Seat assembly and vehicle

Abstract

The invention discloses a seat assembly and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of how to improve the fitness between a massage device in a vehicle seat and legs of a driver and passengers. The seat assembly comprises a seat body, a fixing plate, a first massage structure and a detection device, and the fixing plate is connected to the seat body and can rotate relative to the seat body so as to adjust the angle of the fixing plate relative to the lower surface of the seat body; the first massage structure is connected to the fixing plate and used for massaging the sides, facing the fixing plate, of the legs. The detection device is used for detecting physical sign data of a driver and passengers; the optimal angle of the fixing plate relative to the lower surface is calculated according to the physical sign data of the driver and passengers, and when the position of the leg meets the adjusting condition of the fixing plate, the fixing plate is adjusted to the optimal angle, so that the first massage structure is optimally attached to the leg.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and in particular, to a seat assembly and a vehicle. Background Art

[0002] The seats in vehicles are used for passengers to sit on, and their comfort is directly related to the riding experience of the passengers. In order to improve the riding comfort, many vehicle seats are equipped with massage devices, which are used to massage the legs of the passengers when they are riding in the vehicle, so as to improve the riding comfort of the passengers.

[0003] In the prior art, the massage device equipped in the vehicle seat has a poor fit with the legs of the passengers, which reduces the comfort of the massage. Summary of the Invention

[0004] The purpose of the present application is to provide a seat assembly and a vehicle, aiming to solve the problem of how to improve the fit between the massage device in the vehicle seat and the legs of the passengers.

[0005] In the first aspect of the present application, a seat assembly is provided. The seat assembly includes a seat body, a fixing plate, a first massage structure and a detection device. Among them, the fixing plate is connected to the seat body and can rotate relative to the seat body to adjust the angle of the fixing plate relative to the lower surface of the seat body. The first massage structure is connected to the fixing plate and is used to massage the side of the leg facing the fixing plate. The detection device is used to detect the physical sign data of the passengers.

[0006] The seat assembly is configured as follows:

[0007] After the passenger sits on the seat, calculate the optimal angle of the fixing plate relative to the lower surface according to the physical sign data of the passenger. When the fixing plate is at the optimal angle, the first massage structure fits best with the legs of the passenger;

[0008] When the position of the leg meets the adjustment condition of the fixing plate, adjust the fixing plate to the optimal angle so that the first massage structure fits best with the leg.

[0009] In the above solution, when the passenger sits on the seat, the legs are massaged by the first massage structure, and the first massage structure is connected to the fixing plate. Therefore, whether the leg fits with the first massage structure mainly depends on the angle between the fixing plate and the leg. By detecting the physical sign data of the passenger and calculating the position of the fixing plate through the physical sign data of the passenger, the fit between the first massage structure provided on the fixing plate and the legs of the passenger is improved, thereby improving the comfort of the leg massage of the seat assembly.

[0010] Optionally, the physical sign data includes the pressure of the occupant on the seat and the leg length of the occupant;

[0011] Calculating the optimal angle of the fixing plate relative to the lower surface according to the physical sign data of the occupant includes:

[0012] Fitting an angle adjustment curve of the fixing plate according to the pressure and the leg length, where the angle adjustment curve is used to calculate the optimal angle of the fixing plate under different pressures and different leg lengths.

[0013] Optionally, the angle adjustment curve is: θ = 20.5 + 0.8x + 0.7h + 0.001x 2 + 0.0005h 2 + 0.0002xh, where h = l * m, x is the pressure, l is the leg length, and m is an empirical coefficient, 3.5 ≤ m ≤ 4.

[0014] Optionally, the seat assembly is further configured to:

[0015] If the massage function of the seat assembly is turned on, detect whether the leg of the occupant extends to the limit position, where the limit position is the position where the leg extends to interfere with an object on the front side of the seat assembly;

[0016] If the leg does not extend to the limit position, it means that the position of the leg meets the adjustment condition of the fixing plate.

[0017] Optionally, the seat assembly further includes:

[0018] Calculating the limit angle of the fixing plate, where the limit angle is the angle when the fixing plate rotates relative to the lower surface to the actual pressure on the leg is the first preset pressure when the leg extends to the limit position;

[0019] If the leg extends to the limit position, control the fixing plate to rotate to the limit angle.

[0020] Optionally, calculating the limit angle of the fixing plate includes:

[0021] Obtaining a preset leg, where the leg length of the preset leg meets the preset leg length;

[0022] When the preset leg extends to the limit position and the fixing plate rotates to contact the first massage structure with the preset leg, the angle between the fixing plate and the lower surface is the limit angle.

[0023] Optionally, the seat assembly includes a front row seat and a rear row seat. The front row seat is disposed on the front side of the rear row seat, and the fixing plate is disposed on the rear row seat.

[0024] The front row seat has a first position and a second position, and the second position is located on the front side of the first position.

[0025] The limit angle includes a first limit angle, and the first limit angle is the limit angle of the fixing plate when the front row seat is in the first position.

[0026] The seat assembly is further configured to:

[0027] When the front row seat is in the first position, determine whether there is a person on the front row seat;

[0028] If there is a person on the front row seat, then determine whether the legs of the driver and passengers on the rear row seat are in the limit position;

[0029] If the legs of the driver and passengers on the rear row seat are in the limit position, then control the fixing plate to rotate to the first limit angle.

[0030] Optionally, the limit angle includes a second limit angle, and the second limit angle is the limit angle of the fixing plate when the front row seat is in the second position.

[0031] The seat assembly is further configured to:

[0032] If there is no person on the front row seat, then control the front row seat to move to the second position;

[0033] Determine whether the legs of the driver and passengers on the rear row seat are in the limit position;

[0034] If the legs of the driver and passengers on the rear row seat are in the limit position, then control the fixing plate to rotate to the second limit angle.

[0035] Optionally, the fixing plate can move along the height direction of the seat body;

[0036] The seat assembly is further configured to: adjust the height of the fixing plate according to the physical sign data so as to adjust the fitting position between the first massage structure and the legs.

[0037] Optionally, the relationship between the height f of the fixing plate relative to the lower surface of the seat assembly and the leg length l satisfies: f = l * n, where n is an empirical coefficient and 0.2 ≤ n ≤ 0.3.

[0038] Optionally, the detection device includes a first pressure detection member and a leg length detection member. The first pressure detection member is connected to the seat body and is used to detect the first pressure of the occupant on the seat body. The leg length detection member is used to detect the leg length of the occupant.

[0039] Optionally, the first massage structure includes a first massage airbag.

[0040] Optionally, the seat assembly further includes a second massage structure. The second massage structure is connected to the fixing plate and can be switched between an unfolded state and a retracted state relative to the fixing plate.

[0041] The second massage structure includes a first massage member and a second massage member. The first massage member includes a first massage surface, and the second massage member includes a second massage surface. When the second massage structure is in the unfolded state, the first massage surface and the second massage surface face each other and define a space for placing the legs. When the second massage structure is in the retracted state, both the first massage surface and the second massage surface face away from the fixing plate.

[0042] Optionally, the seat assembly is further configured to:

[0043] When the occupant sits on the seat body and the massage function of the seat assembly is activated, control the second massage structure to switch to the unfolded state.

[0044] Optionally, the seat assembly further includes a second pressure detection member. The second pressure detection member is connected to the second massage structure and is used to detect the second pressure generated by the first massage member and the second massage member on the legs.

