Entertainment device, seat and vehicle

Abstract

The invention relates to an entertainment device, a seat and a vehicle, which can simultaneously realize a display function for a user and a small table plate function for temporary office work and placement of meals, articles and the like by using a single display screen part, and is high in utilization rate and free from occupying excessive space. The entertainment device comprises an entertainment screen part; a support arm portion provided between the entertainment screen portion and the seat back such that the entertainment screen portion is mounted to a rear side of the seat back via the support arm portion; the rotating angle adjusting part is at least arranged between the supporting arm part and the entertainment screen part, so that the entertainment screen part can rotate at a preset rotating angle, and the entertainment screen part has a display position with the back facing a seat backrest and a table plate position with the back facing upwards and serving as a small table plate; and the lifting adjusting part is arranged between the supporting arm part and the seat backrest, so that the supporting arm part and the entertainment screen part can be lifted at a preset distance.

Description

Technical Field

[0001] The present disclosure relates to an entertainment device, a seat and a vehicle, and belongs to the technical field related to seat auxiliary functions. Background Art

[0002] As the automotive consumer market's demand for enhanced passenger experience continues to evolve, cars are no longer limited to traditional means of transportation. More and more users are viewing their cars as places for daily entertainment, work, dining, and more. Consequently, rear-seat passengers' expectations for the functional features of the front seatbacks are becoming increasingly diverse. They not only want to use the entertainment screens mounted on the front seatbacks to access audio and video content for travel or daily rest, but also want to use the small table for temporary work, storage of food, and other practical functions.

[0003] However, most existing seatback-mounted entertainment devices only offer a single display function, making them inadequate for temporary office work, storing food, or storing other items. To address this, the concept of placing both an independent entertainment screen and a small table in the front seatbacks has been proposed. However, this arrangement would excessively occupy the already limited seatback space, resulting in a bloated overall structure, increased manufacturing costs, and low utilization, making it difficult to achieve a balance between functionality and space efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the present disclosure proposes an entertainment device, seat and vehicle, which can use a single display screen to simultaneously realize the display function for the user and the function of a small table for temporary office work, placing meals, items, etc., with high utilization rate and without excessive space occupation.

[0005] Specifically, the first aspect of the present disclosure provides an entertainment device installed on a seat back, comprising: an entertainment screen portion; a support arm portion, the support arm portion being arranged between the entertainment screen portion and the seat back, so that the entertainment screen portion is installed to the rear side of the seat back via the support arm portion; a corner adjustment portion, the corner adjustment portion being arranged at least between the support arm portion and the entertainment screen portion, so that the entertainment screen portion can be rotated at a predetermined angle to have a display position for user viewing and a table position with the back facing up to serve as a small table; and a lifting adjustment portion, the lifting adjustment portion being arranged between the support arm portion and the seat back, so that the support arm portion together with the entertainment screen portion can be lifted and lowered at a predetermined distance.

[0006] According to the entertainment device with the above configuration, the single function limitation of the traditional entertainment screen is broken through. By improving the connection structure between the entertainment screen part and the seat back to include a corner adjustment part, the form conversion from display to table board is realized. The entertainment screen part itself can also be used as a small table board, so that the space in the car can be flexibly reused according to needs without excessive encroachment. The usage scene can be flexibly adjusted according to user needs, meeting various needs such as daily entertainment, office, dining, storage, etc., improving user satisfaction, and improving competitiveness; and, in addition to the corner adjustment part, it is also equipped with a lifting adjustment part, so it can adapt to the viewing angle needs of users of different heights, or provide a more comfortable operating height in table board mode, significantly enhancing the applicability of the device and improving utilization.

[0007] Preferably, in the entertainment device of the first aspect, the angle adjustment portion includes: a rotating shaft portion extending outward from at least one of the left and right side surfaces of the entertainment screen portion; a receiving portion arranged in the end portion of the support arm portion on the entertainment screen portion side, the rotating shaft portion being rotatably received in the receiving portion; and a motor, the motor being connected to the rotating shaft portion and providing a rotational driving force to the rotating shaft portion.

[0008] According to the entertainment device with the above configuration, the mechanical cooperation between the simple structural shaft part and the receiving part can ensure the stability of the entertainment screen rotation process, avoiding shaking or jamming; through motor drive, electric angle adjustment can be achieved, and users can easily switch between display mode and desktop mode through the control panel or remote control operation, which is more convenient than traditional manual adjustment method and is easy to operate in a moving vehicle.

[0009] Preferably, in the entertainment device of the first aspect, the angle adjustment part also includes a rotation locking part, and the rotation locking part includes: a slider part, the slider part is arranged in one of the shaft part and the receiving part, and the slider part has a first ratchet; a second ratchet is arranged in the other of the shaft part and the receiving part, and the second ratchet can engage with the first ratchet; and a spring connected to the slider part at one end and expanded and contracted with the sliding of the slider part, the slider part moves in response to the user's command to overcome the spring force, so that the first ratchet and the second ratchet are separated and the engagement is released, wherein, in a state where the first ratchet and the second ratchet are engaged, the shaft part is locked to the receiving part and cannot rotate, and wherein, in a state where the engagement between the first ratchet and the second ratchet is released, the shaft part can rotate.

