Seat back, seat for traffic equipment and traffic equipment

Abstract

The utility model discloses a seat back, a seat for traffic equipment and the traffic equipment. The seat back is provided with a frame embedded into the back of the seat back; a display screen is arranged in the frame; the back position of the display screen is rotationally connected with the corresponding position of the seat back frame through a damping rotating shaft device, so that the pitching angle of the display screen can be rotationally adjusted by taking the damping rotating shaft device as an axis; elastic pads are arranged at the top position and the bottom position of the back of the display screen; the frame is provided with abutting surfaces corresponding to the elastic pads, so that when the pitching angle of the display screen is between the initial angle and the maximum angle, the abutting surfaces at the corresponding positions of the frame abut against the corresponding elastic pads. According to the chair back, the pitching angle of the display screen on the chair back can be independently adjusted, and faults caused by hard collision between the display screen and the chair back are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to a seat back, a seat for transportation equipment, and transportation equipment. Background Art

[0002] Many transportation vehicles (such as airplanes, high-speed trains, and cars) are equipped with seatback screen entertainment systems, which can help passengers enjoy their travel time. The seatback screen entertainment system includes a seat and a display screen mounted on the seatback. At present, the seatbacks can generally adjust the angle, but the display screen is usually fixed on the seatback and cannot be adjusted freely, which will affect the viewing effect of the display screen for the rear passengers. In addition, there are touch buttons on the display screen. If the front seatback is adjusted, the display screen fixed on the seatback cannot be adjusted. When operating the touch buttons of the display screen, the rear passengers will feel inconvenient because the position of the touch buttons is not ergonomic. On the other hand, in a driving environment with strong vibration, the rigid fixation of the display screen on the seatback is also prone to failure. Utility Model Content

[0003] In view of this, the main purpose of the present application is to provide a seat back, a seat for transportation equipment and transportation equipment, so that the pitch angle of the display screen on the seat back can be adjusted independently and to avoid malfunctions caused by hard collision between the display screen and the seat back.

[0004] The first aspect of the present application provides a seat back, which includes: the seat back has a frame embedded in the back; a display screen is placed in the frame; the back position of the display screen and the corresponding position of the seat back frame are rotatably connected through a damping shaft, so that the display screen can be rotated around the damping shaft as the axis to adjust the pitch angle of the display screen; elastic pads are arranged at the top and bottom positions of the back of the display screen; abutment surfaces are arranged at the positions of the frame corresponding to the elastic pads, so that when the pitch angle of the display screen is at the initial angle and the maximum angle, the abutment surfaces at the corresponding positions of the frame abut against the corresponding elastic pads.

[0005] As shown above, a display screen is installed on the frame embedded in the back of the chair, which is used for rear passengers to watch videos and interact. The pitch angle of the display screen can be adjusted and the adjusted angle can be fixed by a damping shaft, which is convenient for rear passengers to manually adjust the display screen to an angle that is convenient for viewing and touching the corresponding touch buttons. The cooperation of the abutment surface at the position of the elastic pad and the frame corresponding to the elastic pad avoids hard contact between the display screen and the chair back when the user adjusts the display screen to the extreme angle (i.e. the maximum pitch angle), or avoids hard contact between the display screen and the chair back due to the vibration of the chair back at the extreme angle, thereby avoiding failures caused by hard contact.

[0006] As a possible implementation manner of the first aspect, the elastic pad includes a horizontally arranged strip rubber pad; and the abutting surface is a raised step surface.

[0007] From above, the abutment surface on the chair back is set as a raised step surface. When the display screen is adjusted to the maximum pitch angle, the step surface and the elastic pad plane abut in a parallel state, which can play a role in limiting the rotation angle of the display screen to limit the maximum pitch angle of the display screen; through the coordinated use of the strip rubber pad and the step surface, it can prevent the display screen from malfunctioning due to a hard collision with the frame on the chair back when the display screen is rotated.

[0008] As a possible implementation of the first aspect, a guide column is provided at the position where the frame is connected to the damping shaft; a guide hole is provided on the first end plate of the damping shaft connected to the frame; and the first end plate of the damping shaft is assembled at the position where the frame is connected to the damping shaft through the coupling positioning of the guide hole and the guide column.