[0045] Optionally, the first massage member includes a second massage airbag, and the second massage member includes a third massage airbag.

[0046] Optionally, the seat assembly is further configured to:

[0047] When the second pressure is greater than a second preset pressure, control the second massage airbag and the third massage airbag to deflate;

[0048] When the second pressure is less than the second preset pressure, control the second massage airbag and the third massage airbag to inflate.

[0049] Optionally, the first massage member further includes a first support plate. The second massage airbag is connected to the first support plate. When the second massage structure is in the unfolded state, the first massage airbag faces the second massage member.

[0050] Optionally, the inflation thickness d of the second massage airbag in the thickness direction of the first support plate and the second pressure F satisfy: d = -0.00002F 2 -0.003F + 3.0

[0051] Optionally, the detection device includes a first pressure detection member for detecting a first pressure generated by the occupant on the seat body

[0052] The seat assembly is further configured to

[0053] If the duration of the first pressure exceeds a preset duration, it indicates that the occupant is sitting on the seat body

[0054] In a second aspect of the present application, a vehicle is provided, including a seat assembly

[0055] It should be noted that the technical effects brought by the implementation manners of the second aspect of the present application can be referred to the technical effects brought by the corresponding implementation manners of the first aspect, and will not be elaborated here BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts

[0057] Figure 1 It is a schematic structural diagram of a vehicle provided by an embodiment of the present application

[0058] Figure 2 For Figure 1 It is a schematic structural diagram of the seat assembly inside the vehicle in

[0059] Figure 3 For Figure 2 It is a schematic structural diagram of the leg rest device of the seat assembly in

[0060] Figure 4 For Figure 3 It is a schematic structural diagram of the leg rest device in a second viewing angle in

[0061] Figure 5 For Figure 3 It is a schematic structural diagram of the leg rest device in a third viewing angle in

[0062] Figure 6 It is a schematic driving structure diagram provided by an embodiment of the present application

[0063] Figure 7Schematic diagram of the connection structure between the driving structure and the first massage member provided by the embodiment of the present application;

[0064] Figure 8 is the control flow of the seat assembly provided by the embodiment of the present application Figure One

[0065] Figure 9 is the control flow of the seat assembly provided by the embodiment of the present application Figure Two 。

[0066] Reference numerals:

[0067] 100, vehicle;

[0068] 10, vehicle body; 20, seat assembly; 21, leg rest device;

[0069] 1, seat body;

[0070] 2, fixing plate;

[0071] 3, first massage structure; 31, first massage airbag;

[0072] 4, four-way adjustment mechanism; 41, first bracket; 42, third driving member; 43, first transmission member; 44, fourth driving member; 45, second transmission member; 46, second bracket;

[0073] 5, second massage structure; 51, first massage member; 511, first massage surface; 512, first support plate; 52, second massage member; 521, second massage surface; 522, second support plate;

[0074] 6, driving structure; 61, first worm; 62, first worm gear; 63, first motor; 64, first transmission shaft; 65, first rotating shaft; 66, first connecting rod; 67, second connecting rod; 68, second worm gear; 69, second worm. Detailed implementation manners

[0075] In the embodiments of the present application, the terms "first", "second", "third", "fourth", "fifth", and "sixth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", "fourth", "fifth", and "sixth" may explicitly or implicitly include one or more of such features.

[0076] In the embodiments of the present application, the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element.

[0077] "A and / or B" includes the following three combinations: only A, only B, and the combination of A and B.

[0078] In the embodiments of the present application, "parallel", "perpendicular", and "equal" include the described situations and situations similar to the described situations, and the range of the similar situations is within an acceptable deviation range, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurements being discussed and the errors associated with the measurements of specific quantities (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, and the acceptable deviation range for approximate parallelism can be, for example, within 5° deviation; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, and the acceptable deviation range for approximate perpendicularity can also be, for example, within 5° deviation. "Equal" includes absolute equality and approximate equality, and the acceptable deviation range for approximate equality can be, for example, that the difference between the two equal values is less than or equal to 5% of either one of them.

[0079] With the improvement of living quality, people's requirements for the comfort of seats are also getting higher and higher. For example, by providing a leg rest device 21 in the seat assembly 20, the leg rest device 21 supports the legs of the passengers to cooperate with different sitting postures of the passengers and improve the riding comfort. A massage structure can also be provided in the leg rest device 21 to massage the legs to relieve fatigue and please the mood and improve the riding comfort.

[0080] It should be understood that the seat assembly 20 can be a seat for home or office use, or a seat for public places, such as seats used in places like cinemas and cafes. The seat can also be a seat used in a vehicle, such as a seat on an airplane, a seat on a train, a seat in a car, etc.

[0081] For the convenience of understanding, the embodiments of the present application will be described by taking the seat assembly 20 applied to a vehicle 100 as an example.

[0082] Refer to Figure 1 , Figure 1A schematic structural diagram of a vehicle 100 provided by an embodiment of the present application. The vehicle 100 can be a pure gasoline vehicle, a pure electric vehicle, a gasoline-electric hybrid vehicle, etc. The vehicle 100 can also be a sedan, a bus, a truck, a lorry, a trailer, etc.

[0083] The vehicle 100 may include a body 10 and a seat assembly 20 disposed inside the body 10. The seat assembly 20 is connected to the body 10 through a frame, and the seat assembly 20 is used for carrying people or goods. The seat assembly 20 may include a front row seat and a rear row seat. The front row seat is disposed in front of the rear row seat, and a fixing plate 2 is disposed on the rear row seat. The front row seat has a first position and a second position, and the second position is located in front of the first position. Among them, the first position is the position where the front row seat is when carrying people, and the second position is the position when the front row seat moves to the most forward position.

[0084] Refer to Figure 2 , Figure 2 For Figure 1 A schematic structural diagram of the seat assembly 20 inside the vehicle 100 in . The seat assembly 20 may include a seat body 1 and a leg rest device 21. The leg rest device 21 may be connected to the front row seat or the rear row seat. In this application, the leg rest device 21 is connected to the rear row seat for exemplary illustration.

[0085] Among them, the seat body 1 may include a seat cushion and a backrest. The seat cushion is for the driver and passengers to sit on, and the backrest is for the driver and passengers to lean on their backs. The leg rest device 21 is connected to the seat body 1 and is used to support the legs of the driver and passengers to adapt to different sitting postures of the driver and passengers. The exemplary leg rest device 21 is connected to the front end of the seat cushion. The leg rest device 21 may further include an adjustment mechanism, a fixing plate 2, and a massage device. The adjustment mechanism is connected to the seat body 1. The fixing plate 2 is connected to the adjustment mechanism and is located below the end of the seat cushion away from the backrest. The massage device is disposed on the fixing plate 2. The adjustment mechanism drives the fixing plate 2 to move, thereby adjusting the height and / or the angle relative to the lower surface of the seat body 1 of the massage device, so as to improve the fitting degree between the massage device and the legs of the driver and passengers and improve the massage comfort.

[0086] In some embodiments, the fixing plate 2 is connected to the seat body 1 through an adjustment mechanism and can rotate relative to the seat body 1 to adjust the angle of the fixing plate 2 relative to the lower surface of the seat body 1. It should be noted that the rotation of the fixing plate 2 relative to the seat body 1 is a rotation around an axis in the seat width direction, which enables better support for the legs through the rotation of the fixing plate 2. The lower surface of the seat body 1 refers to the surface where the seat body 1 is connected to the floor of the vehicle 100. It should be understood that the legs in this embodiment are the calf parts of the driver and passengers, and the leg rest device 21 also supports the calf parts of the driver and passengers.

