Seat display screen, seat, control system and vehicle

Abstract

The invention relates to a seat display screen, a seat, a control system and a vehicle. The seat display screen comprises a display screen; and the driving part is arranged between the seat backrest and the display screen and is used for controlling the position and the posture of the display screen relative to the seat backrest. The driving part comprises a translation driving part for driving the display screen to translate in the left-right direction relative to the seat backrest; the rotation driving part drives the display screen to rotate so that the display screen can be switched between a first posture and a second posture relative to the seat backrest, in the first posture, the display screen is arranged behind the seat backrest in the left-right direction, and in the second posture, the display screen is arranged behind the seat backrest in the left-right direction. The display screen is arranged on the side, facing the inner side of the vehicle, of the seat back in the front-back direction. According to the invention, the technical effects of increasing the entertainment of the back row and ensuring no safety risk are achieved.

Description

Technical Field

[0001] The present disclosure relates to a seat display screen, a seat, a control system and a vehicle, belonging to the technical field of vehicles. Background Art

[0002] In the current development trend of automotive technology, the intelligent cockpit of vehicles is continuously innovating, and consumers' demand for in-vehicle entertainment functions is showing a significant growth trend. Against this background, a large number of mass-produced vehicle models have been equipped with display devices for rear-row passengers to meet the entertainment needs of customers. In order to achieve a good viewing and interaction experience for rear-row passengers, the display device is generally installed in the rear area of the front seat headrest. The screen of this display device generally uses glass material, and its shell mostly selects hard plastic or metal material.

[0003] In the prior art, for setting a display screen behind the front seat headrest, although it enriches the in-vehicle entertainment experience of rear-row passengers to a certain extent, the display screen also poses potential safety hazards. When a vehicle collision accident or emergency braking occurs, rear-row passengers will rush forward due to inertia, and are very likely to collide with the display screen set behind the front seat headrest, thus causing personal injuries. Especially when the vehicle is traveling at a high speed, or when the rear-row passengers do not wear seat belts correctly, the degree of injury caused by this collision will be more serious. In addition, since the display screen is a protruding component, and the screen glass material is fragile, it further increases the risk of injury to rear-row passengers. Summary of the Invention

[0004] In order to solve the technical problems in the existing intelligent vehicle cockpits, the present disclosure proposes a seat display screen, a seat, a control system and a vehicle with an active anti-collision function, which can actively identify and judge the possibility of collision between rear-row passengers and the front seat display screen, and can automatically adjust the position of the display screen in advance, so as to avoid the area where it collides with the passengers, prevent the situation of passengers being injured by colliding with the display screen, improve the safety of the passengers, ensure no safety risks while increasing the rear-row entertainment, and has a simple structure, relatively low cost, and is easy to be implemented in mass-produced vehicle models.

[0005] Specifically, a first aspect of the present disclosure provides a seat display screen for installation at the rear of a vehicle, including: a display screen; and a driving part disposed between the seat and the display screen for controlling the position and posture of the display screen relative to the seat backrest. Wherein, the driving part includes: a translation driving part for driving the display screen to translate relative to the seat in the left-right direction; and a rotation driving part for driving the display screen to rotate so as to switch the display screen between a first posture and a second posture relative to the seat. In the first posture, the display screen is arranged along the left-right direction behind the seat backrest. In the second posture, the display screen is arranged along the front-rear direction on the side of the seat backrest facing the inside of the vehicle.

[0006] According to the seat display screen with the above structure, even in an emergency situation where a collision may occur, by using the driving part to perform translation and rotation actions on the display screen, it is possible to timely change the position and posture of the display screen without damaging the display screen, so that it is away from the forward impact path of the rear-row occupants under the action of inertia, greatly reducing the probability of collision between the rear-row occupants and the display screen, and thus effectively reducing the personal injury caused by the collision, providing a strong guarantee for the safety of the rear-row occupants. Moreover, after the collision situation is lifted, the driving part can also be used to return the display screen to the initial position for the occupants to continue using, meeting the entertainment needs while ensuring safety, and taking into account both safety and entertainment.

[0007] In addition, due to the driving part capable of performing translation and rotation actions on the display screen, the driving part can also be actively activated by the occupants, so that the display screen can be placed in a desired position and posture according to the personalized selection of the occupants, improving the freedom of choice of the users.

[0008] Preferably, in the seat display screen of the above first aspect, the translation driving part of the driving part includes: a seat-side guiding part embedded and fixed on the rear surface of the seat backrest and extending along the left-right direction; a seat-side supporting part, one end of which has a seat-side guiding and mating part assembled on the seat-side guiding part to move along the seat-side guiding part; and a display-screen-side supporting part, one end of which is connected to the display screen, and the other end of which is connected to the other end of the seat-side supporting part, so that the display-screen-side supporting part can rotate around the other end of the seat-side supporting part, thereby switching the display screen between the first posture and the second posture.

[0009] According to the seat display screen with the above structure, a two-stage support part is provided between the display screen and the seat, namely the seat-side support part and the display-screen-side support part. Through this two-stage support part, a composite movement of translation and rotation can be achieved in cooperation with a simple structure without the need to set up complex designs such as universal joints. Moreover, the seat-side support part and the display-screen-side support part can be independently manufactured, assembled, and maintained. If the rotation mechanism is damaged, only the display-screen-side support part needs to be replaced without disassembling the entire support system.

[0010] The seat-side guiding part is embedded and fixed on the rear surface of the seat and extends in the left-right direction, providing a stable guiding track for the seat-side support part. Since the seat-side guiding part serving as the guiding track is embedded in the rear surface of the seat, it will not become a protruding object that may collide with the occupant. The seat-side support part is matched with the seat-side guiding part through the seat-side guiding matching part and can move smoothly in the left-right direction, thereby realizing precise translation control of the display screen, ensuring accurate adjustment of the position of the display screen, and achieving precise and reliable translation protection. One end of the display-screen-side support part is connected to the display screen, and the other end is connected to the other end of the seat-side support part and can rotate around it, enabling smooth switching of the posture of the display screen.

