Method for adjusting tabletop of tabletop device, and tabletop device and vehicle seat system

Abstract

A method for adjusting a tabletop (10) of a tabletop device (200), and a controller (50) and a vehicle seat system. The tabletop device (200) is disposed on the back side of a backrest (102) of a vehicle seat (100), wherein the backrest (102) is provided with a Hall electric motor (103), and the Hall electric motor (103) is used for adjusting the inclination angle of the backrest (102). The tabletop device (200) further comprises a link mechanism, a tabletop electric motor (30) and the controller (50), wherein the tabletop (10) is coupled to the backrest (102) of the vehicle seat (100) by means of the link mechanism; the tabletop electric motor (30) is configured to drive the link mechanism, such that the tabletop (10) can be switched between a stowed state and a predetermined deployed state; and the controller (50) is configured to control the tabletop electric motor (30). The method comprises: in the predetermined deployed state of the tabletop (10), the controller (50) reading a signal from the Hall electric motor (103) so as to identify the inclination angle or inclination angle change of the backrest (102) of the vehicle seat (100); the controller (50) generating a first control command on the basis of the inclination angle or inclination angle change, wherein the first control command controls the operation of the tabletop electric motor (30); and the tabletop electric motor (30) actuating the link mechanism to maintain the tabletop (10) in the predetermined deployed state by following the inclination angle of the backrest (102).

Description

Method for adjusting a tabletop device, tabletop device, and vehicle seat system Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically to a method and controller for adjusting a tabletop device, a vehicle seat system, a computer-readable storage medium, a computer program product, a tabletop device for a vehicle, and a structural component for a vehicle. Background Technology

[0002] In practice, table devices for vehicles are known, which can be mounted on the back of the vehicle seat. Some known table devices have a bracket independent of the backrest, by means of which the table can be horizontally oriented in the use position. However, such a bracket requires a certain space behind the vehicle seat in the use position of the table device, and the bracket in the use position limits the range of adjustment of the backrest angle. Some known table devices have a defined use position on the backrest, and when the backrest angle is adjusted, the table in the defined use position changes angle along with the backrest angle, deviating from the horizontal positioning. Therefore, in the case of such table devices, either the backrest angle is not adjustable, or the table device is only usable at a specific backrest angle. Summary of the Invention

[0003] The objective of this application is to provide a method and controller for adjusting the tabletop of a tabletop device, a vehicle seat system, a computer-readable storage medium, a computer program product, a tabletop device for a vehicle, and a structural component for a vehicle, thereby enabling the tabletop of the tabletop device to be held in a predetermined open state during use.

[0004] The first aspect of this application proposes a method for adjusting a tabletop device, the tabletop device being disposed on the back side of a vehicle seat backrest, the vehicle seat backrest being equipped with a Hall effect motor for driving the vehicle seat backrest to adjust the backrest tilt angle, the tabletop device further comprising a linkage mechanism, a tabletop motor, and a controller, the tabletop being coupled to the vehicle seat backrest via the linkage mechanism, the tabletop motor being configured to drive the linkage mechanism such that the tabletop can switch between a retracted state and a predetermined open state, and the controller being configured to control the tabletop motor, the method comprising:

[0005] - In the predetermined open state of the table, the controller reads the signal from the Hall motor to identify the tilt angle or change in tilt angle of the vehicle seat back; and

[0006] The controller generates a first control command based on the tilt angle or the change in tilt angle. The first control command controls the operation of the table motor. The table motor operates the linkage mechanism so that the table is kept in a predetermined open state by following the tilt angle of the backrest of the vehicle seat.

[0007] Compared with the prior art, the vehicle seat with a table device according to the method of the present invention allows for adjustment of the backrest angle within a wider range of tilt angles. At the same time, the table of the table device can be kept in a predetermined open state during use, especially in a substantially horizontal orientation, and can be substantially unaffected by the adjustment of the backrest angle.

[0008] In some embodiments, the method further includes: when the table is in a stowed state, the controller reads the signal from the Hall motor.

[0009] In some implementations, when the controller receives a command to open the table, the controller identifies the tilt angle of the vehicle seat backrest based on the signal read from the Hall motor, and determines whether the tilt angle is within a preset tilt angle range.

[0010] In some implementations, when the tilt angle is within a preset tilt angle range, the controller issues a second control command based on the tilt angle. The second control command controls the operation of the tabletop motor, and the tabletop motor manipulates the linkage mechanism to open the tabletop from the retracted state and adjust it to the predetermined open state.

[0011] In some implementations, when the tilt angle exceeds a preset tilt angle range, the controller issues a third control command that restricts the operation of the tabletop motor. This prevents situations where, when the tabletop is activated at an excessively large backrest tilt angle, the tabletop may squeeze the user (e.g., the tabletop may squeeze the user's legs), or the user's movement space may be excessively restricted by the tabletop.

[0012] In some embodiments, the method further includes: when the tilt angle exceeds a preset tilt angle range in the retracted state of the tabletop, the controller issues a fourth control command to output a first warning signal to the user of the tabletop device regarding prohibiting the activation of the tabletop device.

[0013] In some implementations, the first warning signal is output by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the user of the tabletop device.

[0014] In some implementations, the user's command to open the tabletop is received from the tabletop device via a switch or button provided with the tabletop device in a contact manner, and / or via voice interaction, eye contact, and / or gesture recognition in a non-contact manner.

[0015] In some embodiments, the switch or button provided for the table device may be located on the table, and / or on the back of the vehicle seat, and / or on the armrest device for the rear seat behind the vehicle seat, and / or on the rear door, and / or on the vehicle body.

[0016] In some embodiments, the method further includes: when the table is in the open state, if the target tilt angle of the vehicle seat back, as identified by a signal from a Hall motor read by the controller, exceeds a preset tilt angle range, the controller issues a fifth control command that restricts the operation of the Hall motor. Here, in the predetermined open state of the table, limiting the adjustment range of the vehicle seat back tilt angle (especially by allowing the front-seat occupant to adjust the backrest tilt angle) ensures the table's usability for the user of the table device (or rear-seat occupant) with improved safety and comfort.

[0017] In some embodiments, the method further includes: when the table is in the open state, and the target tilt angle of the vehicle seat backrest, as identified by the signal of the Hall motor read by the controller, exceeds a preset tilt angle range, the controller issues a sixth control command to output a second warning signal restricting or prohibiting backrest adjustment to the occupant seated on the vehicle seat.

[0018] In some embodiments, the second warning signal is output by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for an occupant seated in the vehicle. The light-emitting component mentioned herein may be located, for example, on the steering wheel, and / or on the dashboard, and / or on the front door, and / or on the vehicle body.

[0019] In some embodiments, the method further includes determining whether there is an obstacle in the movement path of the table during the table's retraction and / or during the table's opening and / or during the table's maintenance of a predetermined open state following the tilt angle of the vehicle seat backrest.

[0020] In some embodiments, the method further includes determining whether the table is subject to resistance from an obstacle during the table's retraction and / or opening and / or while the table remains in a predetermined open state following the tilt angle of the vehicle seat backrest.

[0021] In some implementations, when an obstacle is detected, the controller issues a seventh control command that restricts the operation of the tabletop motor; and / or after the obstacle is detected to have been removed, the controller issues an eighth control command that resumes the operation of the tabletop motor, allowing the tabletop to continue moving to the target position.

[0022] In some implementations, when it is determined that the tabletop is subject to resistance from an obstacle, the tabletop motor sends a stall signal to the controller, which then issues a seventh control command that restricts the operation of the tabletop motor.

[0023] In some implementations, after determining that the resistance of the obstacle has disappeared, the tabletop motor no longer sends a stall signal to the controller. The controller then issues an eighth control command, which restores the operation of the tabletop motor, allowing the tabletop to continue moving to the target position.

[0024] In some implementations, the resistance of the obstacle can be determined by the current signal of the tabletop motor, where the resistance can cause a significant increase in the current consumption of the tabletop motor. In a further embodiment, the return of the motor's current consumption from an abnormally high value to a normal value indicates that the obstacle has been removed.