[0087] In some examples, refer toFigure 3 , Figure 4 , Figure 5 , the adjusting mechanism can be a four-way adjusting mechanism 4. The four-way adjusting mechanism 4 includes a first bracket 41. The fixing plate 2 is connected to the first bracket 41 and can move relative to the first bracket 41 along the height direction of the seat body 1. The four-way adjusting mechanism 4 further includes a third driving member 42 and a first transmission member 43. The first transmission member 43 is connected between the third driving member 42 and the fixing plate 2. The third driving member 42 drives the fixing plate 2 to move along the height direction of the seat body 1 through the first transmission member 43.

[0088] In some examples, the third driving member 42 can be a motor, a pneumatic motor, etc.

[0089] In some embodiments, a first threaded hole is provided on the first bracket 41; the first transmission member 43 is a first lead screw. The first lead screw passes through the first threaded hole and is threadedly connected to the first threaded hole.

[0090] In this way, through the cooperation of the first threaded hole and the first lead screw, and the thread and the lead screw also have a self-locking function, the first bracket 41 and the first transmission member 43 can be fixed. In addition, the structure of the threaded lead screw is relatively simple and easy to implement.

[0091] In some other embodiments, the first transmission member 43 can also be a gear-rack structure, a worm and worm gear lifting structure, etc.

[0092] In some embodiments, the four-way adjusting mechanism 4 further includes a second bracket 46. The second bracket 46 is adapted to be connected to the seat body 1. The upper end of the first bracket 41 is rotatably connected to the second bracket 46. The four-way adjusting mechanism 4 further includes a fourth driving member 44 and a second transmission member 45. The second transmission member 45 is connected between the fourth driving member 44 and the lower end of the first bracket 41. The fourth driving member 44 drives the first bracket 41 to rotate through the second transmission member 45.

[0093] In this way, by connecting the second transmission member 45 between the fourth driving member 44 and the lower end of the first bracket 41, the fourth driving member 44 can output a driving force. The driving force pushes the first bracket 41 to rotate, thereby driving the first massage structure 3 to rotate relative to the second bracket 46, adjusting the angle of the first massage structure 3 relative to the lower surface of the seat body 1, so that the first massage structure 3 adapts to the needs of different occupants, making the first massage structure 3 fit more closely to the legs, improving the massage effect, and improving the experience effect of the occupants.

[0094] In some examples, the fourth driving member 44 can be a motor, a pneumatic motor, etc.

[0095] In some embodiments, the four-way adjustment mechanism 4 further includes a second bracket 46 which is provided with a second threaded hole; the second transmission member 45 is a second lead screw which is disposed through the second threaded hole and threadedly connected to the second threaded hole, and the second lead screw is rotatably connected to the first bracket 41. Exemplarily, the second lead screw is rotatably connected to the lower end of the first bracket 41 to prevent the second lead screw from jamming with the first bracket 41 when the second lead screw pushes the first bracket 41 to rotate.

[0096] In some examples, in order to improve the fitting degree between the massage device and the leg, a control device may be further provided. The control device controls the operation of the four-way adjustment mechanism 4 based on the data detected by the detection device, thereby driving the massage device on the fixing plate 2 to fit the leg and improving the comfort of the massage. Among them, the control device may be disposed on the seat or on the vehicle 100. In the above solution, when the driver and passenger sit on the seat, the first massage structure 3 massages the leg, and the first massage structure 3 is connected to the fixing plate 2. Therefore, whether the leg fits with the first massage structure 3 mainly depends on the angle between the fixing plate 2 and the leg. By detecting the physical signs data of the driver and passenger, and calculating the position of the fixing plate 2 through the physical signs data of the driver and passenger, the fitting degree between the first massage structure 3 provided on the fixing plate 2 and the leg of the driver and passenger is improved, thereby improving the comfort of the seat assembly 20 for massaging the leg.

[0097] In some embodiments, the massage device includes a first massage structure 3 which is connected to the fixing plate 2 and is used for massaging the side of the leg facing the fixing plate 2.

[0098] In some embodiments, the first massage structure 3 includes a first massage airbag 31. The first massage airbag 31 massages the leg by driving the airbag with gas. By massaging the leg with the first massage airbag 31, it has the advantages of large force-bearing area and strong wrapping property, and improves the comfort of the seat assembly 20 for massaging.

[0099] In some other examples, the first massage structure 3 may include an electric scraper, an electric massage ball, etc.

[0100] To provide a good massage experience, the seat assembly 20 further includes a detection device which is used for detecting the physical signs data of the driver and passenger. Among them, the physical signs data of the driver and passenger may include the weight data, height data, leg length data, etc. of the driver and passenger.

[0101] In some embodiments, the detection device includes a first pressure detection member and a leg length detection member. The first pressure detection member is connected to the seat body 1 and is used for detecting the first pressure of the driver and passenger on the seat body 1, and the leg length detection member is used for detecting the leg length of the driver and passenger. The first pressure of the driver and passenger on the seat body 1 is detected by the first pressure detection member, and the leg length of the driver and passenger is detected by the leg length detection member.

[0102] In some examples, the first pressure detection component may include a pressure sensor. The pressure sensor is disposed on the seat cushion. When the driver or passenger sits on the seat, the weight data of the driver or passenger can be obtained through the pressure sensor.

[0103] In some examples, there may be multiple pressure sensors, and the multiple pressure sensors are disposed at different positions on the seat cushion.

[0104] In some specific examples, the pressure sensor may be a capacitive pressure sensor, which changes the capacitance value by detecting the change in the plate distance or area caused by pressure, and directly measures the pressure change.

[0105] In another example, the pressure sensor may be a piezoelectric pressure sensor, which utilizes the piezoelectric effect to convert pressure into an electrical signal, and then measures the pressure value.

[0106] In some examples, the leg length detection component may include a visual recognition device. The visual recognition device may include components such as a camera. An image or video sequence of the driver or passenger is obtained through components such as the camera. Then, the region of the human body in the image is located through an object detection algorithm, and the 2D coordinate system of the joint points is extracted through a pose estimation algorithm, such as the top of the head, neck, hip, knee, ankle, etc. Then, based on the camera internal parameters and the pixel coordinates of the human body key points, combined with the ground plane hypothesis, the actual leg length data of the driver or passenger is calculated through geometric relationships. Among them, the visual recognition device may be installed on the seat or on the vehicle 100.

[0107] In some examples, the first pressure detection component may be a pressure sensor.

[0108] In some examples, there may be one first pressure detection component, and the overall pressure of the driver or passenger on the seat body 1 is detected through one first pressure detection component.

[0109] In other examples, there may be multiple first pressure detection components. The multiple first pressure detection components may be disposed at different positions on the seat cushion, and the pressure of the legs on multiple positions of the seat body 1 is detected through the multiple first pressure detection components.

[0110] In some examples, the leg length detection component may be a visual recognition device, such as a camera, etc. Among them, the visual recognition device may be installed at positions such as the front row seat or the door, and the leg length of the driver or passenger is detected through the visual recognition device.

[0111] In some embodiments, referring to Figure 3 、 Figure 4 ,the seat assembly 20 further includes a second massage structure 5. The second massage structure 5 is connected to the fixing plate 2 and can be switched between an unfolded state and a retracted state relative to the fixing plate 2.