[0011] Preferably, in the seat display screen of the above first aspect, the seat-side guiding part is configured as a first guiding chute, at least one of the two inner surfaces of the first guiding chute that face each other in the up-down direction is formed in a rack shape with a rack, the seat-side guiding matching part provided at one end of the seat-side support part is configured as a first gear, the first gear can be meshed with the rack of the first guiding chute, the seat-side support part includes a first motor, the rotating shaft of the first motor is coaxially connected to the first gear to drive the first gear to rotate, and the length of the first guiding chute is configured to be more than half of the width of the rear surface of the seat backrest, and one end of the first guiding chute is arranged at a position corresponding to one of the two end parts in the left-right direction of the rear surface that faces the inner side of the vehicle.

[0012] According to the seat display screen with the above structure, through the meshing of the first gear and the rack-shaped first guiding chute and the drive of the first motor, the rotational movement of the motor can be accurately converted into the linear translation of the seat-side support part along the first guiding chute. Moreover, through the meshing between the gear and the rack, reliable positioning can be achieved while realizing the translation movement, avoiding slipping, and improving the stability of the display screen during translation and the positioning accuracy during normal use. By configuring the length of the first guiding chute as above, the movement range and path of the display screen can be optimized, so that the display screen can first translate to the end part on the inner side of the vehicle in the rear of the seat and then be adjusted to the side by rotation, avoiding interference with the seat backrest during rotation.

[0013] Preferably, in the seat display screen of the first aspect described above, the translation driving part of the driving part further includes a display screen side guiding part, which is fixed to the back of the display screen and extends along the left-right direction. Wherein, one end of the display screen side supporting part is provided with a display screen side guiding and cooperating part, which is assembled to the display screen side guiding part to move along the display screen side guiding part.

[0014] According to the seat display screen with the above structure, in addition to the seat side guiding part, a display screen side guiding part is also provided on the display screen side, so that the display screen side guiding part and the seat side guiding part can work together. While performing a translation movement along the seat side guiding part, the display screen itself can also perform a translation movement along the display screen side guiding part. Through the combined movement of these two translation movements, the movement range of the display screen can be further significantly increased, a larger avoidance area can be covered, and the precise control of the position of the display screen can be optimized. Moreover, it can further ensure that the display screen can complete the action more smoothly during the attitude switching process, and ensure that in an emergency, the display screen can quickly and stably switch to the protection attitude to provide timely and effective protection for the rear row passengers.

[0015] Preferably, in the seat display screen of the first aspect described above, the display screen side guiding part is configured as a second guiding chute, and at least one of the two inner surfaces of the second guiding chute facing each other in the up-down direction is formed in a rack shape with a rack. The display screen side guiding and cooperating part provided at one end of the display screen side supporting part is configured as a second gear, and the second gear can mesh with the rack of the second guiding chute. The display screen side supporting part includes a second motor, and the rotating shaft of the second motor is coaxially connected to the second gear to drive the second gear to rotate. And the length of the second guiding chute is configured to be more than half of the width of the back surface of the display screen, and one end of the second guiding chute is arranged at a position corresponding to one of the two end parts of the back surface in the left-right direction facing the outside of the vehicle.

[0016] According to the seat display screen with the above structure, through the meshing of the second gear and the rack-shaped second guiding chute, combined with the drive of the second motor, the rotational movement of the motor can be accurately converted into a linear translation of the seat side supporting part along the first guiding chute. Moreover, through the meshing between the gear and the rack, reliable positioning can be achieved while realizing the translation movement, avoiding slipping, and improving the stability of the display screen during translation and the positioning accuracy during normal use. By configuring the length of the second guiding chute as above, the movement range and path of the display screen can be optimized, so that the display screen can first translate inward to the end part of the vehicle inside behind the seat, and then be adjusted to the side by rotation, avoiding interference with the seat back during rotation.

[0017] Preferably, in the seat display screen of the first aspect described above, the first motor and the second motor are controlled to rotate in opposite directions, so that while the display screen moves in the first direction relative to the display screen side support portion, the display screen also moves in the first direction following the translation of the seat side support portion along the seat side guide portion. The first direction is the direction towards one side in the left-right direction.

[0018] According to the seat display screen with the above structure, when the vehicle faces risks such as collision, the display screen can move away from the rear occupants in two dimensions simultaneously. For example, when a vehicle collides, the rear occupants rush forward due to inertia. On the one hand, the display screen translates towards the inner side of the vehicle along with the seat side support portion, and on the other hand, it moves away from the occupants relative to the display screen side support portion. Thus, the safety distance between the display screen and the rear occupants is greatly enlarged. The two motors cooperate to accelerate, enabling the display screen to move to a safe position at a higher speed, minimizing the overlapping area between the display screen and the heads of the rear occupants, significantly enhancing the protection effect, and effectively reducing the possibility of collision injuries. Moreover, by adjusting the rotational speed difference between the two motors, the net displacement and path of the display screen can be flexibly controlled to adapt to different emergency scenario requirements. For example, when the two motors rotate in opposite directions at a lower speed, the display screen moves slowly for daily viewing angle fine-tuning. When the two motors rotate in opposite directions at the maximum speed, the display screen moves rapidly to a preset safe position for emergency avoidance.

[0019] Preferably, in the seat display screen of the first aspect described above, one of the other ends of the seat side support portion and the other end of the display screen side support portion is a pair of connecting pieces that are oppositely arranged at intervals in the up-down direction. The other of the other ends of the seat side support portion and the other end of the display screen side support portion is assembled between the pair of connecting pieces and is connected to each other by a connecting shaft extending in the up-down direction. The connecting shaft is the rotation axis for the display screen side support portion to rotate around the seat side support portion, and the connecting shaft is integrally formed or integrally fixed with the other end of the display screen side support portion. A third motor is provided on the connecting shaft such that the connecting shaft is coaxially connected to the rotation shaft of the third motor. The connecting shaft provided with the third motor is configured as the rotation driving portion.