[0009] From the above, through the coupling positioning of the guide hole on the first end plate of the damping shaft and the guide column on the frame, it can be ensured that the first end plate of the damping shaft is installed on the frame of the chair back and accurately positioned, making the installation process fast and efficient.

[0010] As a possible implementation manner of the first aspect, a mounting groove is provided at a middle position of the back of the display screen, and the second end plate of the damping shaft connected to the display screen is assembled in the mounting groove.

[0011] As described above, by matching the second end plate on the damping shaft with the mounting groove on the back of the display screen, the space can be effectively utilized to achieve overall compactness.

[0012] As a possible implementation of the first aspect, the second end plate is assembled in the mounting groove by screws, and the first end plate is assembled to the position where the frame is connected to the damping shaft by screws.

[0013] From the above, a plurality of screw holes are arranged at positions surrounding the guide hole on the first end plate, and a corresponding plurality of screw holes are arranged at corresponding positions where the frame is connected to the first end plate. The damping shaft is installed on the frame by screws passing through the screw holes on the frame and the screw holes on the first end plate in sequence; a plurality of screw holes are arranged on the second end plate, and a plurality of screw holes are also arranged at corresponding positions in the mounting groove. The damping shaft is installed on the back of the display screen by screws passing through the screw holes on the second end plate and the screw holes in the mounting groove in sequence.

[0014] As a possible implementation manner of the first aspect, the damping shaft devices are a pair that are symmetrically arranged.

[0015] From above, the damping shaft can be symmetrically arranged on both sides of the middle position of the back of the display screen to ensure the stability of the display screen when it is rotated.

[0016] As a possible implementation manner of the first aspect, the touch button of the display screen is located at a lower front side of the display screen.

[0017] From above, there are touch buttons at the lower front side of the display screen, which facilitates touch operations for rear passengers.

[0018] A second aspect of the present application provides a seat for transportation equipment, the seat comprising any seat back as described in the first aspect.

[0019] As described above, the seat used in the vehicle includes the seat back described in the first aspect, which provides the rear passengers in the vehicle with a display screen that is ergonomic and can be freely adjusted in angle, thereby providing better comfort for the rear passengers during their journey.

[0020] As a possible implementation of the second aspect, a small table is provided on the seat back below the seat back frame and can be folded and stored on the seat back.

[0021] From above, there is a display screen with adjustable angle on the upper end of the seat back, and a small foldable table on the lower end of the seat back, which not only makes it convenient for the rear passengers to watch videos, but also provides convenience for the rear passengers.

[0022] A third aspect of the present application proposes a transportation device, comprising at least two seats arranged in front and back rows, wherein the front row seat of the at least two seats arranged in front and back rows is a seat for the transportation device described in any one of the second aspects.

[0023] In summary, the present application provides a seat back, a seat for transportation equipment, and transportation equipment; the seat back includes a frame embedded in the back, a display screen placed in the frame, and a damping shaft and an elastic pad assembled between the display screen and the frame; when the rear passengers manually adjust the pitch angle of the display screen, the display screen rotates accordingly with the damping shaft as the axis, which can not only achieve the best viewing angle for the rear passengers, but also facilitate the touch use of the display screen by the rear passengers, and through the cooperation and abutment of the elastic pad with the abutment surface on the frame, hard collision between the display screen and the seat back is avoided, thereby reducing the screen failure caused thereby. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The various technical features of the present application and the relationship between them are further explained below with reference to the accompanying drawings. The accompanying drawings are exemplary, and some technical features are not shown in actual proportion. In addition, some drawings may omit technical features that are commonly used in the technical field to which the present application belongs and are not essential for understanding and implementing the present application, or additional technical features that are not essential for understanding and implementing the present application may be shown. In other words, the combination of the various technical features shown in the accompanying drawings is not used to limit the present application. In addition, throughout the present application, the same figure numbers refer to the same content. The specific description of the drawings is as follows:

[0025] Figure 1a-1b is an exploded schematic diagram of a seat back in the present application;

[0026] Figure 2 is a schematic diagram of the position of the guide column in this application;

[0027] Figure 3 It is a schematic diagram of the installation of the damping shaft device in this application;

[0028] Figure 4 It is a schematic diagram of the position limiting of the strip rubber pad in this application;

[0029] Figure 5 It is a schematic diagram of the angle adjustment of a seat back in this application.

