Adjustment method and control device of small table board of car seat backrest and car

Abstract

The present invention discloses an adjustment method for a small table on a car seat back, a control device, and a car, and relates to the field of automobile design technology. The adjustment method for the small table on a car seat back comprises: obtaining first coordinate information of an occupant's heel point, second coordinate information of the occupant's H point, and third coordinate information of the center point of an opened small table; calculating actual position information of the center point of the small table relative to the occupant's H point based on the third coordinate information of the center point of the small table and the second coordinate information of the occupant's H point, and determining target position information of the center point of the small table relative to the occupant's H point based on a preset correlation between the first coordinate information and the second coordinate information; and determining an adjustment scheme for the small table based on the actual position information and the target position information. Using the above method, after rear passengers are seated, the small table can be controlled to perform adaptive adjustment based on the occupant's position, so that the small table reaches a more optimal position, thereby improving the rear passenger's riding experience.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile design, and in particular to an adjustment method for a small table board on a car seat back, a control device and a car. Background Art

[0002] With the development of smart cars, compared to traditional cars, which are primarily used for driving and riding, smart cars now take on multiple functions, including social interaction, entertainment, and office work. This has led to higher demands for comfort and convenience for rear-seat passengers. To meet the needs of rear-seat passengers, many current models have added flip-up tables behind the front seatbacks. These tables can be used to watch movies on tablets, work on laptops, do homework, or even serve as a dining table. However, most of these tables can only be lowered or folded up, and the position of the tables is fixed. Therefore, rear-seat passengers may bump into or be unable to reach the tables, causing inconvenience. Summary of the Invention

[0003] The main purpose of the present invention is to propose a method for adjusting a small table on the back of a car seat, a control device and a car, aiming to propose a method for adaptively adjusting the position of the small table on the back of the front seat according to the position of the rear passengers, so as to improve the comfort and convenience of the rear passengers.

[0004] To achieve the above object, the present invention provides a method for adjusting a small table on a car seat backrest, the method comprising the following steps:

[0005] When a passenger is seated in the rear seat of the vehicle and the small table behind the front seatback is open, obtaining first coordinate information of the passenger's heel point, second coordinate information of the passenger's H point, and third coordinate information of the center point of the open small table;

[0006] Based on the third coordinate information of the center point of the tray table and the second coordinate information of the occupant's H point, the actual position information of the center point of the tray table relative to the occupant's H point is calculated, and at the same time, the target position information of the center point of the tray table relative to the occupant's H point is determined according to the preset correlation relationship between the first coordinate information and the second coordinate information;

[0007] An adjustment plan for the small table top is determined based on the actual position information and the target position information.

[0008] In one embodiment, the target position information includes a target distance difference in a height direction and a target distance difference in a horizontal direction, and the actual position information includes an actual distance difference in a height direction and an actual distance difference in a horizontal direction.

[0009] In one embodiment, in the step of "calculating the actual position information of the center point of the tray table relative to the occupant's H point based on the third coordinate information of the center point of the tray table and the second coordinate information of the occupant's H point, and determining the target position information of the center point of the tray table relative to the occupant's H point based on the correlation between the first coordinate information and the second coordinate information":

[0010] determining, based on the first coordinate information and the second coordinate information, a height difference between a heel point of the occupant and an H point of the occupant as a first height difference;

[0011] Based on a preset association between the first height difference and the target position information, a target distance difference in the height direction and a target distance difference in the horizontal direction of the center point of the small table relative to the occupant's H point are determined.

[0012] In one embodiment, the preset association relationship between the first height difference and the target position information includes:

[0013] L1=a1*H0 2 +b1*H0+c1

[0014] H1=a2*H0 2 +b2*H0+c2

[0015] Among them, H0 is the first height difference, H1 is the target distance difference in the height direction, L1 is the target distance difference in the horizontal direction, and a1, b1, c1, a2, b2, and c2 are all coefficients.

[0016] In one embodiment, the step of “determining an adjustment plan for the shelf based on the actual position information and the target position information” includes:

[0017] In the actual position information and the target position information, when the distance difference in the height direction and the distance difference in the horizontal direction are the same, the small table is controlled to maintain the current position.

[0018] In one embodiment, the step of “determining an adjustment plan for the shelf based on the actual position information and the target position information” includes:

[0019] When at least one of a height difference and a horizontal distance difference between the actual position information and the target position information is different, the small table is controlled to adjust its position.