[0020] According to the seat display screen with the above structure, by connecting the seat side support part and the display screen side support part in the form of a pair of connecting pieces and a connecting shaft, a double-point clamping structure is formed, which evenly distributes the load during the rotation process, avoiding stress concentration or eccentric load deformation. The connecting shaft is integrally formed with the other end of the display screen side support part, enhancing the integrity and reliability of the structure. Compared with the method of assembling multiple parts, the one-piece molding reduces the connection gaps and the possibility of loosening between parts, improving the durability and stability of the rotating structure, and ensuring that the structure will not be damaged or fail during long-term use and frequent rotation operations. The connecting shaft is coaxially connected to the rotating shaft of the third motor, enabling the third motor to directly drive the display screen side support part to rotate around the rotating shaft, reducing the transmission link, improving the control accuracy and response speed, and being able to accurately control the rotation angle and speed of the display screen through targeted control, ensuring that the display screen can accurately switch to the required posture, providing more reliable protection for the rear passengers. By using the connecting shaft as the rotating shaft, the rotation drive mechanism is made more compact, and the display screen side support part can stably rotate around the seat side support part, ensuring the smoothness of the rotation action. In the event of an emergency such as a vehicle collision, the display screen can be quickly switched from the first posture to the second posture, enabling the display screen to timely avoid the possible collision path of the rear passengers, effectively reducing the risk of collision damage.

[0021] The second aspect of the present disclosure provides a seat, which includes the seat display screen described in the first aspect.

[0022] The third aspect of the present disclosure provides a control system for a seat display screen, including: the seat of the second aspect; an occupant monitoring unit that monitors the relative displacement of the occupant behind the seat relative to the seat display screen; a calculation unit that calculates collision information of the occupant relative to the seat display screen based on the relative displacement monitored by the occupant monitoring unit, and a control unit that, based on the collision information calculated by the calculation unit, controls the activation of the drive unit of the seat display screen, causing the display screen to move and rotate from the first posture to the second posture; or, based on an input instruction of the occupant, controls the activation of the drive unit of the seat display screen, causing the display screen to move and / or rotate based on the input instruction.

[0023] The fourth aspect of the present disclosure provides a vehicle, which is provided with the control system for the seat display screen described in the third aspect.

[0024] The second to fourth aspects of the present disclosure adopt the seat display screen of the first aspect. Therefore, the same various technical effects as those of the first aspect above can also be achieved, which will not be elaborated here.

[0025] Next, the technical solutions of the present disclosure will be described in more detail with reference to the accompanying drawings. Description of the Drawings

[0026] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation of the present invention. Among them:

[0027] Figure 1 is a schematic perspective view showing a seat display screen according to a first embodiment of the present disclosure;

[0028] Figure 2 is a schematic perspective view showing the seat display screen according to the first embodiment of the present disclosure from another angle;

[0029] Figure 3 is a schematic side perspective view showing the seat display screen according to the first embodiment of the present disclosure;

[0030] Figure 4 is a schematic rear view showing the seat display screen according to the first embodiment of the present disclosure;

[0031] Figure 5 is a schematic top view showing the seat display screen according to the first embodiment of the present disclosure;

[0032] Figure 6 is a sectional view taken along line AA showing the seat display screen according to the first embodiment of the present disclosure;

[0033] Figure 7 is a sectional view taken along line BB showing the seat display screen according to the first embodiment of the present disclosure;

[0034] Figure 8 is a sectional view taken along line CC showing the seat display screen according to the first embodiment of the present disclosure;

[0035] Figure 9 is an enlarged schematic view of part a of the seat display screen according to the first embodiment of the present disclosure;

[0036] Figure 10 is an enlarged schematic view of part b of the seat display screen according to the first embodiment of the present disclosure;

[0037] Figure 11 is an enlarged schematic view of part c of the seat display screen according to the first embodiment of the present disclosure;

[0038] Figure 12A is a top view schematic showing the first posture of the seat display screen according to the first embodiment of the present disclosure;

[0039] Figure 12B is a top view schematic showing the seat display screen during the transition from the first posture to the second posture according to the first embodiment of the present disclosure;

[0040] Figure 12CIt is a top-down schematic view showing the second posture of the seat display screen according to the first embodiment of the present disclosure;

[0041] Figure 13 It is a schematic flowchart showing the control system of the seat display screen according to the second embodiment of the present disclosure;

[0042] Figure 14 is Figure 13 The schematic flowchart of Scenario 2 in

[0043] List of reference numerals

[0044] 10 Seat back

[0045] 11 Seat headrest

[0046] 12 Groove

[0047] 100 Display screen

[0048] 200 Driving part

[0049] 210 Translation driving part

[0050] 211 First guiding chute (seat side guiding part)

[0051] 212 Rack

[0052] 221 Seat side supporting part

[0053] 221A One end

[0054] 221B The other end

[0055] 222 First gear (seat side guiding and mating part)

[0056] 223 First motor

[0057] 231 Display screen side supporting part

[0058] 231A One end

[0059] 231B The other end

[0060] 232 Second gear (display screen side guiding and mating part)

[0061] 233 Second motor

[0062] 234 Connecting piece

[0063] 241 Second guiding chute (display screen side guiding part)

[0064] 242 Rack

[0065] 260 Rotation driving part

[0066] 261 Connecting shaft

[0067] 262 Third motor

[0068] 300 Sensor

[0069] 400 Switch Detailed implementation manners

[0070] Hereinafter, the technical solutions of the present invention will be more clearly described by referring to the drawings to describe the specific implementation manners of the present invention.

[0071] It should be noted that the drawings of the present invention are merely schematic diagrams simply shown for clearly showing the parts related to the solutions of the present invention, and do not show some non-essential parts that may exist. Therefore, these drawings should not be construed as limiting the present invention, and they may be different from the actual structure during use. In addition, it should also be understood that the terms indicating orientation or position such as "upper", "lower", "left", "right", "front", "rear", etc. that may appear in the following description are for the purpose of convenience of description and are not restrictive. In the embodiments of the present disclosure, for the description of orientation or position, the normal orientation of the vehicle is used for description, that is, the longitudinal direction of the vehicle is the front-rear direction, where the direction the driver faces is the front side, and the opposite side of the front side is the rear side; the height direction of the vehicle is the up-down direction, the side close to the ground is the lower side, and the opposite side of the lower side is the upper side; the left-right direction of the vehicle is also the left-right direction and the inside-outside direction, where the side facing the inside of the vehicle is the inner side and the side facing the outside of the vehicle is the outer side. For example, for the left seat (the left side here is the left side of the seat in the normal case when the seat faces the front side), the left side of the seat is the outer side and the right side is the inner side, and for the right seat, the right side of the seat is the outer side and the left side is the inner side. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted below.