[0010] According to the entertainment device with the above configuration, the rotation locking part provides a reliable angle locking function through the engagement of the first ratchet and the second ratchet, ensuring that the entertainment screen part remains stable in the display or table state and will not cause angular displacement due to vehicle vibration or minor collisions; the slider part ensures the controllability of the locking and unlocking process, and the user can quickly switch states as needed, taking into account both safety of use and operational flexibility.

[0011] Preferably, in the entertainment device of the first aspect, the lifting and adjusting part includes a pneumatic telescopic cylinder, which is arranged on the inner side of the seat back along the height direction of the seat back, that is, the lifting direction, and includes a cylinder body and a piston that is telescopic along the lifting direction in the cylinder body, wherein one of the cylinder body and the piston is fixed to the inner side of the seat back, and the end of the support arm part on the seat back side is fixedly connected to the other of the cylinder body and the piston, and wherein the pneumatic telescopic cylinder drives the support arm part and the entertainment screen part to move along the lifting direction through the telescopic movement of the other of the cylinder body and the piston.

[0012] According to the entertainment device with the above configuration, the lifting and adjusting part is configured with a pneumatic telescopic cylinder, which can automatically provide smooth and continuous lifting power, so that the entertainment screen part can accurately adjust the height within a predetermined range. Moreover, compared with other mechanical lifting mechanisms, the pneumatic system can provide better overload resistance and quiet effect, and is suitable for use in the vehicle environment; at the same time, the pneumatic telescopic cylinder has a compact structure and can make full use of the internal space of the seat back without affecting the comfort of the seat.

[0013] Preferably, in the entertainment device of the first aspect, the lifting and adjusting part also includes a gas pipeline, one end of which is connected to the air inlet of the pneumatic telescopic cylinder, and the other end is connected to the air source of the seat massage mechanism, so as to receive compressed gas from the air source and drive the pneumatic telescopic cylinder to extend and retract.

[0014] According to the entertainment device with the above configuration, the lifting and adjustment part saves the cost and space of configuring a separate power source for the lifting system by sharing the air source of the seat massage mechanism, simplifies the internal structure of the seat, reduces the system complexity and failure rate, and reduces energy consumption.

[0015] Preferably, the entertainment device of the first aspect further includes: a locking pin portion, which is connected between the end portion of the support arm portion on the seat back side and the lifting adjustment portion to fix the support arm portion and the lifting adjustment portion to each other or rotatably connect them to each other, wherein the locking pin portion has a weak portion arranged along its force direction, and the strength of the weak portion is lower than that of other parts of the locking pin portion, so that when the shear force applied to the locking pin portion is greater than a predetermined value, the weak portion breaks, wherein the predetermined value is configured not to exceed the maximum bearing strength of the support arm portion or the lifting adjustment portion.

[0016] According to the entertainment device with the above configuration, since it is equipped with a locking pin portion having a weak portion, the weak portion of the locking pin portion can form a safety protection mechanism. In extreme situations such as vehicle collisions, the weak portion will preferentially break to absorb the impact force, preventing damage to the support arm portion or the lifting and adjusting portion due to overload. Moreover, when the impact force exceeds a predetermined threshold, the preferential breaking of the weak portion causes the connection between the support arm portion and the lifting and adjusting portion to fail. At this time, the entertainment screen portion and the support arm portion will fall downward under the action of gravity, quickly separating from the passenger's head or chest area, fundamentally preventing the passenger's head or chest from directly colliding with the entertainment screen portion, thereby reducing the risk of the display screen shattering and injuring the passenger due to the impact. At the same time, as the entertainment screen portion falls, the space originally occupied by the entertainment screen portion is released, and the buffer area between the passenger's head or chest and the seat back is expanded, providing more buffering room for the inertial movement of the passenger's body during the collision, helping to disperse the impact force, further enhancing the safety protection capabilities for the passenger, and reducing potential injuries in emergency situations. In addition, when the locking pin portion rotatably connects the support arm portion and the lifting and adjusting portion to each other, the end portion of the support arm portion on the seat back side and the lifting and adjusting portion also constitute a rotating pair, and the support arm portion can also rotate relative to the seat back, thereby adjusting the horizontal distance of the end portion of the support arm portion on the entertainment screen side relative to the seat back, and performing multi-dimensional rotation control.

[0017] Preferably, in the entertainment device of the first aspect, the support arm portion includes: a main support arm, the main support arm is configured as a rigid support rod, one end of which is fixed to the locking pin portion, and the other end of which is connected to the entertainment screen portion; and a secondary support arm, the secondary support arm is configured as an X-shaped crush rod, which is arranged parallel to the side of the main support arm along the length direction thereof, the X-shaped crush rod having a plurality of X-shaped units continuously arranged and connected in series along the length direction thereof, each of the X-shaped units being hinged in the middle by two cross rods to form an X shape, one end of the X-shaped crush rod is fixed to the locking pin portion, and the other end is connected to the entertainment screen portion.