[0020] In one embodiment, the step of “controlling the small table to adjust the position when at least one of a height difference and a horizontal distance difference between the actual position information and the target position information is different” includes:

[0021] When the actual distance difference in the height direction is greater than or less than the target distance difference in the height direction, the small table is adjusted to move downward or upward.

[0022] In one embodiment, the step of “controlling the small table to adjust the position when at least one of a height difference and a horizontal distance difference between the actual position information and the target position information is different” includes:

[0023] When the actual distance difference in the horizontal direction is greater than or less than the target distance difference in the horizontal direction, the small table is adjusted to move horizontally toward the occupant or away from the occupant.

[0024] The present invention also proposes a control device, which includes: a memory, a processor, and a car seat back table adjustment program stored in the memory and runnable on the processor, wherein the car seat back table adjustment program is configured to implement the steps of the car seat back table adjustment method as described above.

[0025] The present invention also provides a car, comprising:

[0026] The data acquisition device includes a floor mat sensor, a seat sensor, and a small table sensor, which are respectively used to obtain first coordinate information of the occupant's heel point, second coordinate information of the occupant's H point, and third coordinate information of the center point of the opened small table;

[0027] A front seat assembly including a seat back and a small table, wherein the small table is mounted on the seat back via an adjustment mechanism so as to be movable in horizontal and vertical directions and to be able to swing in the vertical direction; and

[0028] The control device as described above is electrically connected to the data acquisition device and the adjustment mechanism to control the operation of the adjustment mechanism according to the detection results of the data acquisition device.

[0029] In the technical solution of the present invention, the target position information of the center point of the small table relative to the passenger's point H is preset through the first coordinate information and the second coordinate information, and the target position information is self-adjusted under different passenger positions, so that when the passenger opens the small table on the front seat back and sits in different positions of the rear seat, the passenger can set appropriate target position information and adjust the actual position of the small table accordingly, thereby realizing intelligent adjustment of the small table on the front seat and improving the comfort and convenience of the rear passengers in using the small table. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0031] Figure 1 A schematic diagram of a partial structure of an embodiment of a vehicle provided in this application;

[0032] Figure 2 for Figure 1 Schematic diagram of the coordinate system of the car;

[0033] Figure 3 for Figure 1 Schematic diagram of the relationship between the small table on the back of the front seat and the rear passengers in the car;

[0034] Figure 4 A flow chart of an embodiment of a method for adjusting a small table on a car seat back provided in this application;

[0035] Figure 5 for Figure 4 A flowchart of a method for adjusting a small table on a car seat back;

[0036] Figure 6 This is a schematic diagram of the device structure of the hardware operating environment involved in the method for adjusting the small table on the back of a car seat in the embodiment of the present application.

[0037] Description of Figure Numbers:

[0038] 11. Control device; 12. Seat back; 13. Tray table; 14. Height adjustment mechanism; 15. Level adjustment mechanism; 16. Highest position; 17. Lowest position; 18. Position closest to rear passengers; 19. Position farthest from rear passengers; 21. Vehicle support;

[0039] a. Y datum plane; b. X datum plane; c. Z datum plane; d. Occupant's heel point; e. Occupant's H point; f. Center point of the small table.

[0040] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0042] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0043] With the development of smart cars, compared with traditional cars which are mainly used for driving and riding, smart cars now have multiple attributes such as social interaction, entertainment, and office work, and have gradually become the "third living space" in addition to living and working spaces.

[0044] Rear-seat passengers also have higher demands for comfort and convenience. Many current models incorporate flip-up tables behind the front seatbacks to meet these needs. These tables can be used for tablets for watching movies, laptops for work, exercise books for homework, or even as a dining table for food. However, most systems can only be lowered and retracted, with a fixed position. This creates the risk of rear-seat passengers bumping into or being unable to reach the tables, causing inconvenience.

[0045] Based on this, the present invention proposes a car, see Figure 1 The automobile includes a data acquisition device, a front seat assembly, and a control device 11. The data acquisition device includes a floor mat sensor, a seat sensor, and a small table sensor, which are respectively used to obtain first coordinate information of the occupant's heel point, second coordinate information of the occupant's H point, and third coordinate information of the center point of the opened small table. The front seat assembly includes a seat back 12 and a small table 13, which is mounted to the seat back 12 via an adjustment mechanism so as to be movable horizontally, vertically, and oscillating vertically. The control device 11 is electrically connected to the data acquisition device and the adjustment mechanism to control the operation of the adjustment mechanism based on the detection results of the data acquisition device.