[0072] If there is no special description, all the implementation manners and optional implementation manners of the present invention can be combined with each other to form new technical solutions.

[0073] If there is no special description, all the technical features and optional technical features of the present invention can be combined with each other to form new technical solutions.

[0074] <First Embodiment>

[0075] As Figure 1 and Figure 2 shown, a display screen 100 is installed at the rear side of the seat backrest 10 of the vehicle. Since the display screen 100 is installed at a position close to the headrest 11, its height is basically at the position of the seat headrest and is approximately parallel to the line of sight of the rear row occupants, so it is sometimes also called a headrest display screen. The display screen 100 can interact with the user to play the content that the user hopes to see.

[0076] The display screen 100 is similar to a portable tablet computer. The device itself and the screen have a certain hardness, and most of the screens are made of fragile materials. Therefore, when the occupant behind the display screen 100 has a sudden forward movement tendency due to rear collisions or other reasons, the occupant 100, especially the head, may collide hard with the display screen 100 as a protrusion, causing harm to the occupant. At this time, if the screen is broken due to the collision, the fragments are very likely to further scratch the occupant, thus aggravating the harm to the occupant.

[0077] The seat display screen provided by the embodiments of the present disclosure can solve the above problems and improve the safety of the occupant, enabling the occupant to enjoy the entertainment brought by the display screen 100 without worrying about the safety of the display screen 100.

[0078] As Figures 1-4 shown, in the seat display screen of the first embodiment of the present disclosure, a driving part 200 is provided between the seat backrest 10 and the display screen 100. By using the driving part 200, the position and posture of the display screen 100 relative to the seat backrest 10 can be controlled.

[0079] The activation of the driving part 200 can be automatically triggered by the vehicle control unit (such as the in-vehicle ECU) by monitoring events, or can be manually triggered by the occupant by manually turning on a switch such as the switch 400.

[0080] As Figures 1-11 shown, the driving part 200 of the seat display screen of the first embodiment includes a translation driving part 210 and a rotation driving part 260. The translation driving part 210 drives the display screen 100 to translate relative to the seat backrest 10 in the left-right direction. Therefore, by the translation driving part 210, the position of the display screen 100 in the left-right direction can be changed. The rotation driving part 260 drives the display screen 100 to rotate so that the display screen 100 can be switched between a first posture (for example, see Figure 12A ) and a second posture (for example, see Figure 12C ). In the first posture, the display screen 100 is arranged along the left-right direction behind the seat backrest 10 as Figure 12A shown. In the second posture, the display screen 100 is arranged along the front-rear direction on the side of the seat backrest 10 facing the inside of the vehicle as Figure 12C shown.

[0081] In the seat display screen of this embodiment, even in an emergency situation where a collision may occur, by using the driving unit 200 to perform translation and rotation actions on the display screen 100, it is possible to timely change the position and attitude of the display screen 100 without damaging the display screen 100, so that it moves away from the forward impact path of the rear-row occupants under the action of inertia, greatly reducing the probability of collision between the rear-row occupants and the display screen, thereby effectively reducing the personal injuries caused by the collision, providing a strong guarantee for the safety of the rear-row occupants. Moreover, after the collision situation is resolved, the driving unit 200 can also be used to return the display screen 100 to its initial position for the occupants to continue using, meeting the entertainment needs while ensuring safety, taking into account both safety and entertainment.

[0082] In addition, by actively activating the operation of the driving unit 200 by the occupant operating the switch 400, translation and rotation actions can be specifically performed on the display screen 100. For example, the user can fine-tune the position of the display screen 100 by translating the display screen 100, and can fine-tune the attitude of the display screen 100 by rotating the display screen 100, so that the display screen 100 can be placed in a desired position and attitude according to the personalized selection of the occupants, improving the user's degree of freedom of choice. That is, in addition to the basic protection function, the seat display screen of this embodiment also additionally provides an additional function of personalized adjustment for the display screen 100.

[0083] Next, the structures of the translation driving unit 210 and the rotation driving unit 260 of the driving unit 200 of this embodiment will be described in detail with reference to the drawings.

[0084] As Figures 6-11 shown, the translation driving unit 210 of the driving unit 200 of the seat display screen of this embodiment may include: a seat-side guiding portion 211, which is embedded and fixed on the rear surface of the seat backrest 10 and extends along the left-right direction; a seat-side supporting portion 221, one end 221A of which has a seat-side guiding and mating portion 222, and the seat-side guiding and mating portion 222 is assembled to the seat-side guiding portion 211 to move along the seat-side guiding portion 211; a display-screen-side supporting portion 231, one end 231A of which is connected to the display screen 100, and the other end 231B of which is connected to the other end 221B of the seat-side supporting portion 221, so that the display-screen-side supporting portion 231 can rotate around the other end 221B of the seat-side supporting portion 221, thereby driving the display screen 100 to switch between a first attitude and a second attitude.

[0085] In this embodiment, for the seat-side guiding portion 211, as Figure 2 、 Figure 6 、 Figures 9-10As shown in the figure, it is configured as the first guiding chute 211. A groove 12 extending in the left-right direction and recessed may be formed on the back surface of the seat back 10. The first guiding chute 211 is configured to have an outer dimension corresponding to the groove 12 and is inserted and fitted into the groove 12 so that the first guiding chute 211 does not protrude from the back surface of the seat back 10. The installation and fixation of the first guiding chute 211 to the groove 12 may adopt conventional fixing methods, such as clamping, bonding, press fitting, etc., which are not limited herein as long as fixation can be achieved.

[0086] As shown in the figure, two inner surfaces of the first guiding chute 211 facing each other in the up-down direction are formed in a rack shape each having a rack 212, and a plurality of rack teeth arranged side by side in the left-right direction are arranged on each rack 212. Correspondingly, the seat-side guiding and mating portion 222 provided at one end 221A of the strut-shaped seat-side support portion 221 is configured as a first gear 222, and the first gear 222 can mesh with the rack 212 of the first guiding chute 211 to achieve a rack and pinion drive. The seat-side support portion 221 further includes a first motor 223, and a rotating shaft of the first motor 223 is coaxially connected to the first gear 222. Therefore, by the forward and reverse rotation of the first motor 222, the first gear 222 can be driven to rotate correspondingly, so as to translate along the first guiding chute 211.