[0025] In some implementations, the presence of obstacles in the movement path of the tabletop is identified and / or the removal of obstacles present in the movement path of the tabletop is identified by means of an image acquisition device.

[0026] In some embodiments, identifying the presence of an obstacle in the movement path of the tabletop and / or identifying the removal of an obstacle in the movement path of the tabletop includes: determining the resistance of the tabletop to the obstacle, wherein, when the tabletop is subjected to the resistance of the obstacle, the tabletop motor sends a stall signal to the controller.

[0027] In some embodiments, when an obstacle is determined to be present in the movement path of the tabletop, a warning signal regarding the presence of the obstacle and / or an alert signal for removing the obstacle are output to the user of the tabletop device and / or the occupant seated in the vehicle seat by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the user of the tabletop device and / or the occupant seated in the vehicle seat.

[0028] In some embodiments, the method further includes detecting, while the table is in a stowed state, the seating of a user of the table device on a rear seat behind the vehicle seat.

[0029] In some implementations, indicator lights on the tabletop are activated and / or switches or buttons on the tabletop are illuminated.

[0030] In some implementations, a predetermined open state of the tabletop is set in which the tabletop is positioned substantially horizontally.

[0031] In some embodiments, in the predetermined open state of the tabletop, the tabletop may have a predetermined tilt angle, at which a smartphone or tablet can be appropriately placed on the tabletop, allowing the user of the tabletop device to comfortably watch video files played on the smartphone or tablet, or to comfortably operate the smartphone or tablet.

[0032] In some embodiments, the tabletop motor may be configured as a Hall motor for operating a linkage mechanism.

[0033] In some embodiments, the method is implemented using a tabletop device that also has the following features: the linkage mechanism is configured as a four-bar linkage, the four-bar linkage including an upper first link and a lower second link, a first end of each of the first link and the second link being connected to the backrest of a vehicle seat, and a second end of each of the first link and the second link being connected to the tabletop.

[0034] In some embodiments, the tabletop motor is in a transmission connection with the second link.

[0035] In some embodiments, the four-bar linkage includes a pair of first links arranged side by side and a pair of second links arranged side by side.

[0036] In some embodiments, the tabletop motor is in a transmission connection with the pair of second linkages.

[0037] In some embodiments, the tabletop device includes a synchronizing member that causes the pair of second links to move synchronously, and the synchronizing member can be driven by a tabletop motor.

[0038] In some embodiments, the synchronizing member is configured as a rotating shaft, which is torsionally connected to the first ends of each of the pair of second connecting rods, and the tabletop motor is in a transmission connection with the rotating shaft.

[0039] In some embodiments, the tabletop device includes a mounting bracket connected to the first ends of the first link and the second link, respectively.

[0040] In some embodiments, the vehicle seat further includes a base plate to which the mounting bracket is mounted.

[0041] In some embodiments, the tabletop device includes a toothed plate that is anti-torsional connected to a rotating shaft, the toothed plate having a toothed sector, and the tabletop motor having an output gear that meshes with the toothed sector.

[0042] In some embodiments, the tabletop device includes a first motor mounting plate and a second motor mounting plate, which are fitted onto the rotating shaft and disposed on both sides of the toothed plate. The first motor mounting plate is adjacent to the tabletop motor, and the output shaft of the tabletop motor with an output gear passes through the first motor mounting plate, and the free end of the output shaft is supported by the second motor mounting plate.

[0043] In some embodiments, the second motor mounting plate includes a bottom section, two opposing side legs bent from the bottom section, and abutment sections bent outward from the two side legs, the second mounting plate abutting against the first motor mounting plate with each abutment section, and the free end of the output shaft being supported by the bottom section of the second motor mounting plate.

[0044] In some embodiments, the tabletop device includes a spring mounted on a pivot shaft that preloads the pivot shaft to eliminate meshing backlash between the output gear and the sector gear.

[0045] In some embodiments, the shaft has follower fingers that extend into a positioning window that limits the range of motion of the follower fingers and thus limits the range of rotation of the shaft.

[0046] In some embodiments, the vehicle seat further includes a base plate to which the table motor is mounted, and the base plate has the positioning window.

[0047] In some embodiments, the tabletop motor is mounted above the rotating shaft, and the tabletop motor has a push mechanism coupled to the rotating shaft, which pushes and pulls to rotate the rotating shaft.

[0048] In some embodiments, the tabletop electric mechanism is a lead screw motor, which includes a lead screw and nut mechanism as the actuating mechanism.

[0049] In some embodiments, the lead screw and nut mechanism includes a lead screw that can be driven to rotate and a nut or threaded sleeve that engages with the lead screw. The lead screw motor is mounted to be rotatable about a first pivot axis, and the nut or threaded sleeve is rotatably connected to the pivot axis about a second pivot axis parallel to the first pivot axis.

[0050] In some embodiments, the tabletop device includes a U-shaped first motor bracket and a U-shaped second motor bracket, one side plate of the second motor bracket having a pair of flanges on opposite edges of the side plate, each flange being connected to a side plate of the first motor bracket such that the second motor bracket is rotatable relative to the first motor bracket about a first pivot axis, and the tabletop motor is mounted in the second motor bracket.

[0051] In some embodiments, the tabletop device includes a pair of mounting brackets and a support rod or support tube welded between the pair of mounting brackets, on which the first motor bracket is welded.

[0052] In some embodiments, the tabletop device has a pair of drive rods fixedly connected to the pivot, and the nut or threaded sleeve is rotatably connected to the pair of drive rods about a second pivot axis.

[0053] In some embodiments, when the tabletop is in the retracted state, the first link contacts the first end of the second link; and / or in the maximum open position of the tabletop assembly, the first link contacts the second end of the second link.

[0054] A second aspect of the invention proposes a controller for adjusting a tabletop device, the tabletop device being disposed on the back side of a vehicle seat backrest, the tabletop device including a linkage mechanism and a tabletop motor, the tabletop being coupled to the vehicle seat backrest via the linkage mechanism, the tabletop motor being configured to drive the linkage mechanism, the vehicle seat backrest being equipped with a Hall effect motor for driving the vehicle seat backrest to adjust the backrest tilt angle, wherein the controller is configured to control the tabletop motor such that the tabletop can switch between a retracted state and a predetermined open state, and the controller is further configured to:

[0055] - In the pre-defined open state of the table, the signal from the Hall motor is read to identify the tilt angle or change in tilt of the vehicle seat back; and

[0056] - A first control command is generated based on the tilt angle or the change in tilt angle. The first control command controls the operation of the table motor. The table motor operates the linkage mechanism so that the table is kept in a predetermined open state in a manner that follows the tilt angle of the backrest of the vehicle seat.

[0057] In some implementations, the controller is integrated into the tabletop motor, or is connected to the tabletop motor as a separate control unit.

[0058] In some embodiments, the controller is configured to implement the method according to the invention.

[0059] A third aspect of the invention proposes a vehicle seat system comprising:

[0060] - A vehicle seat having an adjustable backrest and equipped with a Hall motor for driving the backrest of the vehicle seat to adjust the backrest angle.

[0061] - A table assembly, disposed on the back side of a vehicle seat backrest, the table assembly including a table, a linkage mechanism, and a table motor, the linkage mechanism being coupled to the table, and the table motor being configured to drive the linkage mechanism; and

[0062] - The controller according to the present invention.

[0063] In some implementations, the vehicle seat is a driver's seat or a front passenger seat.

[0064] In some implementations, the vehicle seat is a zero-gravity seat.

[0065] In some embodiments, the vehicle having the vehicle seats may be a passenger car with two rows of seats.

[0066] A fourth aspect of the invention proposes a computer-readable storage medium on which a computer program is stored, the computer program being configured to, when executed on a processor, cause the implementation of the method according to the invention.

[0067] A fifth aspect of the invention proposes a computer program product comprising a computer program configured to, when executed on a processor, cause the implementation of the method according to the invention.