[0018] According to the entertainment device with the above configuration, the main support arm provides stable structural support to ensure that the entertainment screen portion remains stable during normal use; the X-shaped collapse rod of the secondary support arm plays a role after the locking pin portion breaks, and absorbs the impact energy through the collapse deformation of the X-shaped unit, further reducing the impact force of the entertainment screen portion on the passenger, forming a dual safety protection mechanism, and improving the safety of the device in extreme situations.

[0019] Preferably, the entertainment device of the first aspect further includes: a control unit, which performs at least one of the following control operations: controlling the corner adjustment unit in response to a user's instruction so that the entertainment screen unit rotates to switch between a display position for user viewing and a table position with the back facing up; controlling the lifting adjustment unit in response to a user's instruction so that the support arm unit together with the entertainment screen unit rises and falls a predetermined distance; controlling the lifting adjustment unit in response to a received collision signal so that the support arm unit together with the entertainment screen unit descends to the lowest position, and controlling the corner adjustment unit so that the entertainment screen unit remains at or switches to the display position; and when the entertainment screen unit is in the table position, in response to a received signal of a seat back angle change, controlling the corner adjustment unit so that the entertainment screen unit rotates at a predetermined angle to keep the entertainment screen unit in a horizontal posture; and when the entertainment screen unit is in the display position, in response to a received signal of a seat back angle change, controlling the corner adjustment unit so that the entertainment screen unit rotates at a predetermined angle to keep the entertainment screen unit in a vertical posture.

[0020] The aforementioned entertainment device, equipped with a control unit, enables multi-dimensional control, enhancing its practicality, safety, and intelligence. Users can easily switch the entertainment screen between display and tabletop positions, as well as adjust its height, through commands, eliminating manual operation. This simplifies usage and adapts to the needs of different passengers. In the event of an emergency, such as a collision, the control unit quickly responds to the collision signal, driving the lift adjustment unit to lower the entertainment screen to its lowest position. The angle adjustment unit ensures that the screen remains in or switches to the display position. This prevents the screen from protruding and exacerbating collision damage, while also reducing the risk of component breakage by regulating its position, providing additional safety for passengers. The control unit also features dynamic posture calibration for different usage scenarios. When the entertainment screen is in the tabletop position, it automatically adjusts its angle based on the seatback angle to maintain a horizontal position, ensuring that items placed on it remain stable and prevent them from tipping over. In the display position, it similarly maintains an upright position based on the seatback angle, ensuring a comfortable viewing angle and preventing image distortion caused by seat adjustments.

[0021] A second aspect of the present disclosure provides a seat, the seat comprising the entertainment device according to the first aspect. A third aspect of the present disclosure provides a vehicle, the vehicle comprising the seat according to the second aspect.

[0022] Since the seat of the second aspect and the vehicle of the third aspect are both integrated with the entertainment device of the first aspect, they can also achieve the various technical effects mentioned above, which will not be elaborated here.

[0023] The technical solutions and technical effects of the entertainment device for a seat back, the seat, and the vehicle disclosed in the present invention have been generally described above. The following description will be more easily understood with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are provided for a better understanding of the present invention and are not intended to limit the present invention.

[0025] Figure 1 is a side view of a seat mounted with the entertainment device of the first embodiment, wherein the entertainment screen portion is in a display position;

[0026] Figure 2 is a side view of a seat equipped with the entertainment device of the first embodiment, wherein the entertainment screen portion is in the table position;

[0027] Figure 3 is a top view of a seat equipped with the entertainment device of the first embodiment, wherein the entertainment screen portion is in a display position;

[0028] Figure 4 is a side view of a portion of the entertainment device of the first embodiment;

[0029] Figure 5A and Figure 5B is a schematic diagram of the entertainment screen portion of the entertainment device according to the first embodiment being in a display position and maintaining a vertical position when the angle of the seat back changes;

[0030] Figure 6A and Figure 6B is a schematic diagram showing the entertainment screen portion of the entertainment device according to the first embodiment being maintained horizontal when the entertainment screen portion is at the table position and the angle of the seat back changes;

[0031] Figure 7 is a schematic diagram of a rotation locking portion of the angle adjustment portion of the entertainment device according to the first embodiment;

[0032] Figure 8 is a schematic diagram of the support arm portion of the entertainment screen portion of the entertainment device of the first embodiment;

[0033] Figure 9 1 is a schematic diagram of a locking pin portion of the entertainment screen portion of the entertainment device according to the first embodiment.