[0087] It can be seen that in the translation drive portion 210 of the drive portion 200 in this embodiment, through the meshing of the first gear 222 with the rack 212 of the rack-shaped first guiding chute 211 and combined with the drive of the first motor 223, the rotational motion of the first motor 223 can be accurately converted into a linear translation of the seat-side support portion 221 along the first guiding chute 211. Moreover, through the meshing between the gear and the rack, reliable positioning can be achieved while realizing the translation motion, slipping can be avoided, and the stability during the translation of the display screen 100 and the positioning accuracy during normal use are improved.

[0088] In this embodiment, as Figure 6 shown, the length of the first guiding chute 211 may be configured to be approximately half of the width of the rear surface of the seat back, and one end of the first guiding chute 211 ( Figure 6 the right end in the figure) is provided at a position corresponding to one end facing the vehicle interior among the two ends of the rear surface of the seat back 10 in the left-right direction. Of course, Figure 6The length configuration of the first guiding chute 211 shown is merely an example. The first guiding chute 211 can also extend to the left to cover a longer range. That is to say, the length of the first guiding chute 211 is configured to be greater than approximately half of the width of the rear surface of the seat back 10. By configuring the length of the first guiding chute 211 as described above, the movement range and path of the display screen 100 can be optimized, enabling the display screen 100 to first translate inward toward the vehicle inside at the rear of the seat to the end, and then be adjusted to the side by rotation, avoiding interference with the seat back during rotation.

[0089] Next, the rotational drive unit 260 of the drive unit 200 of this embodiment will be described. In this embodiment, the rotational drive unit 260 is mainly constructed by a connecting shaft 261 extending vertically and a third motor 262 provided on the connecting shaft 261 to drive the rotation of the connecting shaft 261. As Figures 10-11 shown, etc., the rod-shaped seat-side support portion 211 and the display-screen-side support portion 231 that construct the translational drive unit 210 of this embodiment are connected to each other by the connecting shaft 261 and can rotate relative to each other with the connecting shaft 261 as the rotation axis. As shown in the figure, the other end 231B of the display-screen-side support portion 231 is configured as a pair of connecting pieces 234 that are arranged at intervals in the vertical direction and each extend forward. The other end 221B of the seat-side support portion 221 is assembled between the pair of connecting pieces 234, and the other end 221B of the seat-side support portion 221 and the pair of connecting pieces 234 that are assembled to each other are connected together by the connecting shaft 261 extending in the vertical direction. The connecting shaft 261 and the pair of connecting pieces 234 are integral. Therefore, when the connecting shaft 261 rotates, the seat-side support portion 221 that is integral with the connecting shaft 261 via the connecting piece 234 rotates synchronously. The rotating shaft of the third motor 262 provided on the connecting shaft 261 is fixedly connected coaxially with the connecting shaft 261. Therefore, by the forward and reverse rotation of the rotating shaft of the third motor 262, the connecting shaft 261 can be driven to rotate forward and reverse accordingly. In addition, in order to avoid interference between the other end 221B of the seat-side support portion 221 and the connecting shaft 261 and the third motor 262, an avoidance portion can be provided on the other end 221B of the seat-side support portion 221. It should be noted that although in this embodiment, a pair of connecting pieces are formed on the other end 231B of the display-screen-side support portion 231, this is not restrictive. For example, a pair of connecting pieces can be formed on the other end 221B of the seat-side support portion 221. That is to say, one of the other end 221B of the seat-side support portion 221 and the other end 231B of the display-screen-side support portion 231 forms a pair of connecting pieces, and the other of the other end 221B of the seat-side support portion 221 and the other end 231B of the display-screen-side support portion 231 can be assembled between the pair of connecting pieces.

[0090] As described above, the basic configuration of the seat display screen according to the embodiments of the present disclosure has been described. By using the driving part 200 provided between the seat backrest 10 and the display screen 100, when the triggering condition is met (which will be described in detail later), the first gear 222 can be driven to rotate, so as to drive the display screen 100 to translate along the first guiding chute 211 towards the inner end of the seat backrest facing the seat through the seat side support part 221 and the display screen side support part 231. Moreover, the connecting shaft 261 can be further driven to rotate, so as to drive the display screen 100 to rotate around the seat side support part 221 through the display screen side support part 231, from the position behind the seat to the position beside the seat. Therefore, the seat display screen according to the embodiments of the present disclosure can avoid the forward tilting path of the occupant, will not harm the occupant, and the display screen itself will not be damaged due to collision. When in use, the display screen can be driven back to the use position.

[0091] It should be noted that, in this embodiment, although the above structure can already achieve the function of the seat display screen, however, through the following further configurations, the effect of this embodiment will be further improved.

[0092] Specifically, for example, referring to Figures 1-11 , in this embodiment, in addition to the first guiding chute 211 on the seat side, a display screen side guiding part 241 is also provided on the display screen 100 side of the translation driving part 210 of the driving part 200. The display screen side guiding part 241 is configured as a second guiding chute 241 fixed on the back surface of the display screen 100 in this embodiment. As shown in the figure, the second guiding chute 241 can be a block extending along the left-right direction and has a recessed groove. Similar to one end 221A of the seat side support part 221, at this time, one end 231A of the display screen side support part 231 is provided with a display screen side guiding and cooperating part 241, and the display screen side guiding and cooperating part 241 is assembled to the display screen side guiding part 241 to move along the display screen side guiding part 241.

[0093] Similar to the seat side, each of the two inner surfaces of the second guiding chute 241, which is the display screen side guiding part, facing each other in the up-down direction is formed in a rack shape with racks 242, and the display screen side guiding and cooperating part provided at one end 231A of the display screen side support part 231 is configured as a second gear 232, and the second gear 232 can be engaged with the racks 242 of the second guiding chute 241 to achieve gear-rack transmission. The display screen side support part 231 includes a second motor 233, and the rotating shaft of the second motor 233 is coaxially connected to the second gear 232. Therefore, by the forward and reverse rotation of the second motor 232, the second gear 232 can be driven to rotate correspondingly, so as to translate along the second guiding chute 241.