[0112] The second massage structure 5 includes a first massage member 51 and a second massage member 52. The first massage member 51 includes a first massage surface 511, and the second massage member 52 includes a second massage surface 521. When the second massage structure 5 is in the deployed state, the first massage surface 511 and the second massage surface 521 face each other and define a space for placing the legs; when the second massage structure 5 is in the retracted state, both the first massage surface 511 and the second massage surface 521 face away from the fixed plate 2. When the second massage structure 5 is in the deployed state, the first massage surface 511 and the second massage surface 521 face each other and define a space for placing the legs. The two sides of the legs of the driver and passengers are massaged by the first massage surface 511 and the second massage surface 521, increasing the massage area of the legs and improving the massage comfort. When the second massage structure 5 is in the retracted state, both the first massage surface 511 and the second massage surface 521 face away from the fixed plate 2. At this time, the first massage surface 511 and the second massage surface 521 face the legs of the driver and passengers, increasing the massage area of the seat assembly 20. By switching the second massage structure 5 between the deployed state and the retracted state, different massage postures are achieved, improving the usage flexibility.

[0113] In some examples, the first massage member 51 and the second massage member 52 of the second massage structure 5 can be respectively rotatably connected to the fixed plate 2. By rotating the first massage member 51 and the second massage member 52 relative to the fixed plate 2, the deployed state and the retracted state of the second massage structure 5 are achieved.

[0114] In some examples, the seat assembly 20 further includes a drive structure 6. Among them, the drive structure 6 includes a transmission component and a drive member. The first massage member 51 and the second massage member 52 are rotatably connected to the fixed plate 2 through the transmission component, so that the massage mechanism can be switched between the deployed state and the retracted state.

[0115] In some examples, refer to Figure 6 、 Figure 7 , the transmission component includes a first worm 61, a first worm gear 62 and a first rotating shaft 65, and the drive member includes a first motor 63 and a first transmission shaft 64. The first motor 63 is connected to the first transmission shaft 64, the first worm 61 is connected to the first transmission shaft 64, the first worm gear is fixedly connected to the first rotating shaft 65, the driving force output by the first motor 63 is transmitted to the first worm 61 through the first transmission shaft 64, and the first worm 61 meshes with the first worm gear 62 to drive the first worm gear 62 to rotate around the first rotating shaft 65. Among them, the first rotating shaft 65 is rotatably arranged and fixedly connected to the first massage member 51, so as to transmit the driving force to the first massage member 51 and the second massage member 52.

[0116] The transmission assembly further includes a first link 66 assembly. The first link 66 assembly includes a first link 66 and a second link 67. One end of the first link 66 is rotatably connected to the first massage member 51, and the other end of the first link 66 is connected to the first rotating shaft 65. One end of the second link 67 is rotatably connected to the first massage member 51, and the other end of the second link 67 is rotatably connected to the fixed plate 2. When the massage mechanism is in the unfolded state, the first link 66 and the second link 67 are arranged at intervals along the axial direction of the first transmission shaft 64.

[0117] In this way, the first link 66, the second link 67, the first massage member 51 and the fixed plate 2 form a four-bar linkage structure. When the first rotating shaft 65 rotates, it can drive the first link 66 to rotate, and drive the second link 67 and the first massage member 51 to swing through the first link 66. That is, the first link 66 and the second link 67 can define the swinging trajectory of the first massage member 51, so that the second massage structure 5 can be switched between the unfolded state and the retracted state.

[0118] It should be understood that the drive structure 6 of the second massage member 52 is the same as that of the first massage member 51, and the difference is that the rotation directions of the second massage member 52 and the first massage member 51 are different. Therefore, the helix directions of the second worm gear 68 and the second worm 69 connecting the second massage member 52 are opposite to the helix directions of the first worm gear and the first worm 61.

[0119] In some embodiments, the seat assembly 20 further includes a second pressure detection member connected to the second massage structure 5 for detecting the second pressure generated by the first massage member 51 and the second massage member 52 on the legs. By detecting the second pressure generated by the first massage member 51 and the second massage member 52 on both sides of the legs through the second pressure detection member, it is possible to prevent the massage pressure applied by the first massage member 51 and the second massage member 52 on both sides of the legs from being too large, causing discomfort to the legs; at the same time, it is also possible to prevent the pressure applied by the first massage member 51 and the second massage member 52 on both sides of the legs from being too small, reducing the massage feeling. By detecting the second pressure through the second pressure detection member, the comfort of the second massage structure 5 for massaging the legs is improved.

[0120] It should be understood that the second pressure detection member can be the same as or different from the first pressure detection member.

[0121] In some examples, the second pressure detection member can be disposed on the first massage surface 511 and the second massage surface 521.

[0122] In some embodiments, the first massage member 51 includes a second massage airbag, and the second massage member 52 includes a third massage airbag. The first massage member 51 massages the leg through the second massage airbag, and the second massage member 52 massages the leg through the third massage airbag. Since the second massage airbag and the third massage airbag are driven by gas for massage and have good shock absorption ability, they can prevent impact or excessive squeezing on the leg during the massage process and improve the massage comfort.

[0123] In some examples, the second massage surface 521 is the surface of the second massage airbag on the side close to the leg. The third massage surface is the surface of the third massage airbag on the side close to the leg.

[0124] In some examples, the second pressure detection member is disposed on the second massage surface 521 and the third massage surface.

[0125] In some examples, the numbers of the second massage airbag and the third massage airbag are both multiple. The multiple second massage airbags and third massage airbags massage multiple positions on the leg, improving the massage comfort.

[0126] In some embodiments, the first massage member 51 further includes a first support plate 512. The second massage airbag is connected to the first support plate 512. When the second massage structure 5 is in the unfolded state, the second massage airbag is disposed on the side of the first support plate 512 facing the second massage member 52. The second massage airbag is connected to the first support plate 512, and the first support plate 512 drives the second massage airbag to move, realizing the movement of the second massage structure 5 between the unfolded state and the retracted state. The structure is simple and convenient for processing. And when there are multiple second massage airbags, the multiple second massage airbags are all connected to the first support plate 512, ensuring the synchronization of the movement of the multiple second massage airbags.

[0127] In some examples, the first support plate 512 is rotatably connected to the fixed plate 2.

[0128] In some examples, the second massage member 52 includes a second support plate 522, and the third massage airbag is connected to the second support plate 522. Among them, the structure of the second support plate 522 can be the same as the structure of the first support plate 512.

[0129] In some embodiments, the seat assembly 20 is configured to:

[0130] After the driver or passenger sits on the seat, calculate the optimal angle of the fixed plate 2 relative to the lower surface of the seat body 1 according to the physical sign data of the driver or passenger. When the fixed plate 2 is at the optimal angle, the first massage structure 3 fits the leg of the driver or passenger best;

[0131] When the position of the leg meets the adjustment condition of the fixing plate 2, adjust the fixing plate 2 to the optimal angle so that the first massage structure 3 fits the leg best. Since the first massage structure 3 is connected to the fixing plate 2, calculate the optimal angle of the fixing plate 2 relative to the lower surface of the seat body 1 based on the physical sign data of the driver and passenger, and when the leg position meets the adjustment condition, adjust the fixing plate 2 to the optimal angle to make the first massage structure 3 fit the leg best. Adjust the fixing plate 2 according to the specific information of the driver and passenger, improve the fitting degree between the first massage structure 3 and the leg, and thus improve the massage effect.