[0034] Reference Numbers

[0035] 1 seat

[0036] 2 seat backs

[0037] 3 Backrest angle adjustment motor

[0038] 10 Entertainment screen

[0039] 20 Support arm

[0040] 21 support rod

[0041] 22 X-shaped crush bar

[0042] 23 Locking pin

[0043] 24 Weak Section

[0044] 30 Corner adjustment unit

[0045] 31 Shaft

[0046] 32 Rotation lock part

[0047] 33 Sliders

[0048] 34 First Ratchet

[0049] 35 Second ratchet

[0050] 36 Spring

[0051] 40 lifting adjustment part

[0052] 41 pneumatic telescopic cylinder

[0053] 42 Air source for seat massage mechanism DETAILED DESCRIPTION

[0054] Hereinafter, the technical solutions of the present invention will be more clearly explained by describing specific embodiments of the present invention with reference to the accompanying drawings.

[0055] It should be noted that the drawings in the present invention are merely schematic diagrams for the purpose of clearly illustrating 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 understood as limiting the present invention, and they may differ from the actual structure when used. In addition, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. that may appear in the following description to indicate direction or position are for the purpose of convenience of explanation and are not restrictive. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0056] <First embodiment>

[0057] The first embodiment of the present disclosure provides an entertainment device installed on the seat back 2 of a seat 1, such as Figure 1 and Figure 2 As shown, the entertainment device can use a single entertainment screen 10 to simultaneously realize the display function for the user ( Figure 1 ) and a small table function for temporary office use, placing meals, items, etc. ( Figure 2 ), high utilization rate and does not occupy excessive space.

[0058] Specifically, see Figure 1 and Figure 2 The entertainment device installed on the seat back 2 of this embodiment includes: an entertainment screen portion 10; a support arm portion 20, the support arm portion 20 being arranged between the entertainment screen portion 10 and the seat back 2, so that the entertainment screen portion 10 is installed to the rear side of the seat back 2 via the support arm portion 20; an angle adjustment portion 30 (see Figure 3 、 Figure 7 ), the angle adjustment portion 30 is at least provided between the support arm portion 20 and the entertainment screen portion 10, so that the entertainment screen portion 10 can be rotated at a predetermined angle to have a display position with its back facing the seat back 2 ( Figure 1 ) and the table top position with the back facing up as a small table top ( Figure 2 ); and lifting adjustment portion 40 (see Figure 4 ), the lifting adjustment portion 40 is arranged between the support arm portion 20 and the seat back 2, so that the support arm portion 20 together with the entertainment screen portion 10 can be lifted and lowered at a predetermined distance.

[0059] According to the entertainment device of this embodiment, it breaks through the single function limitation of the traditional entertainment screen part. By improving the connection structure between the entertainment screen part 10 and the seat back 2 to include a corner adjustment part 30, the form conversion from display to table board is realized. The entertainment screen part 10 itself can also be used as a small table board, so that the space in the car can be flexibly reused according to needs without excessive encroachment. The usage scene can be flexibly adjusted according to user needs, meeting various needs such as daily entertainment, office, dining, and storage, improving user satisfaction, and improving competitiveness; and, in addition to the corner adjustment part 30, it is also provided with a lifting adjustment part 40, so that it can adapt to the viewing angle requirements of users of different heights, or provide a more comfortable operating height in table board mode, significantly enhancing the applicability of the device and improving utilization.

[0060] Below, we will refer to Figure 3 、 Figure 7etc. describe the corner adjustment portion 30 of the entertainment device of this embodiment. In this embodiment, the corner adjustment portion 30 may include: a rotation shaft portion 31 extending outward from the left and right side surfaces of the entertainment screen portion 10; a receiving portion (not shown) provided in the end portion of the support arm portion 20 on the entertainment screen portion 10 side, in which the rotation shaft portion 31 is rotatably received; and a motor (not shown) connected to the rotation shaft portion 31 and providing a rotational driving force to the rotation shaft portion 31.

[0061] The motor can be a micro DC motor, which can be directly integrated into the rotating shaft portion 31, thereby directly driving the rotating shaft portion 31 to rotate forward and reverse. In addition, considering that the rotating shaft portion 31 is generally short and the layout space is relatively limited, the present embodiment can also fix the motor to the outer wall of the receiving portion of the support arm portion, so that the motor output shaft faces the interior of the receiving portion, and a driving gear is sleeved on the motor output shaft, and a driven gear is coaxially fixed to the end of the rotating shaft portion 31 close to the motor. The driving gear and the driven gear are engaged to form a reduction transmission structure, thereby driving the rotating shaft portion 31 to rotate forward and reverse. That is, as described above, the motor is connected to the rotating shaft portion 31 and can provide power to the rotating shaft portion 31. As for the specific layout position of the motor, it is not limited here.

[0062] This embodiment uses the above-configured angle adjustment portion 30, and the mechanical coordination between the simple structure of the rotating shaft portion 31 and the receiving portion to ensure the stability of the rotation process of the entertainment screen portion 10 and avoid shaking or jamming. Driven by a motor, electric angle adjustment can be achieved, and users can easily switch between display mode and desktop mode through the control panel or remote control. Compared with the traditional manual adjustment method, it is more convenient and easy to operate in a moving vehicle.