[0068] Computer-readable storage media can be processors or computer-readable programs that encode executable instructions. The instructions execute or cause the execution of some or all of the actions described above. Storage media can include digital memory, magnetic storage media such as disks and tapes, hard disks, or optically readable digital data storage media. Other examples may also cover computers, processors, or control units programmed to perform the actions described above; or field-programmable logic arrays (FPLAs, PLAs) or field-programmable gate arrays (FPGAs, PGAs) programmed to perform the actions described above.

[0069] A controller can include a single, dedicated controller, or alternatively, multiple control units in a distributed configuration. Controllers are not limited to hardware capable only of executing software; they can include digital signal processor (DSP) hardware, network processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and so on.

[0070] A sixth aspect of the invention proposes a table device for a vehicle, the table device including a table, characterized in that the table device further includes a linkage mechanism, a table motor and a controller, the linkage mechanism being coupled to the table, the table motor being configured to drive the linkage mechanism, and the controller being configured to control the table motor such that the table can be switched between a retracted state and a predetermined open state by the table motor controlled by the controller.

[0071] In some embodiments, the tabletop device is configured to be mounted on a tilt-adjustable vehicle component that can be driven by a Hall motor, and the controller is configured to be signal-connected to the Hall motor to control the tabletop motor to drive the tabletop to adjust to a predetermined open state based on the tilt angle of the vehicle component obtained from the Hall motor.

[0072] In some embodiments, the vehicle component is configured as an adjustable backrest for a vehicle seat, the vehicle seat being equipped with the Hall motor.

[0073] In some embodiments, the linkage mechanism is configured as a four-bar linkage, which includes an upper first link and a lower second link, each having a first end configured for connection to a vehicle component, and each having a second end connected to a table.

[0074] In some embodiments, the tabletop motor is in a transmission connection with the second link.

[0075] In some embodiments, the four-bar linkage includes a pair of first links arranged side by side and a pair of second links arranged side by side.

[0076] In some embodiments, the tabletop motor is in a transmission connection with the pair of second linkages.

[0077] In some embodiments, the tabletop device includes a synchronizing member that causes the pair of second links to move synchronously, and the synchronizing member can be driven by a tabletop motor.

[0078] In some embodiments, the synchronizing member is configured as a rotating shaft, which is torsionally connected to the first ends of each of the pair of second connecting rods, and the tabletop motor is in a transmission connection with the rotating shaft.

[0079] In some embodiments, the tabletop device includes a mounting bracket connected to the first ends of the first link and the second link, respectively.

[0080] In some embodiments, the vehicle component further includes a base plate to which the mounting bracket is mounted.

[0081] In some embodiments, the tabletop device includes a toothed plate that is anti-torsional connected to a rotating shaft, the toothed plate having a toothed sector, and the tabletop motor having an output gear that meshes with the toothed sector.

[0082] In some embodiments, the tabletop device includes a first motor mounting plate and a second motor mounting plate, which are fitted onto the rotating shaft and disposed on both sides of the toothed plate. The first motor mounting plate is adjacent to the tabletop motor, and the output shaft of the tabletop motor with an output gear passes through the first motor mounting plate, and the free end of the output shaft is supported by the second motor mounting plate.

[0083] In some embodiments, the second motor mounting plate includes a bottom section, two opposing side legs bent from the bottom section, and abutment sections bent outward from the two side legs, the second motor mounting plate abutting against the first motor mounting plate with each abutment section, and the free end of the output shaft being supported by the bottom section of the second motor mounting plate.

[0084] In some embodiments, the tabletop device includes a spring mounted on a pivot shaft that preloads the pivot shaft to eliminate meshing backlash between the output gear and the sector gear.

[0085] In some embodiments, the shaft has follower fingers that extend into a positioning window that limits the range of motion of the follower fingers and thus limits the range of rotation of the shaft.

[0086] In some embodiments, the vehicle component further includes a base plate to which the table motor is mounted, and the base plate has the positioning window.

[0087] In some embodiments, the tabletop motor is mounted above the rotating shaft, and the tabletop motor has a push mechanism coupled to the rotating shaft, which pushes and pulls to rotate the rotating shaft.

[0088] In some embodiments, the tabletop electric mechanism is a lead screw motor, which includes a lead screw and nut mechanism as the actuating mechanism.

[0089] In some embodiments, the lead screw and nut mechanism includes a lead screw that can be driven to rotate and a nut or threaded sleeve that engages with the lead screw. The lead screw motor is mounted to be rotatable about a first pivot axis, and the nut or threaded sleeve is rotatably connected to the pivot axis about a second pivot axis parallel to the first pivot axis.

[0090] In some embodiments, the tabletop device includes a U-shaped first motor bracket and a U-shaped second motor bracket, one side plate of the second motor bracket having a pair of flanges on opposite edges of the side plate, each flange being connected to a side plate of the first motor bracket such that the second motor bracket is rotatable relative to the first motor bracket about a first pivot axis, and the tabletop motor is mounted in the second motor bracket.

[0091] In some embodiments, the tabletop device includes a pair of mounting brackets and a support rod or support tube welded between the pair of mounting brackets, on which the first motor bracket is welded.

[0092] In some embodiments, the tabletop device has a pair of drive rods fixedly connected to the pivot, and the nut or threaded sleeve is rotatably connected to the pair of drive rods about a second pivot axis.

[0093] In some embodiments, when the tabletop device is in the retracted state, the first link contacts the first end of the second link; and / or in the maximum open position of the tabletop device, the first link contacts the second end of the second link.

[0094] In some embodiments, the tabletop is positioned horizontally in a predetermined open state.

[0095] In some embodiments, the tabletop electrical mechanism becomes a Hall motor for manipulating the linkage mechanism.

[0096] A seventh aspect of the invention proposes a structural assembly for a vehicle, the structural assembly including a table device for a vehicle according to a sixth aspect of the invention.

[0097] A sixth aspect of the invention proposes that the structural assembly include a vehicle seat, the table device being mounted to the back of the vehicle seat, and the vehicle seat being equipped with a Hall motor for adjusting the tilt angle of the vehicle seat back.

[0098] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0099] The invention will now be described in more detail with reference to the accompanying drawings and exemplary embodiments. A brief description of the drawings is as follows:

[0100] Figure 1 is a flowchart of a first embodiment of a method for operating a tabletop device.

[0101] Figure 2 is a flowchart of a second embodiment of a method for operating a tabletop device.

[0102] Figure 3 is a schematic diagram of a vehicle according to an embodiment of the present invention.

[0103] Figure 4 is a schematic diagram of a vehicle seat including a table device according to a first embodiment of the present invention, wherein the vehicle seat is in the designed position and the table is in the retracted state.

[0104] Figure 5 is a schematic diagram of the vehicle seat in Figure 4, wherein the vehicle seat is in the designed position and the table of the table device is in a horizontal open state.

[0105] Figure 6 is a schematic diagram of the vehicle seat in Figure 4, wherein the backrest of the vehicle seat is adjusted backward from the designed position, and the table of the table device is in a horizontal open state.

[0106] Figure 7 is a schematic diagram of the vehicle seat in Figure 4, wherein the backrest of the vehicle seat is adjusted forward from the designed position, and the table of the table device is in a horizontal open state.

[0107] Figures 8 and 9 are partial views of the frame of the backrest of the vehicle seat and the frame of the table device in Figure 4, viewed from the front and rear, respectively.

[0108] Figures 10 to 12 are side views of the frame of the backrest and the frame of the table device of the vehicle seat in Figure 4, wherein the backrest has different tilt angles and the table of the table device is in a horizontal open state.

[0109] Figure 13 is an assembly diagram of the tabletop device according to the first embodiment.

[0110] Figure 14 is an exploded view of the tabletop device in Figure 13.

[0111] Figure 15 is an exploded view of a portion of the tabletop assembly in Figure 13.

[0112] Figure 16 is a perspective view of a structural unit of the tabletop device in Figure 13.

[0113] Figure 17 is an exploded view of the structural unit in Figure 16.

[0114] Figure 18 is a partial perspective view of a vehicle seat including a table device according to a second embodiment of the present invention, wherein the table (not shown) is in a stowed state.

[0115] Figure 19 is an assembly diagram of the tabletop device in Figure 18.

[0116] Figure 20 is an assembly diagram of the tabletop device of Figure 18, wherein the tabletop of the tabletop device is not shown.