[0030] Description of Reference Numerals

[0031] 1-display screen, 2-right damping shaft, 3-left damping shaft, 4-M4X10 screw, 5-strip rubber pad, 6-frame, 7-M4X8 screw, 8-guide column, 9-step surface, 10-guide hole.

[0032] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present application.

[0034] It should be noted that, in the description of the present invention, the terms "middle", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0036] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The specific embodiments described below can be combined with each other to form new embodiments. The same or similar ideas or processes described in one embodiment may not be repeated in other embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0037] The present application provides a seat back, which includes: the seat back has a frame embedded in the back; a display screen is placed in the frame; the back position of the display screen and the corresponding position of the seat back frame are rotatably connected through a damping shaft, so that the display screen can be rotated around the damping shaft as the axis to adjust the pitch angle of the display screen; elastic pads are arranged at the top and bottom positions of the back of the display screen; abutment surfaces are arranged at the positions of the frame corresponding to the elastic pads, so that when the pitch angle of the display screen is at the initial angle and the maximum angle, the abutment surfaces at the corresponding positions of the frame abut against the corresponding elastic pads.

[0038] Specifically, a display screen is installed on the frame embedded in the back of the chair, which is used for rear passengers to watch videos and interact. The pitch angle of the display screen can be adjusted and the adjusted angle can be fixed by a damping shaft, which is convenient for rear passengers to manually adjust the display screen to an angle that is convenient for viewing and touching the corresponding touch buttons. The cooperation of the abutment surface at the position of the elastic pad and the frame corresponding to the elastic pad avoids the hard contact between the display screen and the chair back when the user adjusts the display screen to the extreme angle (i.e., the maximum pitch angle), or avoids the hard contact between the display screen and the chair back due to the vibration of the chair back at the extreme angle, thereby avoiding failures caused by hard contact.

[0039] It should be noted that when the pitch angle of the display screen is at the initial angle, the elastic pad at the lower end of the back of the display screen contacts the abutment surface at the bottom of the seat back frame; when the pitch angle of the display screen is adjusted upward to the maximum angle, the elastic pad at the upper end of the back of the display screen contacts the abutment surface at the top of the seat back frame, and the abutment surface abuts the elastic pad in a parallel state. In a specific embodiment, since a damping shaft is provided between the display screen and the seat back, rear passengers can manually adjust the display screen to the best viewing angle. While adjusting to the best viewing angle, the touch buttons on the display screen will also be in a position that is convenient for rear passengers to operate, which is ergonomically designed. In addition, the use of the damping shaft and the elastic pad can effectively absorb part of the energy generated by the impact in a strong vibration environment, prevent the display screen from blacking out or displaying a flowery screen, and other faults, thereby protecting the normal operation of the display screen.

[0040] Optionally, the damping shafts are a pair that are symmetrically arranged.

[0041] Specifically, the damping shaft devices can be symmetrically arranged on both sides of the middle position of the back of the display screen to ensure the stability of the display screen when rotating at a certain angle.

[0042] In a specific embodiment, the damping shaft includes two, which are respectively assembled in the installation grooves on both sides of the middle of the back of the display screen and the guide columns on both sides of the middle of the frame of the seat back, so as to enhance the installation stability between the display screen and the seat back.

[0043] Optionally, a guide column is provided at the position where the frame is connected to the damping shaft; a guide hole is provided on the first end plate where the damping shaft is connected to the frame; and the first end plate of the damping shaft is assembled at the position where the frame is connected to the damping shaft through the coupling positioning of the guide hole and the guide column.

[0044] Specifically, by coupling and positioning the guide hole on the first end plate of the damping shaft and the guide column on the frame, accurate positioning of the first end plate of the damping shaft installed on the frame of the chair back can be ensured, making the installation process fast and efficient.

[0045] In a specific embodiment, since the damping shaft devices are a pair arranged symmetrically, two are provided at corresponding positions on the frame of the seat back, that is, two groups of guide columns are also provided, which are respectively arranged on both sides of the middle of the frame of the backrest of the seat and match the guide holes on the damping shaft devices.

[0046] Optionally, a mounting groove is provided at a middle position of the back of the display screen, and the second end plate of the damping shaft connected to the display screen is assembled in the mounting groove.

[0047] Specifically, by matching the second end plate on the damping shaft device with the mounting groove on the back of the display screen, the space can be effectively utilized to achieve overall compactness.