[0063] In addition, in order to maintain the rotation angle when the entertainment screen part 10 is rotated to a predetermined angle, the rotation angle adjustment part 30 of this embodiment is further configured with Figure 7 The rotation locking portion 32 shown. The rotation locking portion 32 may include: a slider portion 33, which is arranged on the shaft portion 31 ( Figure 7 The slider portion 33 is arranged in the support arm portion 20 (not shown) and is able to slide, the slider portion 33 has a first ratchet 34; a second ratchet 35 is provided on the support arm portion 20 (specifically, the receiving portion of the support arm portion 20 that accommodates the rotating shaft portion 31), and the second ratchet 35 can engage with the first ratchet 34; and a spring 36, one end of which is connected to the slider portion 33 and is extended and retracted in conjunction with the sliding of the slider portion 33. The sliding of the slider portion 33 can be driven electrically or manually. When driven electrically, for example, an electromagnetic method can be used, and an electromagnetic coil can be fixed on the back of the second ratchet 35, and the corresponding position of the slider portion 33 (for example Figure 7The left end of the slider 33 connected to the spring 36 is opposite to the second ratchet 35) and is embedded in the armature. When the user issues an unlocking command, the electromagnetic coil is energized to generate a magnetic field to attract the armature, driving the slider 33 to overcome the spring force and move ( Figure 7 When manual control is adopted, for example, a handle or a pull line can be provided to directly pull the slider 33, for example Figure 7 The slider portion 33 is pulled to the right to drive the slider portion 33 to move and unlock, and the spring is released to reset it and re-enter the engaged and locked state.

[0064] Figure 7 3 shows a state in which the first ratchet teeth 34 and the second ratchet teeth 35 are engaged, and the rotation of the shaft portion 31 of the entertainment screen portion 10 is locked and cannot rotate. When the slider portion 33 slides to the right in response to a user instruction, the engagement between the first ratchet teeth 34 and the second ratchet teeth 35 is released, and the shaft portion 31 can rotate to a predetermined angle.

[0065] In this embodiment, the rotation locking portion 32 provides a reliable angle locking function through the engagement of the first ratchet 34 and the second ratchet 35, ensuring that the entertainment screen portion 10 remains stable in the display or table state and will not cause angular displacement due to vehicle vibration or minor collisions; the slider portion 33 ensures the controllability of the locking and unlocking process, and the user can quickly switch states as needed, taking into account both safety of use and operational flexibility.

[0066] Below, we will refer to Figure 4 、 Figure 5A 、 Figure 6A etc. describe the lifting adjustment portion 40 in the entertainment device of this embodiment.

[0067] In this embodiment, the lift adjustment unit 40 is configured to include a pneumatic telescopic cylinder 41. The pneumatic telescopic cylinder 41 is located inside the seat back 2, along its height, i.e., the lift direction. The cylinder 41 includes a cylinder (not shown) and a piston (not shown) within the cylinder that retracts and extends in the lift direction. One of the cylinder and piston is fixed to the inside of the seat back, while the seatback-side end of the support arm 20 is fixedly connected to the other of the cylinder and piston. The pneumatic telescopic cylinder 41 drives the support arm 20 and the entertainment screen unit 10 in the lift direction by extending and retracting the other of the cylinder and piston.

[0068] The lift adjustment unit 40 may include a gas pipeline (not shown), one end of which is connected to the air inlet of the pneumatic telescopic cylinder 41 and the other end to the air source 42 of the seat massage mechanism. The pipeline receives compressed gas from the air source 42 and drives the pneumatic telescopic cylinder 41 to extend and retract. The air source 42 includes a compressed air pump and an air tank. The seat massage mechanism is connected to the air source 42 via another air pipe. A control valve assembly can be provided to selectively distribute compressed gas from the air source 42 to the pneumatic telescopic cylinder 41 or the seat massage mechanism to control the operating state of both (extending and retracting action or massaging action).

[0069] In this embodiment, the lift adjustment unit 40 is configured with a pneumatic telescopic cylinder 41, which automatically provides smooth and continuous lifting power, allowing the entertainment screen unit 10 to be precisely adjusted in height within a predetermined range. Furthermore, compared to other mechanical lift mechanisms, the pneumatic system offers improved overload resistance and quietness, making it suitable for use in a vehicle interior. Furthermore, the pneumatic telescopic cylinder 41 is compact, fully utilizing the interior space of the seat back 2 without compromising seat comfort. By sharing the air source 42 with the seat massage mechanism, the lift adjustment unit 40 eliminates the cost and space of a separate power source for the lift system, simplifying the seat's internal structure, reducing system complexity and failure rate, and lowering energy consumption.

[0070] Next, refer to Figure 8 、 Figure 9 The structure of the support arm portion 20 of the entertainment device of this embodiment will be described.

