving safety.

[0024] Firstly, a safety airbag is embedded in the inner wall of the lower surface of the small table 1, so that rear passengers have the same protection as front passengers. When the small table 1 is in the stowed state, it will be deployed together with other airbags in the event of a car accident to protect the safety of the driver and passengers.

[0025] Secondly, when the small table 1 is unfolded, it needs to be able to quickly straighten. This requires an improvement to the connecting rod assembly 2. The structure of the connecting rod assembly 2 supporting the small table 1 is still conventional, that is, it uses two connecting rods to ensure that the small table 1 can be supported and kept horizontal in a horizontal state, and can be folded upwards and stored in the groove on the back of the seat. The connecting rod assemblies 2 on both sides of the small table 1 have the same structure and are symmetrically arranged. Therefore, only the connecting rod assembly 2 on one side will be described here. Figure 2 , 3 As shown, the main support structure consists of two identical linkage assemblies 2, including an upper support arm 4, an upper pivot 5, a lower support arm 6, and a lower pivot 7. The length of the upper support arm 4 is greater than that of the lower support arm 6. One end of the upper support arm 4 is fixed to the seat via the upper pivot 5, and the other end is fixed to the small table 1, typically positioned in the middle of the upper surface of the small table 1. The lower pivot 7 is fixed to the seat back below the upper pivot 5. One end of the lower support arm 6 is fixed to the lower pivot 7, and the other end is fixed to the support pivot. The support pivot is embedded in a groove on the lower surface of the small table 1, which is set along the longitudinal direction of the vehicle. The support pivot can slide within the groove. By controlling the sliding stroke (length) of the groove, the support pivot, upper pivot 5, and lower pivot 7 can be coordinated to achieve a fixed shape, supporting the small table 1 in a horizontal use state and a vertical storage state. All the axes of the support pivot, upper pivot 5, and lower pivot 7 are in the same direction, horizontally aligned with the vehicle body.

[0026] To allow the small table 1 to fold down quickly when unfolded, preventing injury to passengers, a downward-extending slide rail is provided on the seat back below the two upper pivots 5. A slider is fixed above the slide rail via an electric release mechanism 8, and the lower pivot 7 is mounted on the slider. The lower pivot 7 can slide up and down along the slide rail via the slider. In the normal state, the electric release mechanism 8 fixes the slider at the top of the slide rail. The electric release mechanism 8 is vertically fixed, with the control direction downward. Its main structure is columnar, with a lock head at one end and a lock body at the other. A height motor is installed inside the lock head, and the output shaft of the motor is connected to the lock rod. The lock rod is locked in the lock body, which contains a vertically oriented energy storage device. The spring, when the lock head is locked onto the lock body, has a cylindrical structure with internal spring energy storage. When the lock head is unlocked, the lock bar is released from the lock body, and the spring releases its stored energy to quickly separate the lock head and lock body, achieving a separation method similar to "explosion". The direction of "explosion" is the direction of spring energy storage. The "explosion" can provide a downward burst force to the slider. When the small table 1 is unfolded, the sudden downward movement of the lower pivot 7 will fold the small table 1 downward. It only needs to be folded downward by more than 30 degrees from the horizontal state to prevent rear passengers from leaning forward. It will also fold downward under the force of the rear passengers pressing forward, and will hardly affect the passengers.

[0027] Because the lower support plate may be unable to move down due to the influence of the seat back leather during the downward movement process, it is necessary to quickly cut open the leather to create space for the lower support arm 6 to move down. Therefore, a spring blade is installed on the lower pivot 7. The spring blade is fixed to the electric release mechanism 8 by a steel wire rope so that the spring blade is in a retracted state. When the electric release mechanism 8 is released, the spring blade pops out in the rearward direction, and the protruding size is only slightly larger than the thickness of the leather. In this way, the spring blade is normally retracted inside the seat back. When it pops out during a collision, it can only cut open the leather behind the seat, providing space for the lower pivot 7 to move down. This ensures both aesthetics and the reliability of the system in the event of a sudden collision.

[0028] To further enhance the reliability of the system, a spring is installed below the slide rail. The bottom end of the spring is fixed to the seat, and the top end is fixed to the lower pivot 7. When the lower pivot 7 is at the top of the slide rail, the spring is in a stretched state. When the spring is not under stress, the lower pivot 7 is located in the middle of the slide rail, at which point the small table 1 is folded down approximately 60 degrees. As an energy storage mechanism, the spring can quickly pull down the lower pivot 7 after the electric release mechanism 8 is activated, replenishing the kinetic energy provided by the electric release mechanism 8 and enabling a faster response to safety measures. Simultaneously, when pulled down to its final position, the lower pivot 7 is in the middle of the slide rail, and the small table 1 is folded down approximately 60 degrees. If a rear passenger's leg presses against the small table 1, the spring will provide a supporting force, causing the spring to compress downwards. This downward force of the spring can dissipate the impact force on the rear passenger's leg, further enhancing the protection of the rear passenger—a double benefit.