[0094] Since in addition to the first guiding chute 211 serving as the seat-side guiding part, a second guiding chute 241 serving as the display-screen-side guiding part is also provided on the display-screen 100 side, the second guiding chute 241 and the first guiding chute 211 can work together. While the display screen 100 performs a translational movement along the first guiding chute 211 on the seat side, the display screen 100 itself can also perform a translational movement along the second guiding chute 241. Through the combined movement of these two translational movements, the movement range of the display screen 100 can be further significantly increased, a larger avoidance area can be covered, and the precise control of the position of the display screen can be optimized. Moreover, it can further enable the display screen to complete the actions more smoothly during the attitude switching process, ensure that in an emergency, the display screen can quickly and stably switch to the protection attitude, and provide timely and effective protection for the rear-row passengers.

[0095] In this embodiment, as Figure 7 shown, the length of the second guiding chute 241 can be configured to be approximately half of the width of the back surface of the display screen 100, and one end of the second guiding chute 241 is provided at a position corresponding to one of the two end portions in the left-right direction of the back surface facing the outside of the vehicle ( Figure 7 the right side in Figure 7 ). Of course, the length configuration of the second guiding chute 241 shown is only an example, and the second guiding chute 241 can also extend to the left to cover a longer range. That is to say, the length of the second guiding chute 241 is configured to be approximately more than half of the width of the back surface of the display screen 100. By configuring the length of the second guiding chute 241 as above, the movement range and path of the display screen can be optimized, so that the display screen can first translate inward from the rear of the seat to the end portion, and then be adjusted to the side by rotation, avoiding interference with the seat back during rotation.

[0096] In the case of including the second guiding chute 241, the first motor 223 and the second motor 233 are controlled to rotate in opposite directions, so that while the display screen 100 moves relative to the display-screen-side support portion 231 toward the first direction which is one direction in the left-right direction, the display-screen-side support portion 231 also follows the seat-side support portion 221 and moves toward the first direction.

[0097] Therefore, when the vehicle faces risks such as collision, the display screen 100 can move away from the rear occupants in two dimensions simultaneously. For example, when a vehicle collision occurs and the rear occupants rush forward due to inertia, on the one hand, the display screen 100 translates inward along with the seat side support part 221 (one of the cases in the first direction), and on the other hand, it also moves inward away from the occupants relative to the display screen side support part 231. Thus, the safety distance between the display screen 100 and the rear occupants is greatly expanded. The dual motors cooperate to accelerate, enabling the display screen to move to a safe position at a higher speed, minimizing the overlapping area between the display screen and the heads of the rear occupants, significantly enhancing the protection effect, and effectively reducing the possibility of collision injuries. Moreover, by adjusting the rotational speed difference between the two motors, the net displacement and path of the display screen can be flexibly controlled to meet the requirements of different emergency scenarios. For example, when the two motors rotate in the opposite direction at a lower speed, the display screen moves slowly for daily viewing angle fine-tuning. When the two motors rotate in the opposite direction at the maximum speed, the display screen moves rapidly to a preset safe position for emergency avoidance.

[0098] As Figures 1-2 , Figure 4 shown, etc., a sensor 300 is also provided on the front surface of the display screen. In this embodiment, the sensor 300 is configured as a millimeter-wave radar, for example, which can monitor whether there are occupants in the rear row and the real-time movement state of the rear occupants. Specifically, the sensor 300 can collect the relative position relationship information between the rear occupants and the headrest display area at the rear of the front seat, and transmit this information to the in-vehicle ECU in real time. Special data analysis algorithms and logical judgment programs are preset inside the in-vehicle ECU. After receiving the information transmitted by the sensor 300, the in-vehicle ECU will, according to the established algorithms, perform multi-dimensional analysis and processing on the information, including comprehensive consideration of factors such as the position change trend, movement speed, and acceleration of the rear occupants, and then accurately judge the possibility of collision between the rear occupants and the rear of the front seat. The sensor 300 is preferably arranged at the central position on the upper side of the display screen 100 as shown in the figure, so as to be within the range of the occupants' heads. In addition, on the outer surface of the display screen guiding part 241 of the display screen 100, for example, at the end of the upper surface in the figure, a physical switch 400 is also provided, and the occupants can operate this switch 400 to control the action of the driving part 200.

[0099] The position of the switch 400 is not limited to that shown in the figure and can be set at other appropriate positions. Moreover, the switch 400 is not limited to a physical switch and can also be a virtual switch that can be displayed on the screen of the display screen 100, and the operation of the drive unit 200 is controlled through interactions such as touch by the occupant. In addition, the control of the operation of the drive unit 200 by the switch not only includes continuously performing translation and rotation when operated to realize the switching from the first posture to the second posture or from the second posture to the first posture, but also includes fine-tuning the control of the translation direction, the translation amount, the rotation direction of the rotation, and the rotation amount of the rotation separately.

[0100] <Second Embodiment>

[0101] The second embodiment of the present disclosure relates to a control system for a seat display screen, which is used to control the seat display screen having the first embodiment, and includes: an occupant monitoring unit that monitors the relative displacement of the occupant behind the seat relative to the seat display screen; a calculation unit that calculates the collision information of the occupant relative to the seat display screen based on the relative displacement monitored by the occupant monitoring unit, and a control unit that, based on the collision information calculated by the calculation unit, controls the activation of the drive unit of the seat display screen so that the display screen moves and rotates from the first posture to the second posture; or, based on the input instruction of the occupant, controls the activation of the drive unit of the seat display screen so that the display screen moves and / or rotates based on the input instruction.

[0102] The above-mentioned occupant monitoring unit can be composed of the sensor 300 in the first embodiment, and the above-mentioned calculation unit and control unit can be composed of an in-vehicle ECU. The collision information calculated by the calculation unit can be information related to the activation conditions in the automatic activation (scenario two described later). The input instruction of the occupant can be completed via the switch 400 in the first embodiment or via a virtual switch on the display screen.