[0048] In a specific embodiment, since the damping shafts are a pair of symmetrically arranged, mounting grooves are provided on both sides of the middle position of the back of the display screen, and the damping shafts are symmetrically installed in the corresponding mounting grooves.

[0049] Optionally, the second end plate is assembled in the mounting groove by screws, and the first end plate is assembled at the position where the frame is connected to the damping shaft by screws.

[0050] Specifically, a plurality of screw holes are arranged at positions surrounding the guide hole on the first end plate, and a corresponding plurality of screw holes are arranged at corresponding positions where the frame is connected to the first end plate. The damping shaft is installed on the frame by screws passing through the screw holes on the frame and the screw holes on the first end plate in sequence; a plurality of screw holes are arranged on the second end plate, and a plurality of screw holes are also arranged at corresponding positions in the mounting groove. The damping shaft is installed on the back of the display screen by screws passing through the screw holes on the second end plate and the screw holes in the mounting groove in sequence.

[0051] In a specific embodiment, the screws are divided into two types, one type of screw, M4X8, can be used to install the damping shaft on the back of the seat, and the other type of screw, M4X10, can be used to install the damping shaft on the back of the display screen.

[0052] Figure 1a-1b An exploded view of a specific embodiment of the present application is shown. In the figure, with the upper side of the seat back as the direction, and the lower side of the seat back as the direction, the left side of the rear passenger corresponds to the left side of the display screen 1, and the right side of the rear passenger corresponds to the right side of the display screen 1. Therefore, the damping shaft mounted on the right side of the back of the display screen 1 is marked as the right damping shaft 2, and the damping shaft mounted on the left side of the back of the display screen 1 is marked as the left damping shaft 3.

[0053] In this embodiment, the frame 6 is embedded in the back of the seat back, and the overall design is a rectangular style with a side opening, and is located at the upper end of the seat back. Two guide posts 8 are respectively installed on the left and right sides of the maximum contact area inside the frame 6, and are arranged side by side in the up and down direction. Three screw holes are provided on both sides of the two guide posts 8 on each side, wherein the three screw holes surround the left and right sides of the two guide posts 8, and there are two screw holes on one side of the two guide posts 8, which are arranged in the same way as the two guide posts 8, that is, the two screw holes are arranged up and down, and there is a screw hole on the other side of the two guide posts 8, and it is close to the middle position of the two guide posts 8 (refer to Figure 2 A is an enlarged view of the guide column 8 in the middle. On the first end plates of the right damping shaft 2 and the left damping shaft 3, three screw holes are arranged around the guide hole 10, and their layout corresponds to the layout of the screw holes on the frame 6. The two guide columns 8 on the left side of the frame 6 pass through the guide holes 10 on the first end plate of the left damping shaft 3, and the two guide columns 8 on the right side of the frame 6 pass through the guide holes 10 on the first end plate of the right damping shaft 2 (refer to Figure 3 The damping shaft is shown in the enlarged view of B), and the M4X8 screws (such as Figure 1a-1b 7 in the figure) passes through the three screw holes on each side of the frame 6 and the three screw holes on the first end plate of the damping shaft in sequence, and is tightened to complete the fixation of the seat back and the damping shaft.

[0054] Optionally, the elastic pad comprises a horizontally arranged strip-shaped rubber pad; and the abutting surface is a raised step surface.

[0055] Specifically, the abutment surface on the chair back is set as a raised step surface. When the display screen is adjusted to the maximum pitch angle, the step surface and the elastic pad plane abut in a parallel state, which can play a role in limiting the rotation angle of the display screen to limit the maximum pitch angle of the display screen; through the coordinated use of the strip rubber pad and the step surface, it can prevent the display screen from malfunctioning due to a hard collision with the frame on the chair back when the display screen is rotated.

[0056] In a specific embodiment, step surfaces 9 are provided at the upper and lower ends of the frame 6 (see Figure 1a and Figure 2 ), the step surface 9 is designed to be in the shape of a long strip, matching the upper top and lower bottom of the frame 6. The main function of the step surface 9 is to support the strip rubber pad 5 to limit the maximum pitch angle of the display screen 1. The combination of the step surface 9 and the strip rubber pad 5 can prevent the display screen 1 from being damaged due to vibration.