[0071] like Figure 8 As shown, the entertainment device of this embodiment also includes a locking pin 23, which is connected between the seatback-side end of the support arm 20 and the lift adjustment unit 40 to secure the support arm 20 and the lift adjustment unit 40 to each other or rotatably connect them. The locking pin 23 has a weak portion 24 arranged along the direction in which it is subjected to force. The weak portion 24 has a lower strength than the rest of the locking pin 23, so that when the shear force applied to the locking pin 23 exceeds a predetermined value, the weak portion 24 breaks. The predetermined value is configured to not exceed the maximum bearing strength of the support arm 20 or the lift adjustment unit 40. Therefore, when the external force reaches the predetermined value, the weak portion 24 breaks first. At this point, the external force has not yet exceeded the limit (maximum bearing strength) that the support arm or lift adjustment unit can withstand, so the support arm 20 and the lift adjustment unit 40 are not damaged. The weak portion 24 can be formed by removing a portion of the thickness of the locking pin 23.

[0072] This embodiment utilizes a locking pin 23 with a weak portion 24, enabling the weak portion 24 of the locking pin 23 to form a safety protection mechanism. In extreme situations, such as a vehicle collision, the weak portion 24 will preferentially break to absorb the impact force, preventing damage to the support arm 20 or the lift adjustment unit 40 due to overload. Furthermore, when the impact force exceeds a predetermined threshold, the preferential breaking of the weak portion 24 causes the connection between the support arm 20 and the lift adjustment unit 40 to fail. At this point, the entertainment screen unit 10, along with the support arm 20, will fall downward under the force of gravity, quickly clearing the passenger's head or chest area. This prevents direct collision between the passenger's head or chest and the display screen of the entertainment screen unit 10, thereby reducing the risk of the display screen shattering and injuring the passenger. Furthermore, as the entertainment screen unit 10 falls, the space previously occupied by the entertainment screen unit 10 is freed up, expanding the buffer area between the passenger's head or chest and the seat back 2. This provides more room for the inertial movement of the passenger's body during a collision, helps disperse the impact force, further enhances passenger safety protection, and reduces potential injuries in emergency situations. In addition, when the locking pin portion 23 rotatably connects the support arm portion 20 and the lifting and adjusting portion 40 to each other, the end of the support arm portion 20 on the seat back side and the lifting and adjusting portion 40 also form a rotating pair, and the support arm portion 20 can also rotate relative to the seat back 2, thereby adjusting the horizontal distance of the end of the support arm portion 20 on the entertainment screen portion 10 side relative to the seat back 2, and performing multi-dimensional rotation control.

[0073] like Figure 8 As shown, in the entertainment device of this embodiment, the support arm portion 20 includes: a main support arm, the main support arm is configured as a rigid support rod 21, one end of which is fixed to the locking pin portion 23, and the other end of which is connected to the entertainment screen portion 10; and a secondary support arm, the secondary support arm is configured as an X-shaped crush rod 22, which is arranged parallel to one side of the main support arm along the length direction thereof, the X-shaped crush rod 22 has a plurality of X-shaped units continuously arranged and connected in series along the length direction thereof, each X-shaped unit is hinged in the middle by two cross rods to form an X shape, one end of the X-shaped crush rod is fixed to the locking pin portion 23, and the other end is connected to the entertainment screen portion 10.

[0074] In addition to the traditional rigid support rods 21, the support arm 20 of this embodiment is also equipped with an X-shaped crush bar 22. The rigid support rod 21 of the main support arm provides stable structural support, ensuring that the entertainment screen unit 10 remains stable during normal use. The X-shaped crush bar 22 of the secondary support arm functions after the locking pin 23 breaks. The crushing deformation of the X-shaped unit absorbs impact energy, further reducing the impact force of the entertainment screen unit 10 on passengers. This creates a dual safety protection mechanism and enhances the safety of the device in extreme situations.

[0075] The mechanical structure of the entertainment device of this embodiment has been basically described above. Next, the control of the entertainment device of this embodiment will be described.

[0076] Specifically, the entertainment device of this embodiment also includes a control unit, which performs at least one of the following control operations: controlling the rotation angle adjustment unit 30 in response to a user's instruction to rotate the entertainment screen unit 10 to switch between a display position for user viewing and a table position with the back facing upward; controlling the lifting adjustment unit 40 in response to a user's instruction to lift and lower the support arm unit 20 together with the entertainment screen unit 10 by a predetermined distance; controlling the lifting adjustment unit 40 in response to a received collision signal to lower the support arm unit 20 together with the entertainment screen unit 10 to the lowest position, and controlling the rotation angle adjustment unit 30 to maintain or switch the entertainment screen unit 10 to the display position; and when the entertainment screen unit 10 is in the table position, if the user adjusts the angle of the seat back 2 by adjusting the backrest angle adjustment motor 3, then in response to the received signal of the seat back angle change, controlling the rotation angle adjustment unit 30 to rotate the entertainment screen unit 10 by a predetermined angle to keep the entertainment screen unit in a horizontal posture (see Figure 6A 、 Figure 6B ); and when the entertainment screen portion 10 is in the display position, if the user adjusts the angle of the seat back 2 by adjusting the backrest angle adjustment motor 3, then in response to the received signal of the seat back angle change, the angle adjustment portion 30 is controlled to rotate the entertainment screen portion 10 at a predetermined angle to keep the entertainment screen portion 10 in a vertical posture (see Figure 5A 、 Figure 5B ).