[0103] For example, when the vehicle is in emergency braking or a collision, the rear-row occupant will suddenly move forward under the action of inertia. If the head movement trajectory overlaps with the space generated by the display screen 100, there is a risk of collision, and the occupant's head may be injured. In this scenario, through the control system of this embodiment, it is possible to use the sensor 300 provided on the upper part of the front of the display screen to continuously monitor the relative displacement of the rear-row occupant relative to the display screen, and immediately transmit the collected information to the in-vehicle ECU for analysis and calculation, and based on the calculation result, determine whether to activate the drive unit of the in-vehicle display screen to activate the in-vehicle display screen to operate.

[0104] In this embodiment, the conditions for the in-vehicle ECU to determine activation are as follows: there is an occupant in the area corresponding to the display screen in the rear row, and this step can be completed by a camera in the vehicle or the camera of the display screen; and, based on the displacement of the occupant's head relative to the display screen, it is determined whether the head will collide with the display screen in a short period of time. In this embodiment, the main basis for the control system to determine a collision is the relative displacement between the head of the rear-row occupant and the display screen, that is, the monitoring data of the sensor 300. Through the change of the relative displacement, the ECU calculates the acceleration of the occupant's head relative to the display screen. The acceleration contains direction and numerical information, and then the ECU filters out only the acceleration information approximately perpendicular to the display screen. At the same time, based on the accumulated database, an acceleration threshold for the forward movement of the occupant's head when a collision may occur is set. Accordingly, only when it is simultaneously detected that there is acceleration information of the occupant's head relatively perpendicular to the display screen and the acceleration value is greater than or equal to the set threshold, it is determined that the condition for the in-vehicle display screen to operate is met.

[0105] On the other hand, in the embodiment, in addition to the above-mentioned active determination and activation by the in-vehicle ECU, it can also be manually activated through the input instruction of the occupant, such as the operation of a switch. For example, when the occupant does not need to use the in-vehicle display screen, the switch 400 on the seat display screen can be pressed. At this time, the display screen can change from Figure 12A the normal state shown to Figure 12C the storage state shown. When the occupant presses the switch 400 in this storage state, the display screen can return from the storage state shown in 12C to Figure 12A the normal state shown again. In addition, different from the above continuous transformation, the display screen can also be controlled to translate and rotate to a certain extent according to the operation state of the switch by operating the switch. For example, when the switch is pressed, the driving part is turned on, and when the switch is released, the driving part is turned off. At this time, the position and posture can be finely adjusted by the duration of pressing the switch. For example, the driving part can also be driven to a corresponding extent by sliding or clicking on the corresponding adjustment bar displayed on the display screen, so as to perform fine adjustment of the position and posture.

[0106] The control system of the seat display screen performs corresponding actions after activating the in-vehicle display screen.

[0107] The basic structure of the seat display screen and its control system in this embodiment has been basically described above. Next, the application of the seat display screen and its control system in this embodiment in different scenarios will be described in combination with Figures 12A-12C 、 Figures 13-14 。

[0108] As shown in Figure 12A and Figure 13 When the seat display screen is in the normal position, that is, Figure 12AIn the state shown, the occupant can determine whether the display screen needs to be used. If it is determined that the display screen needs to be used, the display screen maintains its current state, and is continuously monitored and analyzed by the sensor and the in-vehicle ECU. When the external conditions are met (the activation conditions described in the second embodiment), the seat display screen is activated to operate and enters Figure 14 Scenario 2 described later as shown. If it is determined that the display screen does not need to be used and the occupant expects to fold the display screen, then the user can manually operate the switch to activate the seat display screen to operate, and the display screen can enter Figure 12B the intermediate state and finally enter Figure 12C the final folded state shown, that is, the second posture. Such an operation can fundamentally avoid the possibility of the rear occupant colliding with the front display screen due to inertia in the event of emergency braking or a vehicle collision; in addition, the display screen can also be finely adjusted by manually operating the switch. This scenario can be called Scenario 1. Of course, when the display screen needs to be used, the occupant can also operate the switch to make the display screen return from Figure 12C the second posture to Figure 12A the first posture to resume the normal use state. The specific operation mode of the display screen in this Scenario 1 can be referred to Figure 14 .

[0109] Figure 14 Fig. shows the situation of Scenario 2. When it is determined that the activation conditions are met through monitoring and analysis as described in the second embodiment above, the seat display screen is activated to operate. At this time, the seat-side motor, that is, the first motor, and the display-screen-side motor, that is, the second motor, are simultaneously started and rotate in opposite directions, driving the respective corresponding support parts to rotate. The support parts will drive the gears at their respective ends to rotate together. Here, the rotation direction of the display-screen-side motor, that is, the second motor, is towards the outside of the vehicle, while the rotation direction of the seat-side motor, that is, the first motor, is towards the inside of the vehicle, thereby ensuring that the overlapping area between the display screen and the head of the rear occupant can be minimized. The gears rotating in different directions will move in their respective corresponding guide chutes. The racks provided on the upper and lower surfaces in the respective guide chutes form a meshing relationship with the corresponding gears, avoiding relative sliding inside the chutes when the gears do not rotate. When the first gear and the second gear both move to the other ends of their respective guide chutes, that is, when the display-screen-side gear, that is, the second gear, moves towards the outside of the vehicle to the outer edge area of the display screen, and the seat-side gear, that is, the first gear, moves towards the inside of the vehicle to the inner side edge area of the seat backrest, the display screen has moved from Figure 12A its position to Figure 12BAt this position, the overlapping area between the display screen, the seat backrest, and the heads of the rear passengers has been minimized. However, the display screen is still in the first posture of expanding towards the inside of the vehicle in the left-right direction. To avoid possible collision injuries to the middle rear passengers with the display screen in this state, at this time, when the ECU detects this state, the third motor of the connecting shaft is driven to rotate, causing the side support portion of the display screen to rotate 90° around the side support portion of the seat. Due to the meshing and positioning relationship between the gear and the rack of one end of the side support portion of the display screen and the side guide chute of the display screen, the display screen also rotates 90°. Finally, the display screen is longitudinally attached to the inside of the seat, that is, the display screen is arranged in the front-rear direction on the side of the seat backrest facing the inside of the vehicle. Figure 12C The second posture shown in the figure minimizes the overlapping area between the display screen and the rear passengers.