[0046] Among them, after the rear passengers are seated, the small table 13 is rotated from the state of being in contact with the seat back 12 to the horizontal state. It should be noted that the horizontal state does not mean absolute horizontal. In some cases, the horizontal state also means that it will be tilted at some angle relative to the absolute horizontal to facilitate the use of the rear passengers. That is, when the small table 13 is opened to a suitable use angle, the floor mat sensor can obtain the position of the passenger's heel point and obtain the first coordinate information; the seat sensor can obtain the position of the passenger's H point and obtain the second coordinate information; the small table sensor can obtain the position of the center point of the small table 13 and obtain the third coordinate information; the data acquisition device sends the collected information to the control device 11, and the control device 11 receives the information sent by the data acquisition device, and after processing, controls the adjustment mechanism to adjust the position of the small table 13. The adjustment mechanism includes a height adjustment mechanism 14 and a horizontal adjustment mechanism 15 to adjust the position of the small table 13 to a position more suitable for the current passenger. The height adjustment mechanism 14 can adjust the small table 13 between a highest position 16 and a lowest position 17 , and the horizontal adjustment mechanism 15 can adjust the small table 13 between a position 18 closest to the rear passengers and a position 19 farthest from the rear passengers.

[0047] In order to process the position information more conveniently, a vehicle coordinate system can be established. Figure 2 , Figure 2 Schematic diagram of a vehicle coordinate system in an embodiment of the present application. The vehicle is placed on a vehicle support 21.

[0048] Among them, the origin is the midpoint of the line connecting the left and right wheel centers of the front wheels;

[0049] Y reference plane a: longitudinal symmetry plane of the vehicle;

[0050] X reference plane b: a vertical plane passing through the origin and perpendicular to the Y reference plane a;

[0051] Z reference plane c: a horizontal plane passing through the origin and perpendicular to the Y reference plane a and the X reference plane b;

[0052] X-axis: With the origin as the reference point, the direction pointing to the front of the car is negative (-X), and the direction pointing to the rear of the car is positive (+X);

[0053] Y-axis: With the origin as the reference point, pointing to the left side of the car is negative (-Y), and pointing to the right side of the car is positive (+Y);

[0054] Z axis: With the origin as the reference point, the direction pointing downwards is negative (-Z), and the direction pointing upwards is positive (+Z).

[0055] Based on the above coordinate system, the first coordinate information, the second coordinate information and the third coordinate information may be three different point coordinates respectively.

[0056] The present invention also proposes a method for adjusting a small table board on a car seat backrest, referring to Figure 4 , Figure 4 This is a flow chart of an embodiment of a method for adjusting a small table on a car seat backrest according to the present application.

[0057] In this embodiment, the method for adjusting the small table on the backrest of a car seat includes steps S10 to S30:

[0058] Step S10, when a passenger is seated on the rear seat of the vehicle and the small table behind the front seat is opened, obtaining first coordinate information of the passenger's heel point, second coordinate information of the passenger's H point, and third coordinate information of the center point of the opened small table;

[0059] It should be noted that the present application is not limited to obtaining the above coordinate information when the position of the rear seat passenger changes and the small table behind the front seat back is opened. It can also be when the small table is opened and the passenger position changes, obtaining the first coordinate information of the passenger's heel point, the second coordinate information of the passenger's H point and the third coordinate information of the center point of the opened small table. That is, when the passenger adjusts his position midway after sitting down, the position of the small table can also be adaptively adjusted.

[0060] Please note that Figure 3 , Figure 3 The diagram below shows the relationship between the front seatback tray table and the rear passenger. The passenger's heel point d is the actual point of contact between the passenger's heel and the carpet surface; the passenger's H point e is the connection point between the passenger's torso and thigh, also known as the hip point; and the tray table's center point f can be set as needed. For example, if the tray table is uniform and the storage surface is centrally symmetrical, the tray table's center point can be its symmetry center. If the tray table is non-uniform or the storage surface is irregularly shaped, the tray table's center of gravity can be used as the tray table's center point. Of course, other methods for determining the tray table's center point are also possible, and the present invention is not limited thereto.