[0057] Figure 3 An enlarged schematic diagram showing the installation of the right damping shaft 2 on the back of the display screen 1 is shown. Figure 3In the embodiment shown, two vertically arranged guide holes 10 are provided on the first end plate of the right damping shaft 2 at positions relative to the guide column 8, so as to facilitate positioning when the damping shaft 2 is installed on the seat back. On the first end plate, three screw holes are provided on both sides of the two vertically arranged guide holes 10, one side of the two guide holes 10 is provided with a screw hole, and the other side thereof is provided with two screw holes (such as Figure 1b The arrangement of the guide hole 10 and the three screw holes matches the arrangement of the guide column 8 on the right side of the frame 6 and the three screw holes around the guide column 8. When the guide column 8 on the right side of the frame 6 passes through the guide hole 10 on the right damping shaft 2, three M4X8 screws (such as Figure 1a-1b The left damping shaft device 3 is similar to the right damping shaft device 2 in design principle, so it will not be described here.

[0058] In the above embodiment, the first end plate of the damping shaft device includes a panel provided with a guide hole 10 and a vertically arranged side panel, the two are designed as an integral whole, a through hole is provided at the lower end of the side panel, and the second end plate of the damping shaft device includes a panel provided with a row of screw holes and an external hexagonal bolt parallel thereto, the external hexagonal bolt passes through the through hole at the lower end of the side panel, and the first end plate is rotatably connected to the external hexagonal bolt through a hexagonal nut. This structure enables the first end plate and the second end plate to rotate, and the first end plate and the second end plate are staggered up and down and front and back, so that the display screen 1 can be adjusted to a certain angle within the frame 6.

[0059] Strip rubber pads 5 are provided at the upper and lower ends of the back of the display screen 1. The two strip rubber pads 5 are in the shape of rectangular parallelepiped and adhered to the back of the display screen 1. Figure 4 As shown, the strip rubber pad 5 plays a role of limiting and reducing vibration. When the display screen 1 rotates its angle with the damping shaft as the axis, the upper end of the display screen 1 rotates toward the inside of the frame 6, and the lower end of the display screen 1 rotates toward the rear passengers. The back of the display screen 1 can prevent the upper end of the display screen 1 from hard collision with the seat back due to the limiting and reducing effect of the strip rubber pad 5 (see Figure 4 C in the enlarged view), thereby avoiding screen failures such as a flowery screen or a black screen on the display screen 1.

[0060] The left and right sides of the raised portion in the middle of the back of the display screen 1 are respectively provided with mounting grooves (refer to Figure 1b The exploded view shown in FIG. 1 is shown in FIG. 1 . The mounting slots on the left and right sides of the middle position of the back of the display screen 1 are provided with three screw holes, which match the arrangement of a row of screw holes on the second end plate of the damping shaft device and are fixed by M4X10 screws (such as Figure 1a-1bThe damping shaft is fixed on the back of the display screen 1 (see the reference numeral 4 in FIG. Figure 2 The damping shaft device is used as the axis between the display screen 1 and the seat back, and the rear passenger manually rotates a certain angle, such as Figure 5 The angle adjustment direction shown is as follows: E is the angle adjustment direction of the display screen 1; Figure 5 The icon in the enlarged image D shown is the touch button of the display screen 1. When the angle of the display screen 1 is adjusted upward in the direction of E, it is convenient for the rear passengers to touch the touch buttons of the display screen 1, which is ergonomic and ensures the comfort of using the display screen 1.

[0061] Optionally, the touch buttons of the display screen are located at the lower front side of the display screen.

[0062] Specifically, touch buttons are provided at the lower front side of the display screen to facilitate touch operations for rear passengers.

[0063] exist Figure 5 In the specific embodiment shown, a row of touch buttons, such as a power button, a volume button, etc., are provided at the lower right position of the front of the display screen 1; after the front row seat backs are adjusted, the rear passengers can manually adjust the pitch angle of the display screen 1 to make it easier to touch the touch buttons. This design allows the rear passengers to easily adjust the display screen to obtain the best viewing experience.

[0064] The present application also proposes a seat for transportation equipment, the seat comprising any of the seat backs described above.

[0065] Specifically, the seat used in the vehicle includes the seat back described above, which provides the rear passengers in the vehicle with a display screen that is both ergonomic and can be freely adjusted in angle, thereby providing better comfort for the rear passengers during their journey.