[0117] Figure 21 is an exploded view of the tabletop device in Figure 20.

[0118] Figure 22 is an exploded view of a portion of the tabletop assembly in Figure 21.

[0119] Figures 23 and 24 are simplified kinematic diagrams of the tabletop device of Figure 18 in the retracted state and in the horizontally open state. Detailed Implementation

[0120] Several exemplary embodiments will now be described more fully with reference to the accompanying drawings. It should be understood that elements not essential for understanding the invention may be omitted from the drawings for ease of illustration and understanding. In the drawings, the same reference numerals may denote the same parts or parts that function identically. Numerous specific details, such as examples of specific parts, devices, and methods, are set forth in the following description to provide a thorough understanding of embodiments of this disclosure. It will be apparent to those skilled in the art that not all of these specific details are necessarily required. The exemplary embodiments should not be construed as limiting.

[0121] Figure 1 is a flowchart of a first embodiment of the method for operating the tabletop device 200, and Figure 2 is a flowchart of a second embodiment of the method for operating the tabletop device 200. The methods shown in Figure 1 and Figure 2 can be implemented separately or in combination, for example, in the vehicle described in Figure 3.

[0122] Figure 3 illustrates a vehicle configured as a passenger car with two rows of seats. The vehicle has a front seat 100, which can be a driver's seat or a front passenger seat. The vehicle also has rear seats 300 behind the front seats 100. A Hall effect motor 103 (see Figure 8) is provided on the backrest 102 of the front seats 100. The Hall effect motor 103 is used to drive the backrest 102 of the front seats 100 to adjust the tilt angle of the backrest 102. A table device 200 is provided on the back side of the backrest 102 of the front seats 100. The table device 200 includes a table 10, a linkage mechanism, a table motor, and a controller. The table 10 is coupled to the backrest of the front seats 100 via the linkage mechanism. The table motor is configured to drive the linkage mechanism so that the table 10 can switch between a retracted state and a predetermined open state. The controller is configured to control the table motor. The table device 200 will be described in more detail below.

[0123] Now, referring to FIG1, a first embodiment of the method for operating the table device 200 is described. The method begins in step S0, wherein the table 10 of the table device 200 is in a retracted state. For example, the method can begin when the rear door of the vehicle is opened from the outside. In step S1, the occupancy of the rear seat 300 is detected. The occupant of the rear seat 300 may be a user of the table device 200. The occupancy of the rear seat 300 can be achieved by means of a camera system and image recognition technology in the vehicle. As shown in FIG3, by means of camera 310, and optionally also by means of camera 320, the occupancy of the occupant in the rear seat 300 can be determined. Alternatively or supplemented, the occupancy of the rear seat 300 can be achieved by means of a sensor device disposed in the seat cushion of the rear seat, the sensor device may include a sensor array. When the occupant is seated in the rear seat 300, the occupant applies pressure to the sensor array. Upon confirmation that the rear seat 300 is occupied, an indicator light for the table device 200 can be activated in step S2. Typically, the indicator light can be located on the table 10. Alternatively or additionally, the indicator light can also be located on the back of the vehicle seat 100; and / or on the armrest of the rear seat 300. Advantageously, the indicator light can illuminate the start switch or button of the table device 200. Illumination of the indicator light makes the table device 200 easily noticeable to the user. Furthermore, even in dark environments, the user of the table device 200 can easily locate the start switch or button.

[0124] In step S3, a tabletop activation command can be received. In an advantageous embodiment, a tabletop activation command can be generated by pressing and holding a start switch or button on the tabletop 10 to activate the tabletop device 200. Alternatively or supplementarily, the user of the tabletop device 200 can generate the tabletop activation command in a contactless manner, such as by means of voice interaction, eye contact, and / or gesture recognition.

[0125] In step S4, the controller 50 can read the signal from the Hall motor 103 that drives the backrest 102 of the vehicle seat 100, wherein the tilt angle of the backrest 102 of the vehicle seat 100 is identified based on the signal from the Hall motor 102 read by the controller 50. In some embodiments, the controller 50 may be directly signal-connected to the Hall motor 102 and thus directly read the signal from the Hall motor 102. In other embodiments, the controller 50 and the Hall motor 102 are connected to a domain controller, and the controller 50 may indirectly read the signal from the Hall motor 102 through the domain controller.

[0126] Next, in step S5, it can be determined whether the tilt angle of the backrest 102 of the vehicle seat 100 is within a predetermined tilt angle range, wherein the tilt angle identified by the signal of the Hall motor 103 is compared with the predetermined tilt angle range. It is understood that in the retracted state of the table, the backrest 102 of the vehicle seat 100 can be adjusted within the complete tilt angle range. For example, if the vehicle seat 100 is configured as a zero-gravity seat, a roughly flat tilt angle of the backrest is also possible. In the open state of the table, the adjustment range of the tilt angle of the backrest 102 of the vehicle seat 100 is limited to prevent the user of the table device, or the occupant in the rear seat 300, from being disturbed by the table device.

[0127] If the reclining angle of the backrest 102 is within a predetermined reclining angle range, then in step S6, the controller 50 can control the table motor 30 to open the table 10 from the folded state to the predetermined open state. Conversely, if the reclining angle of the backrest 102 exceeds the predetermined reclining angle range, in step S7, the activation of the table device 200 can be prevented, and a warning signal can be issued to the user of the table device 200. This warning signal can be output by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the user of the table device 200. The light-emitting component can be provided on the table 10. Alternatively, the light-emitting component can also be provided on the armrest of the rear seat 300 or on the rear door.

[0128] Following step S6, in step S9, during the opening process of the tabletop 10 from a retracted state to a predetermined open state, obstacles can be detected to determine whether any obstacle is hindering the opening process of the tabletop 10. In some embodiments, obstacle detection can be achieved by means of a camera 310, which captures an image of an area near the tabletop device 200 and identifies the presence of obstacles using image recognition technology. Alternatively or supplementarily, the resistance exerted by the obstacle to opening the tabletop 10 can be determined by the current signal of the tabletop motor 30, where the resistance of the obstacle can cause a significant increase in the current consumption of the tabletop motor 30. If an obstacle is identified, the operation of the tabletop motor 30 can be paused. When an obstacle is detected in the movement path of the table 10, a warning signal regarding the presence of the obstacle and / or a reminder signal for removing the obstacle are output to the user of the table device 200 (a rear seat occupant) and / or the occupant seated on the vehicle seat 100, via a light-emitting component and / or an acoustic alarm device and / or a graphic display device. After the obstacle is removed, the table motor 30 can resume operation to drive the table 10 from the retracted state to a predetermined open state. If there is no obstacle, the table motor 30 can remain running in step S11 until the table 10 reaches the predetermined open state.

[0129] Figure 2 is a flowchart of a second embodiment of the method for operating the table device 200. The method begins in step S20, wherein the table 10 of the table device 200 is in a predetermined open state. For example, the method can begin when the front door of a vehicle is opened.

[0130] In step S21, the occupancy of the vehicle seat 100 can be detected. The occupancy of the vehicle seat 100 can be achieved using a camera system and image recognition technology within the vehicle. As shown in Figure 3, the occupancy of the occupant in the vehicle seat 100 can be determined using camera 320. Alternatively or supplementarily, the occupancy of the vehicle seat 100 can be achieved using a sensor device disposed in the seat cushion of the vehicle seat 100, which may include a sensor array. When the occupant sits in the vehicle seat 100, the occupant applies pressure to the sensor array.