[0132] It should be understood that the optimal angle of the fixing plate 2 relative to the lower surface of the seat body 1 in this embodiment means that when the driver and passenger are sitting on the seat and along the length direction of their calf, when their calf forms a first angle with the lower surface of the seat body 1, if there is a second angle between the fixing plate 2 and the lower surface of the seat body 1, the second angle is equal to or has a small deviation from the first angle. For example, if the first angle is 15°, the second angle can be 15° or 14° - 16°. The angle between the fixing plate 2 and the lower surface of the seat body 1 at this time is the optimal angle of the fixing plate 2 relative to the lower surface of the seat body 1. Because at this time, the fixing plate 2 and the leg are in a parallel or approximately parallel state, so that the first massage structure 3 provided with the fixing plate 2 fits the leg best.

[0133] In some examples, in order to improve the fitting degree between the fixing plate 2 and the leg, the four-way adjustment mechanism 4 can be controlled by the control device to drive the fixing plate 2 to rotate. Refer to Figure 8 , the control process can include the following steps:

[0134] S101. Obtain the physical sign data of the driver and passenger. Among them, the physical sign data can include the weight data, height data, leg length data, etc. of the driver and passenger.

[0135] It should be understood that the physical sign data of the driver and passenger can be obtained through the detection device. For example, for the acquisition of weight data, a pressure sensor can be set on the seat body 1, and the weight data of the driver and passenger can be obtained through the pressure value detected by the pressure sensor. The acquisition of height data and leg length data can be achieved by installing a visual recognition device on the vehicle 100 and obtaining the height data and leg length data of the driver and passenger through the visual recognition device.

[0136] S102. Calculate the optimal angle of the fixing plate 2 relative to the lower surface of the seat body 1 according to the physical sign data of the driver and passenger. It should be understood that the optimal angle of the fixing plate 2 relative to the lower surface of the seat body 1 in this embodiment means the angle at which the fixing plate 2 is located when the first massage structure 3 fits the leg best when the driver and passenger are sitting on the seat.

[0137] S103. Determine whether the leg position of the driver and passengers meets the adjustment conditions of the fixing plate 2. Among them, the adjustment conditions of the fixing plate 2 can be: after adjustment, the fixing plate 2 should not make the legs of the driver and passengers contact the items in front of the seat assembly 20.

[0138] S104. If the leg position of the driver and passengers meets the adjustment conditions of the fixing plate 2, adjust the fixing plate 2 to the optimal angle to improve the fitting degree between the first massage structure 3 and the legs.

[0139] In some embodiments, the physical sign data includes the pressure of the driver and passengers on the seat and the leg length of the driver and passengers. Calculating the optimal angle of the fixing plate 2 relative to the lower surface according to the physical sign data of the driver and passengers includes:

[0140] Fitting the angle adjustment curve of the fixing plate 2 according to the pressure and leg length. The angle adjustment curve is used to calculate the optimal angle of the fixing plate 2 under different pressures and different leg lengths. According to the pressure of the driver and passengers on the seat and in combination with the leg length, the optimal angle of the fixing plate 2 can be accurately calculated, improving the fitting degree between the fixing plate 2 and the legs, thereby improving the massage comfort.

[0141] In some other examples, the pressure can be the pressure of the driver and passengers on the seat cushion. Pressure sensors can be respectively arranged at multiple positions of the seat cushion, and the pressures of the driver and passengers on different positions of the seat cushion are obtained through the multiple pressure sensors to improve the measurement accuracy.

[0142] In some specific examples, the angle adjustment curve is:

[0143] θ = 20.5 + 0.8x + 0.7h + 0.001x 2 + 0.0005h 2 + 0.0002xh, where h = l * m, x is the pressure, unit N; l is the leg length, unit mm; m is an empirical coefficient, 3.5 ≤ m ≤ 4. By substituting the leg length and the pressure on the seat of the driver and passengers into the angle adjustment curve, the angle of the fixing plate 2 relative to the lower surface of the seat body 1 can be calculated, and this angle is the optimal angle of the fixing plate 2. The fixing plate 2 is adjusted to this angle according to the calculated angle, improving the fitting degree with the legs and the massage comfort of the driver and passengers. In addition, when the pressure value of the legs of the driver and passengers on the seat changes, the angle calculated by the angle adjustment curve also changes, and the fixing plate 2 rotates to the corresponding position with the change of the angle. The fixing plate 2 follows the movement of the legs, and when the legs move, it still has a good massage effect.

[0144] In some other embodiments, the physical sign data includes the distance between the fixing plate 2 and the leg. The angle adjustment of the fixing plate 2 relative to the lower surface of the seat body 1 can also be achieved by arranging at least two infrared ranging modules along the length direction of the leg on the fixing plate 2. The infrared ranging modules emit infrared light and receive the reflected signals to calculate the distance between the fixing plate 2 and the leg. Based on the different distance values detected by the two infrared ranging modules, the angle between the fixing plate 2 and the leg is calculated, and the angle of the fixing plate 2 is adjusted according to the calculated angle.

[0145] In some embodiments, the seat assembly 20 is further configured to:

[0146] If the massage function of the seat assembly 20 is turned on, it is detected whether the leg of the driver or passenger extends to the extreme position, where the extreme position is the position where the leg extends to interfere with an object on the front side of the seat assembly 20;

[0147] If the leg does not extend to the extreme position, it indicates that the position of the leg meets the adjustment condition of the fixing plate 2.

[0148] In some examples, the extreme position can be the extreme position calculated according to the actual length of the leg of the driver or passenger. When the leg is in the extreme position, it is the position where the leg just interferes with an object on the front side of the seat assembly 20.

[0149] In some other examples, the extreme position can be a preset position. For example, assuming a preset leg length that is greater than the maximum leg length of the driver or passenger. For example, the leg length of a normal person does not exceed 1.5 m, and the preset leg length can be set to 1.5 m. The leg with the preset leg length interferes with an object on the front side of the seat assembly 20, and the position of the leg with the preset leg length at this time is the extreme position.

[0150] When it is detected that the leg of the driver or passenger does not extend to the extreme position, the position of the leg of the driver or passenger meets the adjustment condition of the fixing plate 2, and the control device can adjust the fixing plate 2 according to the position of the leg of the driver or passenger, so that the first massage structure 3 fits the leg position better, improving the massage comfort.

[0151] In some examples, the object on the front side of the seat assembly 20 can be the bottom of the center console. For example, when the seat assembly 20 is a front row seat, the object on the front side of the seat assembly 20 is the bottom of the center console.

[0152] In some other examples, the object on the front side of the seat assembly 20 can be the front row seat. For example, when the seat assembly 20 is a rear row seat, the object on the front side of the seat assembly 20 is the front row seat.

[0153] In some embodiments, the seat assembly 20 further includes:

[0154] Calculate the limit angle of the fixed plate 2. The limit angle is the angle at which the fixed plate 2 rotates relative to the lower surface to the actual pressure on the leg being the first preset pressure when the leg is extended to the limit position.