[0066] Optionally, the seat back has a small table below the frame of the seat back that can be folded and stored onto the seat back.

[0067] Specifically, the upper end of the seat back is provided with a display screen with adjustable angle, and the lower end of the seat back is provided with a small foldable table, which not only makes it convenient for rear passengers to watch videos, but also provides convenience for the rear passengers.

[0068] exist Figure 5 In the specific embodiment shown, a frame 6 for placing a display screen 1 is provided at the upper end of the seat back, and a foldable small table is provided at the lower end of the seat back. The small table can be folded and stored by a knob located below the display screen 1, providing convenience for rear passengers.

[0069] It should be noted that a type of transportation equipment is not limited to airplanes, high-speed trains, trains, cars and other means of transportation.

[0070] The present application also proposes a transportation device, comprising at least two seats arranged in front and back rows, wherein the front row seat of the at least two seats arranged in front and back rows is a seat for the transportation device described in any one of the second aspects.

[0071] In a specific embodiment of the present application, in any type of transportation equipment, by installing a seat as described in any of the above contents on the front seat, the rear passengers can freely adjust the angle of the display screen, and there is no risk of screen damage, which allows the rear passengers to watch videos during the journey and effectively kill time.

[0072] In summary, the present application provides a seat back, a seat for transportation equipment, and transportation equipment; the seat back includes a frame embedded in the back, a display screen placed in the frame, and a damping shaft and an elastic pad assembled between the display screen and the frame; when the rear passengers manually adjust the pitch angle of the display screen, the display screen rotates accordingly with the damping shaft as the axis, which can not only achieve the best viewing angle for the rear passengers, but also facilitate the touch use of the display screen by the rear passengers, and through the cooperation and abutment of the elastic pad with the abutment surface on the frame, hard collision between the display screen and the seat back is avoided, thereby reducing the screen failure caused thereby.

[0073] Unless otherwise defined, all technical and scientific terms used in this application are the same as those generally understood by those skilled in the art to which this application belongs. If there is any inconsistency, the meaning described in the full text of this application or the meaning derived from the content recorded in the full text of this application shall prevail. In addition, the terms used in this description are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0074] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the technical concept of the present application, all of which belong to the protection scope of the present application.

[0075] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A seat back, characterized in that: The seat back has a frame embedded in the back; A display screen is placed in the frame; The back position of the display screen and the corresponding position of the seat back frame are rotatably connected via a damping shaft, so that the display screen can be rotated around the damping shaft as an axis to adjust the pitch angle of the display screen; Elastic pads are arranged at the top and bottom positions of the back of the display screen; and abutment surfaces are arranged on the frame at positions corresponding to the elastic pads, so that when the pitch angle of the display screen is at an initial angle and a maximum angle, the abutment surfaces at corresponding positions of the frame abut against the corresponding elastic pads.

2. The seat back according to claim 1, characterized in that: The elastic pad comprises a horizontally arranged strip rubber pad; The abutting surface is a convex step surface.

3. The seat back according to claim 2, characterized in that: A guide column is provided at the position where the frame is connected to the damping shaft device; A guide hole is provided on the first end plate where the damping shaft is connected to the frame; Through the coupling positioning of the guide hole and the guide column, the first end plate of the damping shaft is assembled at the position where the frame is connected to the damping shaft.

4. The seat back according to claim 3, characterized in that: A mounting groove is arranged at the middle position of the back of the display screen, and the damping shaft device is connected to the second end plate of the display screen and assembled in the mounting groove.

5. The seat back according to claim 4, characterized in that: The second end plate is assembled in the mounting groove by screws, and the first end plate is assembled at the position where the frame is connected to the damping shaft by screws.

6. The seat back according to claim 1, characterized in that: The damping shaft devices are a pair arranged symmetrically.

7. The seat back according to claim 1, characterized in that: The touch buttons of the display screen are located at the lower front side of the display screen.

8. A seat for transportation equipment, characterized in that: The seat comprises a seat back as described in any one of claims 1-7.

9. The seat according to claim 8, characterized in that The seat back is provided with a small table below the frame of the seat back which can be folded and stored on the seat back.

10. A transportation device comprising at least two seats arranged in front and back rows, characterized in that: The front seat of the at least two seats arranged in front and back rows is a seat for the transportation equipment according to claim 8 or 9.

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