[0110] In summary, the seat display screen, seat, control system, and vehicle with an active anti-collision function proposed by the present disclosure can actively identify and judge the possibility of collision between the rear passengers and the front seat display screen, and can automatically adjust the position of the display screen in advance to avoid the area where collisions with the passengers may occur, preventing the situation of passengers being injured by colliding with the display screen, improving the safety of the passengers, ensuring no safety risks while increasing the entertainment of the rear row, and having a simple structure, relatively low cost, and being easy to implement in mass-produced vehicles.

[0111] In addition, it should be noted that although in the above embodiments, the first guide chute and the second guide chute each have racks formed on both the upper and lower inner surfaces, it is also possible to have a rack formed only on one inner surface. Although in the above embodiments, the seat side guide portion and the seat side guide mating portion, as well as the display screen side guide portion and the display screen side guide mating portion, are described by taking the chute with a rack and a gear as an example, this is not restrictive. For example, each guide portion can be set as a chute without a rack, and each guide mating portion can be set as a slider. Magnets are provided at both ends of the chute, and through electromagnetic control, the slider moves along the chute under the magnetic adsorption effect. For another example, in addition to the above magnets, a compression spring is additionally provided to provide a sliding driving force. For another example, translation can be achieved through a conveyor belt, or through a slider and a cable, etc. Of course, due to the smooth movement and good positioning of the gear-rack meshing, it is preferred.

[0112] The above specific implementation manners do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seat display screen for installation behind a seat backrest, characterized in that, Comprising: A display screen; And A driving part, which is arranged between the seat backrest and the display screen and is used to control the position and posture of the display screen relative to the seat backrest. Wherein, the driving part includes: a translation driving part, which drives the display screen to translate relative to the seat backrest in the left - right direction; and a rotation driving part, which drives the display screen to rotate so that the display screen switches between a first posture and a second posture relative to the seat backrest. In the first posture, the display screen is arranged in the left - right direction behind the seat backrest, and in the second posture, the display screen is arranged in the front - back direction on the side of the seat backrest facing the vehicle interior.

2. The seat display screen according to claim 1, characterized in that, The translation driving part of the driving part includes: A seat - side guiding part, which is used to be embedded and fixed on the rear surface of the seat backrest and extends in the left - right direction; A seat - side supporting part, one end of which has a seat - side guiding and mating part, and the seat - side guiding and mating part is assembled on the seat - side guiding part to move along the seat - side guiding part; and A display - screen - side supporting part, one end of which is connected to the display screen, and the other end of the display - screen - side supporting part is connected to the other end of the seat - side supporting part, so that the display - screen - side supporting part can rotate around the other end of the seat - side supporting part, thereby enabling the display screen to switch between the first posture and the second posture.

3. The seat display screen according to claim 2, wherein: The seat - side guiding part is configured as a first guiding chute, and at least one of the two inner surfaces of the first guiding chute that are opposed to each other in the up - down direction is formed in a rack - like shape with teeth; The seat - side guiding and mating part provided at one end of the seat - side supporting part is configured as a first gear, and the first gear can be meshed with the teeth of the first guiding chute; The seat - side supporting part includes a first motor, the rotating shaft of the first motor is coaxially connected to the first gear to drive the first gear to rotate, and The length of the first guiding chute is configured to be more than half of the width of the rear surface of the seat backrest, and one end of the first guiding chute is arranged at a position corresponding to one of the two end parts of the rear surface in the left - right direction that faces the vehicle interior.

4. The seat display screen according to claim 2 or 3, wherein: The translation driving part of the driving part further includes a display - screen - side guiding part, which is fixed on the back surface of the display screen and extends in the left - right direction, and A display - screen - side guiding and mating part is provided at one end of the display - screen - side supporting part, and the display - screen - side guiding and mating part is assembled on the display - screen - side guiding part to move along the display - screen - side guiding part.

5. The seat display screen according to claim 4, wherein: The display - screen - side guiding part is configured as a second guiding chute, and at least one of the two inner surfaces of the second guiding chute that are opposed to each other in the up - down direction is formed in a rack - like shape with teeth. One end of the display screen side support part is provided with a display screen side guiding and mating part configured as a second gear, and the second gear can mesh with the rack of the second guiding chute. The display screen side support part includes a second motor, and a rotating shaft of the second motor is coaxially connected to the second gear to drive the second gear to rotate, and The length of the second guiding chute is configured to be more than half of the width of the back surface of the display screen, and one end of the second guiding chute is arranged at a position corresponding to one end of the two ends in the left-right direction of the back surface facing the outside of the vehicle.

6. The seat display screen according to claim 5, wherein The first motor and the second motor are controlled to rotate in opposite directions, so that while the display screen moves relative to the display screen side support part in a first direction, the display screen also moves in the first direction following the translation of the seat side support part along the seat side guiding part, and the first direction is a direction towards one side in the left-right direction.

7. The seat display screen according to claim 6, wherein One of the other end of the seat side support part and the other end of the display screen side support part is a pair of connecting pieces arranged oppositely and spaced apart from each other in the up-down direction, The other of the other end of the seat side support part and the other end of the display screen side support part is assembled between the pair of connecting pieces and is connected to each other by a connecting shaft extending in the up-down direction, The connecting shaft is a rotating shaft for the display screen side support part to rotate around the seat side support part, and the connecting shaft is integrally formed or integrally fixed with the other end of the display screen side support part, and A third motor is arranged on the connecting shaft, so that the connecting shaft is coaxially connected to a rotating shaft of the third motor, and the connecting shaft provided with the third motor is configured as the rotation driving part.

8. A seat, characterized in that, The seat includes the seat display screen according to any one of claims 1-7.

9. A control system for a seat display screen, comprising: The seat of claim 8; An occupant monitoring part for monitoring the relative displacement of an occupant behind the seat relative to the seat display screen; A calculation part for calculating collision information of the occupant relative to the seat display screen based on the relative displacement monitored by the occupant monitoring part, and A control part for controlling the energization of the driving part of the seat display screen based on the collision information calculated by the calculation part, so that the display screen moves and rotates from the first posture to the second posture; or, based on an input instruction of the occupant, controlling the energization of the driving part of the seat display screen, so that the display screen moves and / or rotates based on the input instruction.

10. A vehicle, characterized in that, The vehicle is provided with the control system for the seat display screen according to claim 9.

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