[0155] In some embodiments, the seat assembly 20 includes a front row seat and a rear row seat. The front row seat is disposed on the front side of the rear row seat, and the fixed plate 2 is disposed on the rear row seat. The front row seat has a first position and a second position, and the second position is located on the front side of the first position. The limit angle includes a first limit angle, and the first limit angle is the limit angle of the fixed plate 2 when the front row seat is in the first position. When the front row seat is in the first position, set the limit angle between the fixed plate 2 and the front row seat in the first position, thereby limiting the rotation range of the fixed plate 2 to prevent the fixed plate 2 and the front row seat from squeezing the leg when the front row seat is in the first position.

[0156] In some embodiments, the limit angle includes a second limit angle, and the second limit angle is the limit angle of the fixed plate 2 when the front row seat is in the second position.

[0157] If the leg is extended to the limit position, then control the fixed plate 2 to rotate to the limit angle. When the limit angle of the fixed plate 2 is the same as the angle of the leg in the limit position, control the fixed plate 2 to rotate to the angle at which the pressure on the leg is the first preset pressure, preventing the fixed plate 2 from over-lifting the leg and causing interference between the leg and the object in front of the seat assembly 20, thereby squeezing the leg, and improving the safety of the seat assembly 20.

[0158] Wherein, when the leg is extended to the limit position and the fixed plate 2 is in the limit position, the angle at which the first massage member 51 fits the leg is the optimal angle, and the angle at which the first massage member 51 fits the leg can also be less than the optimal angle.

[0159] In some embodiments, calculating the limit angle of the fixed plate 2 includes:

[0160] Obtain a preset leg, and the leg length of the preset leg meets the preset leg length;

[0161] When the preset leg is extended to the limit position, the fixed plate 2 rotates until the first massage structure 3 contacts the preset leg and the pressure generated on the leg is the first preset pressure, the angle between the fixed plate 2 and the lower surface is the limit angle. The leg length value of the preset leg, and this leg length value can be greater than the leg length value of a normal person.

[0162] Therefore, the limit angle of the fixed plate 2 calculated through the leg length of the preset leg can ensure that the lifting position of the fixed plate 2 on the leg when a normal person is sitting does not exceed the limit position of the leg, preventing the fixed plate 2 from over-lifting the leg when there is an error in leg length recognition, causing the leg to be squeezed by the fixed plate 2 and the object in front of the seat assembly 20, and improving the safety of the seat assembly 20.

[0163] In some embodiments, the seat assembly 20 is further configured to:

[0164] When the front row seat is in the first position, determine whether there is someone on the front row seat;

[0165] If there is someone on the front row seat, determine whether the legs of the occupants on the rear row seat are in the extreme position;

[0166] If the legs of the occupants on the rear row seat are in the extreme position, control the fixed plate 2 to rotate to the first extreme angle.

[0167] In the above solution, when the seat assembly 20 is the rear row seat, if there is someone on the front row seat, it means that the front row seat cannot move to the second position, and the extreme angle of the fixed plate 2 relative to the lower surface of the seat body 1 is the first extreme angle when the seat is in the first position. If the legs of the occupants are in the extreme position, the fixed plate 2 rotates to the first extreme angle to lift the legs. When the legs of the occupants are in the extreme position, the fixed plate 2 rotates to the first extreme angle to achieve the maximum lift of the legs, but can avoid squeezing the legs, and maximally improves the comfort of the seat assembly 20 while ensuring safety.

[0168] In some embodiments, the seat assembly 20 is further configured to:

[0169] If there is no one on the front row seat, control the front row seat to move to the second position;

[0170] Determine whether the legs of the occupants on the rear row seat are in the extreme position;

[0171] If the legs of the occupants on the rear row seat are in the extreme position, control the fixed plate 2 to rotate to the second extreme angle.

[0172] In the above solution, when there is no one on the front row seat, the front row seat moves to the second position, thereby increasing the distance between the rear row seat and the front row seat, increasing the leg activity space of the occupants, and also increasing the rotation range of the fixed plate 2, so that the fixed plate 2 can fit the legs within a larger angle range, improving the comfort of the seat assembly 20.

[0173] In some embodiments, the fixed plate 2 can move along the height direction of the seat body 1;

[0174] The seat assembly 20 is further configured to: adjust the height of the fixed plate 2 according to the physical sign data to adjust the fitting position between the first massage structure 3 and the legs. Adjusting the height of the fixed plate 2 according to the physical sign data improves the fitting degree between the first massage structure 3 and the legs, and improves the comfort of the seat assembly 20.

[0175] In some examples, the fixing plate 2 can slide on the four-way adjustment mechanism 4 to move along the height direction of the seat body 1.

[0176] In some specific examples, the relationship between the height f of the fixing plate 2 relative to the lower surface of the seat assembly 20 and the leg length l satisfies: f = l * n, where n is an empirical coefficient, 0.2 ≤ n ≤ 0.3; l is the leg length, in millimeters. By calculating the height of the fixing plate 2 relative to the lower surface of the seat assembly 20 according to the leg length, the fixing plate 2 fits better with the legs in terms of height, improving the comfort of the fixing plate 2 in supporting the legs.

[0177] In some other examples, the height of the fixing plate 2 can be adjusted according to the pressure between the leg and the upper side of the fixing plate 2 along the height of the seat body 1. For example, a fixed pressure value is set. When the pressure between the leg and the upper side of the fixing plate 2 is less than the set fixed pressure value, the fixing plate 2 automatically moves up until the pressure value between the leg and the upper side of the fixing plate 2 meets the set fixed pressure value. When the pressure value between the leg and the upper side of the fixing plate 2 is greater than the set fixed pressure value, the fixing plate 2 is controlled to move down until the pressure value between the leg and the upper side of the fixing plate 2 meets the set fixed pressure value.

[0178] In some embodiments, the seat assembly 20 is further configured to:

[0179] When the driver or passenger sits on the seat body 1 and activates the massage function of the seat assembly 20, control the second massage structure 5 to switch to the deployed state. When the driver or passenger activates the massage function, the second massage structure 5 can be automatically switched to the deployed state through the four-way adjustment mechanism 4, and the first massage surface 511 and the second massage surface 521 of the second massage structure 5 are used to massage both sides of the leg, with a relatively fast massage speed, improving the driving and riding experience.

[0180] In some embodiments, the seat assembly 20 is further configured to:

[0181] When the second pressure is greater than the second preset pressure, control the second massage airbag and the third massage airbag to deflate;

[0182] When the second pressure is less than the second preset pressure, control the second massage airbag and the third massage airbag to inflate.

[0183] In the above solution, a second preset pressure is set, which can ensure the comfort of the leg massage by the second massage airbag and the third massage airbag. When the second pressure is less than the second preset pressure, the second massage airbag and the third massage airbag are inflated to prevent the massage force from being too small to have a massage effect; when the second pressure is greater than the second preset pressure, the second massage airbag and the third massage airbag are deflated to prevent the massage force from being too large and causing discomfort to the legs. By referring to the second preset pressure to control the inflation and deflation of the second massage airbag and the third massage airbag, the comfort of the massage is improved.

[0184] In some examples, for example, the second preset pressure is 40 KPa. When the second pressure is less than 40 KPa, the second massage airbag and the third massage airbag are inflated; when the second pressure is greater than 40 KPa, the second massage airbag and the third massage airbag are deflated.

[0185] In some examples, the inflation and deflation of the second massage airbag and the third massage airbag are carried out synchronously.

[0186] In other examples, the inflation and deflation of the second massage airbag and the third massage airbag are not carried out synchronously. For example, when the placement position of the leg is offset to one side of the second massage airbag, the pressure value between the second massage airbag and the leg will be greater than the pressure value between the third massage airbag and the leg. At this time, it is possible to deflate the second massage airbag while inflating the third massage airbag.