[0131] In step S22, with the table 10 in a predetermined open state, the controller 50 reads the signal from the Hall motor 103 to identify the tilt angle or tilt angle change of the backrest 102 of the vehicle seat 100. Next, in step S23, it is determined whether the target tilt angle of the backrest 102, identified based on the signal from the Hall motor 103, is within a preset tilt angle range while the table 10 is in the open state. If so, in step S24, the controller 50 can control the table motor 30 so that the table 10 remains in the predetermined open state in a manner that follows the tilt angle of the backrest 102 of the vehicle seat 100. If not, in step S25, the controller 50 can issue a control command that restricts the operation of the Hall motor 103 of the vehicle seat 100, specifically prohibiting the operation of the Hall motor 103. Here, in the predetermined open state of the table 10, by limiting the adjustment range of the reclining angle of the backrest 102 of the vehicle seat 100, the usability of the table 10 for the user of the table device 200 (or the occupant of the rear seat 300) can be achieved with improved safety and comfort. Simultaneously, a warning signal can be issued to the occupant of the vehicle seat 100 in step S26. For this purpose, the warning signal is output by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the occupant of the vehicle seat 100. This light-emitting component can, for example, be provided on the steering wheel 330. Alternatively or supplementarily, the light-emitting component can also be provided on the dashboard, and / or on the front door, and / or on the vehicle body.

[0132] In one exemplary application, the backrest 102 of the vehicle seat 100 can be operated by the occupant of the vehicle seat 100, and the table device 200 can be operated by the occupant of the rear seat 300. When the vehicle seat 100 is unoccupied and the rear seat 300 is occupied, the backrest 102 of the vehicle seat 100 has a constant tilt angle, and the table 10 of the table device 200 can be adjusted from an open state to a predetermined open state according to this tilt angle. When not only the vehicle seat 100 is occupied but also the rear seat 300 is occupied, the tilt angle of the backrest 102 of the vehicle seat 100 can, in principle, be adjusted at any time. On the one hand, the table 10 of the table device 200 can be adjusted from an open state to a predetermined open state according to the tilt angle of the backrest 102 when the table device 200 is activated. On the other hand, the range of adjustment of the recline angle of the backrest 102 of the vehicle seat 100 is limited, and when the recline angle of the backrest 102 is adjusted, the table motor 30 is operated accordingly according to the change in the recline angle of the backrest 102, so that the table 10 is kept in the predetermined open state, so that the table 10 can always be comfortably used by the occupants of the rear seat 300.

[0133] In another exemplary application, when the vehicle seat 100 is unoccupied and the rear seat 300 is occupied, not only the table device 200 but also the backrest 102 of the vehicle seat 100 can be operated by the occupant of the rear seat 300. In the predetermined open state of the table 10, when the user of the table device 200, or the occupant of the rear seat 300, manipulates the Hall motor 103 of the vehicle seat 100 to adjust the backrest 102 to a desired tilt angle, the controller 50 can control the table motor 30 according to the tilt angle so that the table 10 remains in the predetermined open state.

[0134] An exemplary embodiment of the table device 200 and a vehicle seat 100 having the table device 200 will be described in more detail below with reference to the accompanying drawings.

[0135] Figures 4 to 7 illustrate a vehicle seat 100 according to a first embodiment of the present invention. The vehicle seat 100 includes a seat portion 101 and a backrest 102, and includes a table device 200 according to the first embodiment of the present invention, which is directly mounted on the back side of the backrest 102. In the state shown in Figure 4, the vehicle seat 100 is in a designed position, with the backrest 102 having a predetermined tilt angle, for example, approximately 15° rearward relative to the vertical. In this designed position, a user, such as a driver or a passenger in the front passenger seat, can comfortably sit in the vehicle seat 100 and focus on the vehicle's surroundings or traffic conditions. Here, the table of the table device 200 is in a retracted state, and the visible side of the table 10 of the table device 200 is substantially coplanar with the back side of the backrest 102. In the state shown in Figure 5, the vehicle seat 100 remains in its designed position, but the table 10 of the table device 200 has now been adjusted from a retracted state to a horizontally open state, where the table 10 is positioned approximately horizontally. Users behind the vehicle seat 100, such as occupants in the rear seats, can use the table device 200 to place a laptop or tablet on the table 10. In the state shown in Figure 6, the backrest of the vehicle seat 100 is adjusted backward from its designed position, for example, at an angle of approximately 30° relative to the vertical. Through the adjustment of the table device 200, especially the automatic adaptive adjustment, the table 10 of the table device 200 remains in the horizontally open state. In the state shown in Figure 7, the backrest of the vehicle seat 100 is adjusted forward from its designed position, for example, at an angle of approximately 0° relative to the vertical. Similarly, through the adjustment of the table device 200, especially the automatic adaptive adjustment, the table 10 of the table device 200 also remains in the horizontally open state. As clearly seen in Figures 5 to 7, when the reclining angle of the backrest 102 of the vehicle seat 100 is adjusted, the table 10 of the table device 200 can remain in a horizontally open state through the corresponding adjustment of the table device 200, especially the automatic adaptive adjustment. Corresponding to Figures 5 to 7, Figures 10 to 12 show the side views of the frame of the backrest 102 of the vehicle seat 100 and the frame of the table device 200 of Figure 4, respectively, where the backrest 102 has different reclining angles and the table 10 of the table device 200 is always in a horizontally open state.

[0136] In the context of this invention, "horizontal open state" can be understood as a predetermined substantially horizontal orientation of the tabletop. For example, in some designs, depending on actual needs, the edge of the tabletop 10 facing the user may be slightly raised relative to the edge of the tabletop 10 facing the vehicle seat, in order to help prevent objects placed on the tabletop 10 from slipping towards the user.

[0137] In some application scenarios, instead of the basically horizontal positioning of the tabletop, it is also possible that the tabletop 10 can have a predetermined tilt angle in a predetermined open state, in which case a smartphone or tablet can be appropriately placed on the tabletop 10, and the user can comfortably watch video files played on the smartphone or tablet, or comfortably operate the smartphone or tablet.

[0138] As shown in Figures 8 to 14, the table device 200 includes a linkage mechanism, a table motor 30, and a controller 50. The linkage mechanism is coupled to the table 10. The table motor 30 is configured to drive the linkage mechanism, and the controller 50 is configured to control the table motor 30 so that when the table of the table device 200 is in the open state and the tilt angle of the backrest 102 of the vehicle seat 100 is adjusted, the table device 200 is adjusted to maintain the approximate horizontal positioning of the table 10. In the retracted state of the table 10, the linkage mechanism occupies a first posture. In the horizontally open state of the table 10, the linkage mechanism occupies a different posture than the first posture. The table motor 30 can be any type of motor in principle, but a Hall effect motor is preferred.

[0139] Here, controller 50 can be configured as a separate control unit. Alternatively, controller 50 can also be integrated into tabletop motor 30. Alternatively, controller 50 can also be integrated into a controller (not shown) of vehicle seat 100. It is particularly advantageous that controller 50 can be in a signal connection with Hall motor 103, as will be described in more detail below. The signal connection between controller 50 and Hall motor 103 can be implemented in various forms, such as direct connection, connection via CAN bus, or connection within the vehicle's domain control system.

[0140] Here, the linkage mechanism can be configured as a four-bar linkage 20. The four-bar linkage 20 includes a first link 21 located above and a second link 22 located below. A first end 21a, 22a of each of the first link 21 and the second link 22 is connected to the backrest 102 of the vehicle seat 100, and a second end 21b, 22b of each of the first link 21 and the second link 22 is connected to the table 10. In the exemplary embodiment shown, the four-bar linkage 20 includes a pair of first links 21 arranged side-by-side and a pair of second links 22 arranged side-by-side. However, it is also possible to provide only one unique first link 21 and one unique second link; or to provide three or more side-by-side first links 21 and three or more side-by-side second links 22. The number of first links 21 and the number of second links 22 can be the same or different from each other.

[0141] In an advantageous embodiment, as shown in FIG14, a substrate 104 and a pair of mounting brackets 23 may be provided, the pair of mounting brackets 23 being fastened to the substrate 104 by fastening elements. Each mounting bracket 23 mates with a first link 21 and a second link 22, wherein each mounting bracket 23 is connected to a first end 21a of the corresponding first link 21 and a first end 22a of the corresponding second link 22. In an alternative embodiment (not shown), the mounting bracket may be integrated with the substrate as a single component, wherein the integrated substrate may have a connecting plate that functions similarly to the aforementioned mounting bracket. In another alternative embodiment (not shown), a single, generally U-shaped, integrated mounting bracket may be provided, which can be mounted to the substrate 104. The two legs of the integrated mounting assembly can function similarly to the pair of mounting brackets 23 described above.