[0061] Step S20, calculating the actual position information of the center point of the tray table relative to the occupant's H point based on the third coordinate information of the center point of the tray table and the second coordinate information of the occupant's H point, and determining the target position information of the center point of the tray table relative to the occupant's H point based on a preset correlation between the first coordinate information and the second coordinate information;

[0062] It should be noted that when the passenger's position changes, the first and second coordinate information will also change accordingly. Therefore, the target position information of the center point of the tray table relative to the passenger's H point will also change. Since the second coordinate information changes, the actual position information of the center point of the tray table relative to the passenger's H point will also change. This enables intelligent adjustment of the tray table's position, ensuring that the tray table is conveniently used by rear passengers for a long time.

[0063] Step S30: determining an adjustment plan for the small table according to the actual position information and the target position information.

[0064] It should be noted that after confirming the actual position information and the target position information, the small table is controlled to move from the actual position to the target position.

[0065] In the adjustment method of the small table on the back of a car seat provided by the present invention, the target position information of the center point of the small table relative to the occupant's H point is preset through the first coordinate information and the second coordinate information, and the target position information is self-adjusted under different occupant positions, so that when the occupant opens the small table on the back of the front seat and sits in different positions of the rear seat, the occupant can set appropriate target position information and adjust the actual position of the small table accordingly, thereby realizing intelligent adjustment of the small table on the front seat and improving the comfort and convenience of the rear occupants in using the small table.

[0066] Furthermore, the position information in the actual position information and the target position information includes the distance difference in the height direction and the distance difference in the horizontal direction. That is, the target position information includes the target distance difference in the height direction and the target distance difference in the horizontal direction, and the actual position information includes the actual distance difference in the height direction and the actual distance difference in the horizontal direction. Specifically, the distance difference in the height direction is the height distance (the distance in the Z-axis direction) between the center point of the small table and the passenger's H point, and the distance difference in the horizontal direction is the horizontal distance between the center point of the small table and the passenger's H point. Preferably, the distance difference in the horizontal direction is the distance between the center point of the small table and the passenger's H point in the X-axis direction. Adjusting the position of the small table in both the height direction and the horizontal direction, and adjusting from the actual position to the target position, can enable the small table to reach the position that best suits the currently seated passenger.

[0067] Furthermore, in step S20:

[0068] determining, based on the first coordinate information and the second coordinate information, a height difference between a heel point of the occupant and an H point of the occupant as a first height difference;

[0069] Based on a preset association between the first height difference and the target position information, a target distance difference in the height direction and a target distance difference in the horizontal direction of the center point of the small table relative to the occupant's H point are determined.

[0070] In this embodiment, the first height difference is used as a variable to determine the target height and horizontal distance differences between the center of the tray table and the occupant's H-point. The H-point serves as the reference for the occupant's sitting posture, and the height difference between the occupant's heel and the H-point serves as the target position information-associated variable. This better reflects the occupant's actual needs and enhances comfort.

[0071] Furthermore, the preset association relationship between the first height difference and the target position information includes a preset association relationship between the target distance difference in the height direction and the first height difference and an association relationship between the target distance difference in the horizontal direction and the first height difference. The association relationship can be obtained by the following method:

[0072] The height difference H' and horizontal distance difference L' between the center of the tray table and the rear passenger's H-point, as well as the height difference H0 between the passenger's heel point and the passenger's H-point, were collected for various vehicle models. Statistical methods were used to conduct regression analysis on the relative relationships between H' and H0, and L' and H0, to derive the relationship formula.

[0073] Set a series of H0, apply the above formula, calculate the corresponding H' and L' respectively, adjust the corresponding human posture, and use simulation software to perform human comfort simulation analysis;

[0074] Create a human-machine test bench, adjust the rear seats to the set H0, and then adjust the small table to the corresponding position based on the H' and L' calculated by the formula. Then organize different people to conduct actual vehicle evaluations. Repeat the above steps to collect evaluation information from different groups of people;

[0075] Combining simulation analysis and actual vehicle evaluation, the relationship formulas between H' and H0, and L' and H0 are modified to obtain the final relationship formula:

[0076] L'=a1*H0 2 +b1*H0+c1

[0077] H'=a2*H0 2 +b2*H0+c2

[0078] The above relationship formula is used to determine the preset correlation relationship between the first height difference and the target position information, and the relationship between the target distance difference H1 in the height direction and the first height difference H0 is obtained as follows:

[0079] H1=a2*H0 2 +b2*H0+c2

[0080] The relationship between the horizontal target distance difference L1 and the first height difference H0 is obtained as follows:

[0081] L1=a1*H0 2 +b1*H0+c1

[0082] It should be noted that a1, b1, c1, a2, b2, and c2 are coefficients of the relationship formula obtained through the above-mentioned regression analysis, simulation analysis, and actual vehicle evaluation. For example, in one embodiment, a1 is 0.0028, b1 is -1.5528, c1 is 551, a2 is -0.0009, b2 is 0.2451, and c2 is 340.