[0187] In some embodiments, the inflation thickness d of the second massage airbag in the thickness direction of the first support plate 512 and the second pressure F satisfy: d = -0.00002F 2 -0.003F + 3.0. By controlling the inflation thickness d of the second massage airbag in the thickness direction of the first support plate 512 through the second pressure, when the second pressure changes, the inflation thickness d of the second massage airbag changes accordingly through inflation and deflation, improving the comfort of the second massage airbag for massage.

[0188] In some examples, the control method of the inflation thickness of the third massage airbag in the thickness direction of the second support plate 522 is the same as that of the inflation thickness of the second massage airbag on the first support plate 512.

[0189] In some embodiments, the detection device includes a first pressure detection member, and the first pressure detection member is used to detect the first pressure generated by the driver and passenger on the seat body 1.

[0190] The seat assembly 20 is further configured as:

[0191] If the duration of the first pressure exceeds the preset duration, it indicates that the driver and passenger are sitting on the seat body 1.

[0192] The duration for which the driver or passenger is sitting on the seat is detected by the first pressure detection component to determine whether they are sitting on the seat. When it is determined that the driver or passenger is sitting on the seat, the angle and height of the fixing plate 2 can be adjusted so that the fixing plate 2 fits against the legs of the driver or passenger, improving the riding comfort.

[0193] In some examples, the preset duration can be 2s, 3s, 4s, 5s, etc. When the riding time of the driver or passenger exceeds the preset duration, the angle and position of the fixing plate 2 can be adjusted to fit against the legs of the driver or passenger. If the riding time is less than the preset duration, there is no need to adjust the position of the fixing plate 2. For example, in some scenarios, the driver or passenger does not need to ride in the vehicle 100 but just sits on the seat assembly 20 and then gets up and leaves, so there is no need to adjust the position of the fixing plate 2.

[0194] In some embodiments, referring to Figure 9 , an overall control process of the seat assembly 20 can be as follows:

[0195] S201. The passenger activates the leg rest control of the seat. Among them, the activation of the leg rest control can be achieved by setting an activation button and the passenger presses the activation button to actively activate the leg rest control; it can also be activated by voice control.

[0196] S202. Obtain the pressure data received by the passenger's legs, the passenger's physical sign data, the first attribute information, and the second attribute information. Among them, the pressure data received by the passenger's legs can be detected by the first pressure detection component. The physical sign data of the passenger can be the leg length data of the passenger; the first attribute information and the second attribute information are respectively the angle information and height information of the fixing plate 2 of the seat assembly 20 relative to the lower surface of the seat body 1.

[0197] S203. After the passenger activates the leg rest adaptive control, determine whether the pressure sensor data is stably exceeded the preset duration. Among them, the pressure sensor data can be the first pressure. Determine whether the first pressure continues to exceed the preset duration. When the duration of the first pressure is less than the preset duration, return to re-detect the duration of the first pressure.

[0198] S204. When the pressure sensor data is stably greater than or equal to the preset duration, calculate the angle and height of the fixing plate 2 relative to the lower surface of the seat body 1 by fitting the leg rest angle adjustment fitting curve according to the detected pressure data and the passenger's physical sign data. Among them, the leg rest angle adjustment fitting curve: angle θ = 20.5 + 0.8x + 0.7h + 0.001x 2 + 0.0005h 2+0.0002xh, where h = l*m, x is the first pressure, l is the leg length, m is an empirical coefficient, 3.5 ≤ m ≤ 4, to calculate the angle; the height f = l*n, where n is an empirical coefficient, 0.2 ≤ n ≤ 0.3; l is the leg length, to calculate the height. It should be noted that after calculating the angle and height of the fixed plate 2 relative to the lower surface of the seat body 1 by fitting the leg rest angle adjustment fitting curve according to the pressure data and the passenger physical sign data, the angle and height of the fixed plate 2 are not immediately adjusted.

[0199] S205. Confirm whether the passenger activates the folding leg rest massage. If not, return to the previous step. If the passenger confirms to activate the leg rest massage, execute the next step.

[0200] S206. Expand the side leg rest massage, and start the airbag massage. It should be noted that the side leg rest massage refers to the second massage structure 5. The expansion of the side leg rest massage is specifically manifested as follows: the first massage member 51 and the second massage member 52 are in the expanded state. At this time, the first massage surface 511 of the first massage member 51 and the second massage surface 521 of the second massage member 52 face each other, and define a space for placing the legs. When the legs are placed in this space, the first massage surface 511 and the second massage surface 521 massage both sides of the legs.

[0201] S207. Determine whether the front row seat is in use. When the front row seat is in use, the front row seat cannot move forward. At this time, the front row seat is in the first position; when the front row seat is not in use, the front row seat can move forward to obtain a larger leg space between the rear row seat and the front row seat. At this time, the front row seat is located in the second position, and the adjustable angle of the fixed plate 2 also increases accordingly.

[0202] S208. When the front row seat is in use, determine whether the legs of the driver and passengers are in the first limit position. It should be noted that the first limit position refers to the position where the legs interfere with the front row seat when the front row seat is in the first position.

[0203] S2081. If it is determined that the legs are in the first limit position, the fixed plate 2 runs to the first limit angle to support the legs. Among them, the first limit angle refers to the angle of the fixed plate 2 relative to the lower surface of the seat body 1 when the fixed plate 2 rotates to support the legs to the first limit position. It should be noted that if it is determined that the position of the legs exceeds the first limit position, the fixed plate 2 stops rotating when it runs to the first limit angle.

[0204] S2082. When it is determined that the legs are not in the first limit position and within the first limit position, adjust the fixed plate 2 to the position that best fits the passenger's body shape. At this time, the first massage structure 3 fits the legs best.

[0205] S209. When the front row seat is not in use, determine whether the legs of the driver and passengers are in the second limit position. It should be noted that the second limit position refers to the position where the legs interfere with the front row seat when the front row seat is in the second position.

[0206] S2091. If it is determined that the legs are in the second limit position, the fixing plate is unfolded to the limit position that conforms to the passenger's body type. At this time, the fixing plate 2 runs to the second limit angle to support the legs. Among them, the second limit angle refers to the angle of the fixing plate 2 relative to the lower surface of the seat body 1 when the fixing plate 2 rotates to support the legs to the second limit position. It should be noted that if it is determined that the position of the legs exceeds the second limit position, the fixing plate 2 stops rotating when it runs to the second limit angle.

[0207] S2092. When it is determined that the legs are not in the second limit position and within the second limit position, adjust the fixing plate to the position that best conforms to the passenger's body type. At this time, the first massage structure 3 fits the legs best.

[0208] In the above solution, the difference between the first limit position and the second limit position lies in whether the front row seat is in use. If the front row seat is in use, the front row seat is located in the first position and cannot be moved, and the first limit position is obtained according to the space between the rear row seat and the front row seat in the first position and the leg length. If the front row seat is not in use, the front row seat is moved forward to the second position, and the second limit position is measured according to the front row seat in the second position, the rear row seat and the leg length.

[0209] It should be noted that the leg length for calculating the first limit position and the second limit position can be a preset leg length rather than the actual leg length of the driver and passengers. The length value of the preset leg length can be greater than the length value of the normal person's leg length, which can improve the fault tolerance rate of leg length recognition, improve the safety of the seat assembly 20, and prevent the fixing plate 2 from squeezing the legs.