[0142] A pair of second links 22 can be interconnected by a synchronizing member, enabling them to move synchronously. Here, the synchronizing member is a rotating shaft 40, which is torsionally connected to the first ends 22a of each of the second links 22. A tabletop motor 30 is connected to the rotating shaft 40 in a transmission relationship. The tabletop motor 30 can be mounted to the base plate 104. The tabletop motor 30 has an output gear 34 that meshes with a gear sector 41 torsionally mounted on the rotating shaft 40. Through the meshing of the output gear 34 and the gear sector 41, the tabletop motor 30 can drive the rotating shaft 40 to rotate, thereby synchronously driving the pair of second links 22. A first motor mounting plate 31 and a second motor mounting plate 32 can be fitted onto the rotating shaft 40 and are disposed on both sides of the gear plate 41. The first motor mounting plate 31 is adjacent to the tabletop motor 30. The first motor mounting plate 31 and the second motor mounting plate 32 can be fastened to the flange plate 33 of the tabletop motor 30 by fastening devices such as threaded connection devices 38 including bolts 38a and nuts 38b. The output shaft of the tabletop motor 30, having an output gear 34, passes through the first motor mounting plate 31, and the free end of the output shaft is supported by the second motor mounting plate 32. The tabletop motor 30 may also include a locating pin 39, which can pass through corresponding locating holes in the first motor mounting plate 31 and the second motor mounting plate 32. The locating pin 39 may have threads on its free end, and a mating nut 39a can be tightened onto the threads of the locating pin 39 from the side of the second motor mounting plate 32 opposite to the tabletop motor 30. The second motor mounting plate 32 may include a bottom section 32a, two opposing side legs 32b bent from the bottom section 32a toward the first motor mounting plate 31, and abutment sections 32c bent outward from the two side legs 32b respectively. The second motor mounting plate 32 abuts against the first motor mounting plate 31 with two abutment sections 32c. The free end of the output shaft of the tabletop motor 30 is supported by the bottom section 32a of the second motor mounting plate 32, and the output gear 34 of the tabletop motor 30 is received in the receiving space enclosed by the first motor mounting plate 31 and the second motor mounting plate 32.

[0143] At least one spring 35, such as two helical torsion springs, can be provided on the rotating shaft 40 to preload the rotating shaft 40 and eliminate meshing backlash between the output gear 34 and the sector gear 41 of the tabletop motor 30. A corresponding retaining member 36 can be provided on the rotating shaft 40 for the spring 35, one end of which can be fixed to the retaining member 36, and the other end of which can be fixed, for example, to the base plate 104. The rotating shaft 40 can be provided with a limiting mechanism to limit the rotational angle range of the rotating shaft 40, and thus limit the range of motion of the tabletop 10 of the tabletop device 200. In the illustrated embodiment, the rotating shaft 40 can have a follower finger 37 that extends into a positioning window 105, which limits the range of motion of the follower finger 37 and thus limits the rotational angle range of the rotating shaft 40. The positioning window 105 can advantageously be provided in the base plate 104.

[0144] In a particularly advantageous embodiment, as shown in FIG8, the vehicle seat 100 may be equipped with a Hall motor 103. The Hall motor 103 is configured to drive the vehicle seat 100, particularly the backrest 102, for adjusting the tilt angle of the vehicle seat 100, especially the tilt angle of the backrest 102. The controller 50 of the table device 200 may be signal-connected to the Hall motor 103 to acquire the signal wave of the Hall motor 103 when adjusting the tilt angle of the vehicle seat 100 by the Hall motor 103, thereby obtaining the current tilt angle of the backrest 102 of the vehicle seat 100, and subsequently controlling the table motor 30 when using the table device 200 so that the table 10 of the table device 200 reaches or remains in a substantially horizontal open state. By utilizing the electrical signal of the Hall motor 103, a separate tilt sensor can be eliminated.

[0145] Referring to Figures 14 and 15, some details of the tabletop assembly 200 are illustrated. The tabletop 10 of the tabletop assembly 200 may include a tabletop frame 13, an upper cover plate 11, and a lower cover plate 12. The upper cover plate 11 and the lower cover plate 12 can be connected to each other, sandwiching the tabletop frame 13 between the upper cover plate 11 and the lower cover plate 12. A first connecting rod 21 and a second connecting rod 22 are respectively hinged to the tabletop frame 13 at their second ends 21b and 22b. The first connecting rod 21 and the second connecting rod 22 are respectively hinged to the mounting bracket 23 and the tabletop frame 13 at their respective ends via corresponding connecting devices 26.

[0146] A smart panel assembly 14 (see Figure 14) may be provided in the tabletop 10. For this purpose, wires 25 for power supply and signal transmission (see Figure 15) are guided from the backrest 102 of the vehicle seat 200 to the smart panel assembly 14 in the tabletop 10 via a guide slot in the second link 22. The guide slot in the second link 22 can be closed by a corresponding closing plate 24. Through the smart panel assembly 14, information and / or control buttons can be displayed on the visible surface of the lower cover 12 of the tabletop 10 facing the user when the tabletop 10 of the tabletop device 200 is in the retracted state. For example, weather forecasts, buttons for playing, controlling, and adjusting a radio or multimedia player, and prompts related to the use of the tabletop device 200 may be displayed, etc.

[0147] The tabletop device 200 according to the first embodiment has the following advantages: the tabletop motor 30 can be arranged close to the rotating shaft 40, and no special transmission mechanism is required between the tabletop motor 30 and the rotating shaft 40; direct transmission can be achieved between the output gear 34 of the tabletop motor 30 and the gear sector 41 of the rotating shaft 40. The entire tabletop device 200 can have a compact structure and a small number of parts. It is possible that the tabletop motor 30 and the rotating shaft 40 can be pre-assembled as a single structural unit.

[0148] Next, a vehicle seat 100 according to a second embodiment of the present invention will be described with reference to Figures 18 to 24, which includes a table device 200 according to a second embodiment of the present invention. Here, the vehicle seat 100 also includes a headrest 106 disposed above a backrest 102, which forms a structural unit. The frame of the backrest 102 includes an upper crossbeam 107 and two side panels 108, the crossbeam 107 being fixedly connected to the two side panels, particularly welded to each other. A support rod for the headrest 106 is mounted on the crossbeam 107. A recess is provided in the upper section of the backrest 102 on the back side of the backrest and adjacent to the crossbeam 107. The main difference between the table device according to the second embodiment and the table device according to the first embodiment lies in the drive system. For simplicity, the differences between the table device according to the second embodiment and the table device according to the first embodiment will be mainly described below. For other aspects of the table device according to the second embodiment that are the same as or similar to those of the table device according to the first embodiment, reference can be made to the detailed description of the table device according to the first embodiment above.

[0149] In the table device 200 according to the second embodiment, the table 10 and the four-bar linkage 20 can be configured in the same or similar manner as in the first embodiment. The components of the vehicle seat 100, excluding the table device 200, can also be configured in the same or similar manner as in the first embodiment. Therefore, the controller 50 of the table device 200 is also in signal connection with the Hall motor 103 of the vehicle seat 100.

[0150] In the second embodiment, the tabletop motor 30 is mounted above the rotating shaft 40, which also serves as a synchronizing member to connect the first ends 22a of a pair of second connecting rods 22. Here, the tabletop motor 30 is configured as a lead screw motor, which includes a lead screw and nut mechanism 60 as a driving mechanism. By pushing and pulling the driving mechanism, the tabletop motor 30 can cause the rotating shaft 40 to rotate in two opposite directions of rotation. The lead screw and nut mechanism 60 includes a lead screw 61 that can be driven to rotate and a nut 62 that engages with the lead screw 61. Instead of the nut 62, a threaded sleeve may also be used. The tabletop device 200 may have a pair of drive rods 42 fixedly connected to the rotating shaft 40, and the nut 62 is rotatably connected to the pair of drive rods 42. As shown in Figures 18 to 20, in the retracted state of the tabletop 10, the pair of drive rods 42 extend upward from the rotating shaft 40 and away from the tabletop 10.