[0077] The control unit can achieve the above functions wirelessly. For example, the main controller is integrated into the seat back, equipped with a Bluetooth module and a radio frequency receiving unit, and the slave devices are respectively deployed in the corner adjustment unit 30, the lifting adjustment unit 40 and various sensors (angle sensors, collision sensors, etc.) to form a stable wireless control network. When the user issues a command to switch the display / table position or lift, a wireless signal can be generated through the vehicle's central control screen, mobile phone APP or the entertainment screen's built-in touch panel, voice control, etc. The main controller receives and parses the command, and sends a rotation angle signal to the motor drive module of the corner adjustment unit 30 via Bluetooth, and sends a lifting distance signal to the control module of the pneumatic telescopic cylinder 41 of the lifting adjustment unit 40 to achieve precise adjustment. When the vehicle collision sensor is triggered, the body safety system sends a collision command to the main controller via a radio frequency signal. The main controller immediately controls the lifting adjustment unit 40 via a Bluetooth command to lower the entertainment screen unit 10 to the lowest position, and sends an angle lock signal to the corner adjustment unit 30 to ensure that it remains in the display position. In order to dynamically adapt to changes in seat back angles, the main controller receives wireless data from the angle sensor built into the seat. When the entertainment screen part 10 is in the table position, it calculates the required compensation angle and sends a rotation command to the motor of the angle adjustment part 30 to maintain the horizontality; when the entertainment screen part 10 is in the display position, it sends a corresponding command to keep it vertical. The entire process achieves seamless response through real-time data interaction between the master and slave devices.

[0078] Therefore, the entertainment device of this embodiment can be controlled in multiple dimensions by configuring the above-mentioned control unit, thereby improving the practicality, safety and intelligence of the entertainment device. Users can easily control the entertainment screen to switch between the display position and the table position, and adjust its lifting height through instructions, without manual operation, which simplifies the usage process and adapts to the usage needs of different passengers. In the event of an emergency such as a vehicle collision, the control unit can quickly respond to the collision signal, drive the lifting adjustment unit to lower the entertainment screen to the lowest position, and ensure that it remains or switches to the display position through the corner adjustment unit, which not only avoids the entertainment screen from protruding and aggravating the collision damage, but also reduces the risk of component breakage by standardizing the posture, providing additional safety for passengers. For different usage scenarios, the control unit also has dynamic posture calibration capabilities: when the entertainment screen is in the table position, it can automatically adjust the angle according to the change of the seat back angle to maintain a horizontal posture, ensuring that the items placed on it are stable and do not fall over; and in the display position, it can also maintain a vertical posture as the seat back angle changes, ensuring that the passenger's viewing angle is always comfortable and avoiding the picture from being skewed due to seat adjustment.

[0079] <Other embodiments>

[0080] In the first embodiment above, the lifting and adjusting portion 40 is in the form of a pneumatic telescopic cylinder 41. However, other embodiments of the present disclosure also provide other methods, for example, by a screw and nut mechanism, by rotating the screw forward and reversely, the nut sleeved on the screw is lifted and lowered, thereby driving the entertainment screen portion 10 to lift and lower. For example, it can also be achieved manually, by providing a guide rail along the up-down direction in the seat back, and by providing a plurality of sockets or a plurality of ratchets arranged along the up-down direction on the guide rail, and the entertainment screen portion 10 is fixed by inserting a pin into the socket or between the ratchets. At this time, by pulling out the pin and inserting it into the corresponding socket or between the ratchets, lifting and adjusting can also be achieved.

[0081] In the above embodiment, the supporting arms are configured as a pair, and are respectively provided on the two sides of the entertainment screen portion. However, if sufficient supporting force can be provided, only one supporting arm may be provided on one side of the entertainment screen portion.

[0082] The disclosed embodiment further provides a seat 1 including the entertainment device of the first embodiment and a vehicle having the seat 1 , which can also achieve the various technical effects of the first embodiment.

[0083] Furthermore, the entertainment screen portion mentioned in this disclosure is not limited to a single flat-panel display device such as a tablet computer, but may also include a flat-panel display device and a mounting frame thereon. For example, in this disclosure, the entertainment screen portion mentioned may be a frame portion capable of mounting a flat-panel display device.

[0084] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An entertainment device mounted on a seat back, characterized in that: include: Entertainment screen department; a support arm portion, the support arm portion being disposed between the entertainment screen portion and the seat back, such that the entertainment screen portion is mounted to the rear side of the seat back via the support arm portion; a corner adjustment portion, the corner adjustment portion being provided at least between the support arm portion and the entertainment screen portion, so that the entertainment screen portion can be rotated at a predetermined angle to have a display position for viewing by a user and a table position with the back facing upward to serve as a small table; as well as A lifting adjustment portion is provided between the support arm portion and the seat back, so that the support arm portion and the entertainment screen portion can be lifted and lowered at a predetermined distance.