[0210] In the description of the embodiments of the present application, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0211] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A seat assembly, characterized in that, Comprising: A seat body (1); A fixing plate (2), which is connected to the seat body (1) and can rotate relative to the seat body (1) to adjust the angle of the fixing plate (2) relative to the lower surface of the seat body (1); A first massage structure (3), which is connected to the fixing plate (2) and is used for massaging the side of the leg facing the fixing plate (2); A detection device, which is used for detecting the physical sign data of the driver and passenger; The seat assembly is configured to: After the driver and passenger sit on the seat body (1), calculate the optimal angle of the fixing plate (2) relative to the lower surface according to the physical sign data of the driver and passenger. When the fixing plate (2) is at the optimal angle, the first massage structure (3) fits best with the leg of the driver and passenger; When the position of the leg meets the adjustment condition of the fixing plate (2), adjust the fixing plate (2) to the optimal angle so that the first massage structure (3) fits best with the leg.

2. The seat assembly according to claim 1, wherein, The physical sign data includes the first pressure of the driver and passenger on the seat and the leg length of the driver and passenger; The calculating the optimal angle of the fixing plate (2) relative to the lower surface according to the physical sign data of the driver and passenger includes: Fitting an angle adjustment curve of the fixing plate (2) according to the first pressure and the leg length, and the angle adjustment curve is used for calculating the optimal angle of the fixing plate (2) under different first pressures and different leg lengths.

3. The seat assembly according to claim 2, characterized in that, The angle adjustment curve is: θ = 20.5 + 0.8x + 0.7h + 0.001x 2 + 0.0005h 2 + 0.0002xh, where h = l * m, x is the first pressure, l is the leg length, and m is an empirical coefficient with 3.5 ≤ m ≤ 4.

4. The seat assembly according to any one of claims 1-3, characterized in that, The seat assembly is further configured to: If the massage function of the seat assembly is turned on, detect whether the leg of the driver and passenger extends to the limit position, where the limit position is the position where the leg extends to interfere with an object on the front side of the seat assembly; If the leg does not extend to the limit position, it means that the position of the leg meets the adjustment condition of the fixing plate (2).

5. The seat assembly according to claim 4, characterized in that, The seat assembly further includes: Calculating the limit angle of the fixing plate (2), where the limit angle is the angle when the fixing plate (2) rotates relative to the lower surface to generate a first preset pressure on the leg when the leg extends to the limit position; If the leg extends to the limit position, control the fixing plate (2) to rotate to the limit angle.

6. The seat assembly according to claim 5, wherein, The calculating the limit angle of the fixing plate (2) includes: Obtaining a preset leg, and the leg length of the preset leg meets the preset leg length; When the preset leg extends to the limit position, when the fixing plate (2) rotates until the first massage structure (3) contacts the preset leg and generates a first preset pressure on the leg, the angle between the fixing plate (2) and the lower surface is the limit angle.

7. The seat assembly according to claim 6, wherein The seat assembly includes a front row seat and a rear row seat, the front row seat is arranged in front of the rear row seat, and the fixing plate (2) is arranged on the rear row seat; The front row seat has a first position and a second position, and the second position is in front of the first position; The limit angle includes a first limit angle, which is the limit angle of the fixing plate (2) when the front row seat is in the first position; The seat assembly is further configured to: When the front row seat is in the first position, determine whether there is a person on the front row seat; If there is a person on the front row seat, determine whether the legs of the occupant on the rear row seat are in the limit position; If the legs of the occupant on the rear row seat are in the limit position, control the fixing plate (2) to rotate to the first limit angle.

8. The seat assembly according to claim 7, characterized in that, The limit angle includes a second limit angle, which is the limit angle of the fixing plate (2) when the front row seat is in the second position; The seat assembly is further configured to: If there is no person on the front row seat, control the front row seat to move to the second position; Determine whether the legs of the occupant on the rear row seat are in the limit position; If the legs of the occupant on the rear row seat are in the limit position, control the fixing plate (2) to rotate to the second limit angle.

9. The seat assembly according to any one of claims 1-2, characterized in that, The fixing plate (2) can move along the height direction of the seat body (1); The seat assembly is further configured to: adjust the height of the fixing plate (2) according to the physical sign data to adjust the fitting position between the first massage structure (3) and the legs.

10. The seat assembly according to claim 9, characterized in that, The relationship between the height f of the fixing plate (2) relative to the lower surface of the seat assembly and the leg length l satisfies: f = l * n, where n is an empirical coefficient and 0.2 ≤ n ≤ 0.

3.

11. The seat assembly according to any one of claims 1-2, characterized in that, The detection device includes a first pressure detection member and a leg length detection member. The first pressure detection member is connected to the seat body (1) and is used to detect the first pressure of the occupant on the seat body (1), and the leg length detection member is used to detect the leg length of the occupant.

12. The seat assembly according to any one of claims 1-2, characterized in that, The first massage structure (3) includes a first massage airbag (31).

13. The seat assembly according to any one of claims 1-2, characterized in that, It further includes a second massage structure (5). The second massage structure (5) is connected to the fixing plate (2) and can be switched between an unfolded state and a retracted state relative to the fixing plate (2); The second massage structure (5) includes a first massage member (51) and a second massage member (52). The first massage member (51) includes a first massage surface (511), and the second massage member (52) includes a second massage surface (521); When the second massage structure (5) is in the unfolded state, the first massage surface (511) and the second massage surface (521) face each other and define a space for placing the legs; when the second massage structure (5) is in the retracted state, both the first massage surface (511) and the second massage surface (521) face away from the fixing plate (2).

14. The seat assembly according to claim 13, wherein, The seat assembly is further configured to: When the occupant sits on the seat body (1) and the massage function of the seat assembly is activated, control the second massage structure (5) to switch to the unfolded state.

15. The seat assembly according to claim 14, wherein Further included is a second pressure detector, which is connected to the second massage structure (5) and is used for detecting a second pressure generated by the first massage member (51) and the second massage member (52) on the leg.

16. The seat assembly according to claim 15, wherein, The first massage member (51) includes a second massage airbag, and the second massage member (52) includes a third massage airbag.

17. The seat assembly according to claim 16, wherein, The seat assembly is further configured to: When the second pressure is greater than a second preset pressure, control the second massage airbag and the third massage airbag to deflate; When the second pressure is less than the second preset pressure, control the second massage airbag and the third massage airbag to inflate.

18. The seat assembly according to claim 16, wherein, The first massage member (51) further includes a first support plate (512), the second massage airbag is connected to the first support plate (512), and when the second massage structure (5) is in the unfolded state, the first massage airbag (31) faces the second massage member (52).

19. The seat assembly according to claim 18, wherein, The inflation thickness d of the second massage airbag in the thickness direction of the first support plate (512) and the second pressure F satisfy: d = -0.00002F 2 -0.003F + 3.

0.

20. The seat assembly according to any one of claims 1-2, characterized in that, The detection device includes a first pressure detector, which is used for detecting a first pressure generated by the driver or passenger on the seat body (1); The seat assembly is further configured to: If the duration of the first pressure exceeds a preset duration, it indicates that the driver or passenger is sitting on the seat body (1).

21. A vehicle, characterized in that, Including the seat assembly (20) according to any one of claims 1-20.

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