[0151] A generally laterally extending support member can be provided between the upper ends of a pair of mounting brackets 23. For example, this support member can be configured as a support rod or support tube 53, which is welded to the pair of mounting brackets 23. A U-shaped first motor bracket 51, having opposing side plates 56 (see FIG. 22), can be fixed, and in particular welded, to the support member or, more specifically, to the support tube 53. Particularly advantageously, the first motor bracket 51 can be centrally positioned on the support member. A U-shaped second motor bracket 52 has opposing side plates, with the upper side plate having a pair of flanges 55 on its opposing edges. Each flange 55 is connected to one side plate 56 of the first motor bracket 51 by fastening elements 54 (e.g., rivets, screws, step bolts, pins, or the like), such that the second motor bracket 52 is rotatable relative to the first motor bracket 51 about a first pivot axis A1. The tabletop motor 30 is mounted in the second motor bracket 52. Here, the fastening element 54 defines the first pivot axis A1 (see FIG. 22). The fastening element 43 connecting the nut 62 to a pair of drive rods 42 defines the second pivot axis A2 (see Figure 21). The first pivot axis A1, the second pivot axis A2, and the shaft 40 extend parallel to each other.

[0152] Particularly advantageously, as shown in FIG20, when the tabletop 10 of the tabletop device 200 is in the retracted state, the first link 21 contacts the first end 22a of the second link 22. Therefore, when the tabletop 10 of the tabletop device 200 is in the retracted state, the tabletop device 200 is less susceptible to vibration during vehicle operation. Although FIG20 shows the case of the four-bar linkage 20 of the tabletop device 200 according to the second embodiment, it goes without saying that this also applies to the four-bar linkage 20 of the tabletop device 200 according to the first embodiment.

[0153] Furthermore, it is particularly advantageous that, as shown in Figures 9 and 12 to 14, in the maximum open position of the tabletop device 200, the first link 21 contacts the second end 22b of the second link 22. This allows for a clear limitation on the maximum open position of the tabletop device 200. Although these figures illustrate the four-bar linkage 20 of the tabletop device 200 according to the first embodiment, it is self-evident that this also applies to the four-bar linkage 20 of the tabletop device 200 according to the second embodiment.

[0154] The table device 200 according to the second embodiment has the following advantages: the table motor 30 can be located below and adjacent to the crossbeam 107 of the backrest 102, a location with sufficient space to accommodate the table motor 30. This allows the table device 200 to be installed without altering the backrest 102, especially without increasing its thickness, facilitating the use of the same seat design for both manual and electric tabletops. Furthermore, the placement of the table motor 30 within this recess meets collision safety requirements, ensuring a safe distance between the occupant and the internal metal components of the seat during a collision, thus reducing the risk of injury to the occupant.

[0155] It should be noted that the terminology used herein is for illustrative purposes only and is not intended to limit the disclosure. The singular forms “a” and “the one” as used herein should include the plural forms unless the context explicitly states otherwise. It is understood that the terms “comprising” and “including,” and other similar terms, when used in the application documents, specifically describe the presence of the stated operation, element, and / or component, without excluding the presence or addition of one or more other operations, elements, components, and / or combinations thereof. The term “and / or” as used herein includes all arbitrary combinations of one or more of the associated listed items. In the description of the drawings, similar reference numerals always denote similar elements.

[0156] The thickness of the elements in the accompanying drawings may be exaggerated for clarity. It is also understood that if an element is described as being on, coupled to, or connected to another element, then the element may be directly formed on, coupled to, or connected to the other element, or there may be one or more intermediate elements between them. Conversely, if the expressions "directly on," "directly coupled to," and "directly connected to" are used herein, it indicates that there is no intermediate element. Other terms used to describe relationships between elements should be interpreted similarly, such as "between" and "directly between," "attached" and "directly attached," "adjacent" and "directly adjacent," etc.

[0157] Terms such as “top,” “bottom,” “above,” “below,” “over,” “under,” etc., are used to describe the relationship of one element, layer, or region relative to another element, layer, or region, as shown in the accompanying drawings. It is understood that these terms should also encompass other orientations of the device in addition to those described in the accompanying drawings.

[0158] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of the inventive concept.

[0159] It can also be considered that all the exemplary embodiments disclosed herein can be arbitrarily combined with each other. Finally, it should be noted that the above embodiments are merely for understanding the present invention and do not constitute a limitation on the scope of protection of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and these modifications do not depart from the scope of protection of the present invention.

Claims

1. A method for adjusting a tabletop device (200) disposed on the back side of a backrest (102) of a vehicle seat (100), the backrest of the vehicle seat being equipped with a Hall motor (103) for driving the backrest of the vehicle seat to adjust the tilt angle of the backrest, the tabletop device further comprising a linkage mechanism, a tabletop motor (30), and a controller, the tabletop (10) being coupled to the backrest of the vehicle seat via the linkage mechanism, the tabletop motor being configured to drive the linkage mechanism such that the tabletop can switch between a retracted state and a predetermined open state, the controller being configured to control the tabletop motor, the method comprising: - In the predetermined open state of the table, the controller reads the signal from the Hall motor to identify the tilt angle or tilt change of the vehicle seat back; and The controller generates a first control command based on the tilt angle or the change in tilt angle. The first control command controls the operation of the table motor. The table motor operates the linkage mechanism so that the table is kept in a predetermined open state by following the tilt angle of the backrest of the vehicle seat.

2. The method according to claim 1, characterized in that, The method further includes: when the table is in the retracted state, the controller reads the signal of the Hall motor; When the controller receives the command to open the table, the controller identifies the tilt angle of the vehicle seat back based on the signal read from the Hall motor, and determines whether the tilt angle is within a preset tilt angle range; When the tilt angle is within a preset tilt angle range, the controller issues a second control command based on the tilt angle. The second control command controls the operation of the table motor, and the table motor manipulates the linkage mechanism to open the table from the retracted state and adjust it to the predetermined open state. When the tilt angle exceeds the preset tilt angle range, the controller issues a third control command, which restricts the operation of the tabletop motor.

3. The method according to claim 2, characterized in that, The method further includes: when the tabletop is in the retracted state, and the tilt angle exceeds a preset tilt angle range, the controller issues a fourth control command to output a first warning signal to the user of the tabletop device regarding prohibiting the activation of the tabletop device.

4. The method according to claim 3, characterized in that, The first warning signal is output by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the user of the tabletop device.

5. The method according to any one of claims 2 to 4, characterized in that, The user of the tabletop device receives the tabletop opening command from the tabletop device via a contact method using a switch or button provided with the tabletop device, and / or via a non-contact method using voice interaction, eye contact interaction, and / or gesture recognition.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: when the table is in the open state, and the target tilt angle of the vehicle seat back, as identified by the signal of the Hall motor read by the controller, exceeds a preset tilt angle range, the controller issues a fifth control command, which restricts the operation of the Hall motor.

7. The method according to claim 6, characterized in that, The method further includes: when the table is in the open state, and the target tilt angle of the vehicle seat backrest, as identified by the signal of the Hall motor read by the controller, exceeds a preset tilt angle range, the controller issues a sixth control command to output a second warning signal restricting or prohibiting backrest adjustment to the occupant seated on the vehicle seat.

8. The method according to claim 7, characterized in that, The second warning signal is output by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the occupant seated in the vehicle.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: determining whether there is an obstacle in the movement path of the table during the table's retraction process and / or during the table's opening process and / or during the table's maintenance of a predetermined open state following the tilt angle of the vehicle seat backrest, wherein... - Upon detecting the presence of an obstacle, the controller issues a seventh control command, which restricts the operation of the tabletop motor; Then, after determining that the obstacle has been removed, the controller issues an eighth control command, which resumes the operation of the tabletop motor, so that the tabletop continues to move to the target position.

10. The method according to claim 9, characterized in that, Identifying the presence of obstacles in the movement path of the tabletop and / or identifying and removing obstacles in the movement path of the tabletop includes: using an image acquisition device or by determining the resistance of the tabletop to the obstacle, wherein when the tabletop is subjected to the resistance of the obstacle, the tabletop motor sends a stall signal to the controller.