[0029] Based on the above control method of the electric rear seat table of the car, the vehicle controller obtains the car collision sensor signal in real time. When the conditions for airbag activation are met, the controller determines the opening status of the small table 1. At the same time, the presence or absence of passengers in the rear seat can also be taken as a necessary condition. If the tray table 1 is already open and there are passengers in the back row, then the electric release mechanism 8 is activated; If tray table 1 is not in use and there are passengers in the back, the tray table 1 airbag on the back of tray table 1 will be activated.

[0030] If there are no passengers in the back row, no action will be taken regardless of whether the tray table 1 is open or not.

[0031] The aforementioned control program can be integrated into the storage medium of the vehicle controller. The storage medium is a computer-readable storage medium used to store software program code, which is used to execute the aforementioned control method.

[0032] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A rear seat tray table for automobiles, wherein the tray table is fixed to the rear of the car seat via symmetrically arranged connecting rod assemblies on both sides, a rear passenger sensor is provided in the rear of the car, and a deceleration sensor is provided inside the car, wherein both the rear passenger sensor and the deceleration sensor are connected to and output sensing signals to a vehicle controller, characterized in that: The two linkage assemblies have the same structure. Each linkage assembly is provided with an upper support arm. One end of the upper support arm is fixed to the seat via an upper pivot, and the other end is fixed to the small table. A downward-extending slide rail is provided on the backrest below the upper pivot. A slider is fixed above the slide rail via an electric release mechanism. The slider is connected to one end of the lower support arm via a lower pivot. The other end of the lower support arm is connected to the lower surface of the small table via a support pivot. The support pivot is embedded in a groove on the lower surface of the small table.

2. The rear seat tray table for automobiles according to claim 1, characterized in that: The linkage assembly is equipped with a position sensor for obtaining the open state of the small table. The position sensor is connected to and outputs a sensing signal to the vehicle controller. The linkage assembly is also equipped with an electric release mechanism.

3. The rear seat tray table for automobiles according to claim 2, characterized in that: The vehicle is equipped with collision sensors on the front and rear bumpers. The collision sensors are all connected to and output sensing signals to the vehicle controller. The signals output by the rear passenger sensor and the deceleration sensor are used as wake-up signals, and the signals output by the collision sensors are used as start signals.

4. The rear seat tray table for automobiles according to claim 3, characterized in that: The upper surface of the small table is equipped with a wireless fast charging module and a touch screen. The touch screen is connected to the vehicle's infotainment system via a wiring harness and is embedded within the small table. The touch screen contains at least an entertainment control module and a vehicle control module. The vehicle control module controls the vehicle's air conditioning, ambient lighting, audio system, seats, sunroof, windows, chassis status, and navigation. The entertainment control module is used for watching videos or playing games. The upper surface of the touch screen is slightly lower than the surface of the small table. Baffles are hinged to both sides of the touch screen to cover and shield it. The small table and the baffles are connected by damping hinges. The baffles are made of elastic rubber and have rounded edges.

5. The rear seat tray table for automobiles according to claim 4, characterized in that: The back of the seat has a groove that matches the small table. The lower surface of the small table is covered with a soft material of the same color and material as the seat surface. The outer edge of the small table has a buckle structure that matches the upper edge of the groove on the back of the seat.

6. The rear seat tray table for automobiles according to any one of claims 2-5, characterized in that: A spring blade is provided on the lower pivot. The spring blade is fixed to the electric release mechanism by a steel wire rope so that the spring blade is in a retracted state. When the electric release mechanism is released, the spring blade pops out towards the rear of the vehicle. The protruding size is only slightly larger than the thickness of the leather, so that the spring blade is normally retracted into the seat back. When it pops out during a collision, it can cut through the leather behind the seat.

7. The rear seat tray table for automobiles according to claim 6, characterized in that: A spring is installed below the slide rail. The bottom end of the spring is fixed to the seat, and the top end is fixed to the lower pivot. When the lower pivot is at the top of the slide rail, the spring is in a stretched state. When the spring is not under force, the lower pivot is located in the middle of the slide rail. At this time, the lower pivot supports the small table to fold downwards at 55-65 degrees.

8. A control method based on the rear seat tray table of a car as described in claim 6 or 7, characterized in that: When the rear passenger sensor detects the presence of a rear passenger and the deceleration sensor outputs a deceleration value greater than or equal to a set threshold, the control method for the rear electric table is activated. The vehicle controller acquires the vehicle collision sensor signal in real time. When the collision intensity signal meets the conditions for airbag activation, the table safety control program is executed. The safety control program for the small table is used to determine the open status of the small table. If it is already open, the electric release mechanism will be activated.

9. The control method according to claim 8, characterized in that: The safety control program for the small table includes a step of determining whether there are passengers behind the small table. If there are passengers behind the table, the electric release mechanism is activated; otherwise, it is not activated. If rear passengers use the tray table without wearing seat belts while the vehicle is in motion, a voice safety reminder will be issued.

10. A storage medium, said storage medium being a computer-readable storage medium for storing software program code, characterized in that: The software program code is used to execute the control method as described in claim 8 or 9.

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