[0083] The preset correlation between the above-mentioned first height difference and the target position information is used to determine the target distance difference in the height direction and the target distance difference in the horizontal direction of the center point of the small table relative to the passenger's H point, which can further improve the comfort of the rear passengers in using the small table.

[0084] Further, see Figure 5 , step S30 includes: when the distance difference in the height direction and the distance difference in the horizontal direction are the same in the actual position information and the target position information, controlling the small table to maintain the current position. That is, when the current position of the small table coincides with the preset position, the small table itself is in the optimal position, so the small table is controlled to maintain the current position. It should be noted that when the distance difference in the height direction and the distance difference in the horizontal direction are the same, it is not limited to being exactly the same. It can also be that the distance difference in the height direction in the actual position information and the distance difference in the height direction in the target position information are within a set smaller range, and the distance difference in the horizontal direction in the actual position information and the distance difference in the horizontal direction in the target position information are also within a set smaller range, then the small table is controlled to maintain the current position.

[0085] Furthermore, step S30 further includes the following steps:

[0086] When at least one of the height difference and the horizontal distance difference between the actual position information and the target position information is different, the small table is controlled to adjust its position. It should be noted that when at least one of the height difference and the horizontal distance difference between the actual position information and the target position information is different, it means that the height difference in the actual position information is different from the height difference in the target position information and / or the horizontal distance difference in the actual position information is different from the horizontal distance difference in the target position information.

[0087] It should be noted that the step of determining whether the horizontal distance difference in the actual position information is the same as the horizontal distance difference in the target position information, and the step of determining whether the height distance difference in the actual position information is the same as the height distance difference in the target position information, can be performed simultaneously or one after another.

[0088] Furthermore, when the actual height difference is greater than or less than the target height difference, the tray table is adjusted downward or upward. Specifically, when the actual height difference is greater than the target height difference, the tray table is adjusted downward; and when the actual height difference is less than the target height difference, the tray table is adjusted upward to achieve the optimal position.

[0089] Furthermore, when the actual horizontal distance difference is greater than or less than the target horizontal distance difference, the tray table is adjusted to move horizontally toward or away from the occupant. Specifically, when the actual horizontal distance difference is greater than the target horizontal distance difference, the tray table is adjusted to move horizontally toward the occupant; and when the actual horizontal distance difference is less than the target horizontal distance difference, the tray table is adjusted to move horizontally away from the occupant to achieve the optimal position.

[0090] It should be noted that the target distance difference in the height direction may be a range, and the target distance difference in the horizontal direction may also be a range, and the present invention does not impose any limitation on this.

[0091] The present invention combines competitive product benchmarking, regression analysis, simulation analysis, and actual vehicle evaluation to derive the optimal formula for the relative relationship between the center point of the small table on the front seat back and the H point of the rear passenger. After the rear passengers are seated, the small table is controlled to perform adaptive adjustments front and back (horizontally) and up and down (height) according to the passenger position to achieve the optimal position. When the position of the rear passengers changes, the small table can also be controlled to perform adaptive adjustments based on the passenger position information. At the same time, users can choose to turn off the adaptive adjustment of the small table or turn on manual adjustment to meet the personalized needs of different users. The car's intelligence and sense of technology are enhanced, and the rear passengers can also get a better riding experience.

[0092] In addition, the control device provided in the present application includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the adjustment method of the small table on the car seat back in the above embodiment.

[0093] Reference below Figure 6 , which shows a schematic diagram of the structure of a control device suitable for implementing the embodiments of the present application. The control device in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (such as in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 6 The control device shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0094] like Figure 6As shown, the control device may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. RAM 1004 also stores various programs and data required for the operation of the control device. Processing device 1001, ROM 1002, and RAM 1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, a touch screen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage device 1003 including, for example, a magnetic tape, hard disk, etc.; and communication device 1009. The communication device 1009 can allow the control device to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a control device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or have instead.

[0095] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0096] The control device provided in this application utilizes the vehicle seat back tray table adjustment method described in the aforementioned embodiment. Compared to the prior art, the control device provided in this application achieves the same beneficial effects as the vehicle seat back tray table adjustment method described in the aforementioned embodiment. Other technical features of the control device are the same as those disclosed in the aforementioned embodiment and are not further detailed here.