2. The entertainment device according to claim 1, wherein The angle adjustment unit includes: A rotating shaft portion extending outward from at least one of the left and right side surfaces of the entertainment screen portion; a receiving portion provided in an end portion of the support arm portion on the entertainment screen portion side, wherein the rotating shaft portion is rotatably received in the receiving portion; and A motor is connected to the rotating shaft portion and provides a rotational driving force to the rotating shaft portion.

3. The entertainment device according to claim 2, wherein: The angle adjustment portion further includes a rotation locking portion, and the rotation locking portion includes: a slider portion, the slider portion being disposed in one of the rotating shaft portion and the receiving portion, and the slider portion having a first ratchet tooth; a second ratchet tooth provided on the other of the rotating shaft portion and the receiving portion, the second ratchet tooth being capable of meshing with the first ratchet tooth; and A spring having one end connected to the slider portion and extending and contracting as the slider portion slides, wherein the slider portion moves in response to a user's command to overcome the elastic force of the spring, so that the first ratchet and the second ratchet are separated and the engagement is released. Wherein, when the first ratchet and the second ratchet are engaged, the shaft portion is locked to the receiving portion and cannot rotate, and Wherein, when the meshing between the first ratchet teeth and the second ratchet teeth is released, the rotation shaft portion is rotatable.

4. The entertainment device according to any one of claims 1 to 3, characterized in that: The lifting adjustment part includes a pneumatic telescopic cylinder, which is arranged inside the seat back along the height direction of the seat back, that is, the lifting direction, and includes a cylinder body and a piston in the cylinder body that is telescopic along the lifting direction. wherein one of the cylinder and the piston is fixed to the inner side of the seat back, and the end portion of the support arm portion on the seat back side is fixedly connected to the other of the cylinder and the piston, and Wherein, the pneumatic telescopic cylinder drives the support arm portion and the entertainment screen portion to move along the lifting direction through the extension and contraction of the cylinder body and the other of the piston.

5. The entertainment device according to claim 4, characterized in that The lifting and adjusting part also includes a gas pipeline, One end of the gas pipeline is connected to the air inlet of the pneumatic telescopic cylinder, and the other end is connected to the air source of the seat massage mechanism, so as to receive compressed gas from the air source and drive the pneumatic telescopic cylinder to extend and retract.

6. The entertainment device according to any one of claims 1 to 5, characterized in that: Also includes: a locking pin portion connected between the seat back side end portion of the support arm portion and the lifting adjustment portion to fix the support arm portion and the lifting adjustment portion to each other or rotatably connect them to each other; The locking pin has a weak portion arranged along its force direction, and the strength of the weak portion is lower than that of other parts of the locking pin, so that when the shear force applied to the locking pin is greater than a predetermined value, the weak portion breaks. The predetermined value is configured not to exceed the maximum bearing strength of the support arm or the lifting adjustment part.

7. The entertainment device according to claim 6, characterized in that The support arm portion comprises: a main support arm configured as a rigid support rod having one end secured to the locking pin portion and another end connected to the entertainment screen portion; and A secondary support arm, the secondary support arm is configured as an X-shaped crush bar, and is arranged parallel to the side of the main support arm along the length direction thereof, the X-shaped crush bar having a plurality of X-shaped units continuously arranged and connected in series along the length direction thereof, each of the X-shaped units being hinged in the middle by two cross rods to form an X shape, one end of the X-shaped crush bar being fixed to the locking pin portion, and the other end being connected to the entertainment screen portion.

8. The entertainment device according to any one of claims 1 to 7, characterized in that: Also includes: A control unit that performs at least one of the following control operations: controlling the corner adjustment portion in response to a user's instruction to rotate the entertainment screen portion to switch between the display position for viewing by the user and the table top position with the back facing upward; In response to a user's instruction, the lifting and adjusting portion is controlled so that the support arm portion and the entertainment screen portion are lifted and lowered by a predetermined distance; In response to the received collision signal, controlling the lifting adjustment portion to lower the support arm portion and the entertainment screen portion to the lowest position, and controlling the corner adjustment portion to maintain or switch the entertainment screen portion to the display position; When the entertainment screen portion is in the table position, in response to a received signal indicating a change in the seat back angle, the angle adjustment portion is controlled to rotate the entertainment screen portion at a predetermined angle to maintain the entertainment screen portion in a horizontal position; as well as When the entertainment screen portion is in the display position, in response to the received signal of the seat back angle change, the angle adjustment portion is controlled to rotate the entertainment screen portion at a predetermined angle to keep the entertainment screen portion in a vertical posture.

9. A seat, characterized in that: The seat comprises the entertainment device according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle includes the seat of claim 9.

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