[0097] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0098] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0099] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A method for adjusting a small table on a car seat backrest, characterized in that: The following steps are involved: When a passenger is seated in the rear seat of the vehicle and the small table behind the front seatback is open, obtaining first coordinate information of the passenger's heel point, second coordinate information of the passenger's H point, and third coordinate information of the center point of the open small table; Based on the third coordinate information of the center point of the tray table and the second coordinate information of the occupant's H point, the actual position information of the center point of the tray table relative to the occupant's H point is calculated, and at the same time, the target position information of the center point of the tray table relative to the occupant's H point is determined according to the preset correlation relationship between the first coordinate information and the second coordinate information; An adjustment plan for the small table top is determined based on the actual position information and the target position information.

2. The method for adjusting a small table on a car seat backrest according to claim 1, wherein: The target position information includes a target distance difference in a height direction and a target distance difference in a horizontal direction, and the actual position information includes an actual distance difference in a height direction and an actual distance difference in a horizontal direction.

3. The method for adjusting a small table on a car seat backrest according to claim 2, wherein: In the step of "calculating the actual position information of the center point of the tray table relative to the occupant's H point based on the third coordinate information of the center point of the tray table and the second coordinate information of the occupant's H point, and determining the target position information of the center point of the tray table relative to the occupant's H point based on the preset correlation between the first coordinate information and the second coordinate information": determining, based on the first coordinate information and the second coordinate information, a height difference between a heel point of the occupant and an H point of the occupant as a first height difference; Based on a preset association between the first height difference and the target position information, a target distance difference in the height direction and a target distance difference in the horizontal direction of the center point of the small table relative to the occupant's H point are determined.

4. The method for adjusting a small table on a car seat backrest according to claim 3, wherein: The preset association relationship between the first height difference and the target position information includes: L1=a1*H0 2 +b1*H0+c1 <h2 style=";text-align:left;direction:ltr">H1 = a2*H0<h2 style=";text-align:left;direction:ltr"> 2 <h2 style=";text-align:left;direction:ltr"> +b2*H0+c2 Among them, H0 is the first height difference, H1 is the target distance difference in the height direction, L1 is the target distance difference in the horizontal direction, and a1, b1, c1, a2, b2, and c2 are all coefficients.

5. The method for adjusting a small table on a car seat backrest according to claim 2, wherein: The step of "determining an adjustment plan for the small table according to the actual position information and the target position information" includes: In the actual position information and the target position information, when the distance difference in the height direction and the distance difference in the horizontal direction are the same, the small table is controlled to maintain the current position.

6. The method for adjusting a small table on a car seat backrest as claimed in claim 2, wherein: The step of "determining an adjustment plan for the small table according to the actual position information and the target position information" includes: When at least one of a height difference and a horizontal distance difference between the actual position information and the target position information is different, the small table is controlled to adjust its position.

7. The method for adjusting a small table on a car seat backrest according to claim 6, wherein: The step of “controlling the small table to adjust the position when at least one of the height difference and the horizontal distance difference between the actual position information and the target position information is different” includes: When the actual distance difference in the height direction is greater than or less than the target distance difference in the height direction, the small table is adjusted to move downward or upward.

8. The method for adjusting a small table on a car seat backrest according to claim 6, wherein: The step of “controlling the small table to adjust the position when at least one of the height difference and the horizontal distance difference between the actual position information and the target position information is different” includes: When the actual distance difference in the horizontal direction is greater than or less than the target distance difference in the horizontal direction, the small table is adjusted to move horizontally toward the occupant or away from the occupant.

9. A control device, characterized in that: The control device includes: a memory, a processor, and a car seat back table adjustment program stored in the memory and runnable on the processor, wherein the car seat back table adjustment program is configured to implement the steps of the car seat back table adjustment method as described in any one of claims 1 to 8.

10. An automobile, characterized in that: include: The data acquisition device includes a floor mat sensor, a seat sensor, and a small table sensor, which are respectively used to obtain first coordinate information of the occupant's heel point, second coordinate information of the occupant's H point, and third coordinate information of the center point of the opened small table; A front seat assembly including a seat back and a small table, wherein the small table is mounted on the seat back via an adjustment mechanism so as to be movable in horizontal and vertical directions and to be able to swing in the vertical direction; and The control device according to claim 9, wherein the control device is electrically connected to the data acquisition device and the adjustment mechanism to control the operation of the adjustment mechanism according to the detection result of the data acquisition device.

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