11. The method according to claim 9, characterized in that, When an obstacle is determined to be present in the movement path of the table, a warning signal regarding the presence of the obstacle and / or a reminder signal for removing the obstacle are output to the user of the table device and / or the occupant seated in the vehicle seat by means of a light-emitting component and / or an acoustic alarm device and / or a graphic display device for the user of the table device and / or the occupant seated in the vehicle seat.

12. The method according to any one of claims 1 to 11, characterized in that, The method further includes: - With the table in the folded-down state, the system detects the user of the table device sitting on the rear seat behind the vehicle seat; and then... - Activate the indicator lights on the tabletop and / or illuminate the switches or buttons on the tabletop.

13. The method according to any one of claims 1 to 12, characterized in that, The tabletop is set to a predetermined open state in which it is positioned substantially horizontally.

14. The method according to any one of claims 1 to 13, characterized in that, The method is carried out using the tabletop device which also has the following features, wherein the linkage mechanism is configured as a four-bar linkage (20), the four-bar linkage including an upper first link (21) and a lower second link (22), a first end (21a, 22a) of each of the first link and the second link being connected to the backrest of the vehicle seat, and a second end (21b, 22b) of each of the first link and the second link being connected to the tabletop.

15. The method according to claim 14, characterized in that, The tabletop motor is connected to the second connecting rod in a transmission manner.

16. The method according to claim 14 or 15, characterized in that, The four-bar linkage includes a pair of first links arranged side by side and a pair of second links arranged side by side.

17. The method according to claim 16, characterized in that, The tabletop motor is in a transmission connection with the pair of second connecting rods.

18. The method according to claim 17, characterized in that, The tabletop device includes a synchronizing component that causes the pair of second linkages to move synchronously, and the synchronizing component can be driven by a tabletop motor.

19. The method according to claim 18, characterized in that, The synchronization component is configured as a rotating shaft (40), which is anti-torsional connected to the first ends of the pair of second connecting rods, and the tabletop motor is in a transmission connection with the rotating shaft.

20. The method according to any one of claims 14 to 19, characterized in that, The tabletop device includes a mounting bracket (23), which is connected to the first ends (21a, 22a) of the first link and the second link, respectively.

21. The method according to claim 20, characterized in that, The vehicle seat also includes a base plate (104), to which the mounting bracket is mounted.

22. The method according to claim 19, characterized in that, The tabletop device includes a toothed plate (41) that is anti-torsionally connected to a rotating shaft, the toothed plate having a toothed sector, and the tabletop motor having an output gear (34) that meshes with the toothed sector.

23. The method according to claim 22, characterized in that, The tabletop device includes a first motor mounting plate (31) and a second motor mounting plate (32). The first motor mounting plate and the second motor mounting plate are mounted on the rotating shaft and are disposed on both sides of the toothed plate. The first motor mounting plate is adjacent to the tabletop motor. The output shaft of the tabletop motor with an output gear passes through the first motor mounting plate, and the free end of the output shaft is supported by the second motor mounting plate.

24. The method according to claim 23, characterized in that, The second motor mounting plate includes a bottom section (32a), two opposing side legs (32b) bent from the bottom section, and abutment sections (32c) bent outward from the two side legs respectively. The second mounting plate abuts against the first motor mounting plate with each abutment section, and the free end of the output shaft is supported by the bottom section of the second motor mounting plate.

25. The method according to any one of claims 22 to 24, characterized in that, The tabletop device includes a spring (35) mounted on a rotating shaft, which preloads the rotating shaft to eliminate the meshing clearance between the output gear and the sector gear.

26. The method according to claim 19, characterized in that, The rotating shaft has a follower finger (37) that extends into a positioning window (105) which restricts the range of motion of the follower finger and thus restricts the range of rotation angle of the rotating shaft.

27. The method according to claim 26, characterized in that, The vehicle seat also includes a base plate (104), to which the table motor is mounted, and the base plate has the positioning window.

28. The method according to claim 19, characterized in that, The tabletop motor is mounted above the rotating shaft. The tabletop motor has a pushing mechanism coupled to the rotating shaft. The rotating shaft is rotated by pushing and pulling through the pushing mechanism.

29. The method according to claim 28, characterized in that, The tabletop electric mechanism becomes a lead screw motor, and the lead screw motor includes a lead screw nut mechanism (60) as the driving mechanism.

30. The method according to claim 29, characterized in that, The lead screw and nut mechanism (60) includes a lead screw (61) that can be driven to rotate and a nut (62) or threaded sleeve that engages with the lead screw. The lead screw motor is mounted to be rotatable about a first pivot axis (A1), and the nut or threaded sleeve is rotatably connected to the pivot about a second pivot axis (A2) that is parallel to the first pivot axis.

31. The method according to claim 30, characterized in that, The tabletop device includes a U-shaped first motor bracket (51) and a U-shaped second motor bracket (52). One side plate of the second motor bracket has a pair of flanges (55) on opposite edges of the side plate. Each flange is connected to one side plate (56) of the first motor bracket, such that the second motor bracket is rotatable relative to the first motor bracket about a first pivot axis. The tabletop motor is mounted in the second motor bracket.

32. The method according to claim 31, characterized in that, The tabletop device includes a pair of mounting brackets (23) and a support rod or support tube (53) welded between the pair of mounting brackets, on which the first motor bracket is welded.

33. The method according to any one of claims 30 to 32, characterized in that, The tabletop device has a pair of transmission rods (42) fixedly connected to the rotating shaft, and the nut or threaded sleeve is rotatably connected to the pair of transmission rods about a second pivot axis.

34. The method according to any one of claims 14 to 33, characterized in that, In the retracted state of the tabletop, the first link (21) contacts the first end (22a) of the second link; and / or in the maximum open position of the tabletop device, the first link (21) contacts the second end (22b) of the second link.

35. A controller for adjusting a tabletop device (200) disposed on the back side of a backrest (102) of a vehicle seat (100), the tabletop device comprising a linkage mechanism and a tabletop motor (30), the tabletop (10) being coupled to the backrest of the vehicle seat via the linkage mechanism, the tabletop motor being configured to drive the linkage mechanism, and the backrest of the vehicle seat being provided with a Hall effect motor (103) for driving the backrest of the vehicle seat to adjust the tilt angle of the backrest, characterized in that, The controller is configured to control the tabletop motor, enabling the tabletop to transition between a retracted state and a predetermined open state. The controller is also configured to: - In the pre-defined open state of the table, the signal from the Hall motor is read to identify the tilt angle or change in tilt of the vehicle seat back; and - A first control command is generated based on the tilt angle or the change in tilt angle. The first control command controls the operation of the table motor. The table motor operates the linkage mechanism so that the table is kept in a predetermined open state in a manner that follows the tilt angle of the backrest of the vehicle seat.

36. The controller according to claim 35, characterized in that, The controller is integrated into the tabletop motor, or it can be connected to the tabletop motor as a separate control unit.

37. The controller according to claim 35 or 36, characterized in that, The controller is configured to implement the method according to any one of claims 1 to 34.

38. A vehicle seat system comprising: A vehicle seat (100) having an adjustable backrest (102) and equipped with a Hall motor (103) for driving the backrest of the vehicle seat to adjust the backrest angle. A tabletop device (200) is disposed on the back side of the backrest of a vehicle seat. The tabletop device includes a tabletop (10), a linkage mechanism, and a tabletop motor (30). The linkage mechanism is coupled to the tabletop (10), and the tabletop motor is configured to drive the linkage mechanism. The controller according to any one of claims 35 to 37.

39. A computer-readable storage medium having a computer program stored thereon, the computer program being configured to cause implementation of the method according to any one of claims 1 to 34 when the computer program is run on a processor.

40. A computer program product comprising a computer program configured to, when the computer program is run on a processor, cause implementation of the method according to any one of claims 1 to 34.

41. A table device for a vehicle, the table device comprising a table (10), characterized in that, The tabletop device further includes a linkage mechanism, a tabletop motor (30), and a controller (50). The linkage mechanism is coupled to the tabletop, the tabletop motor is configured to drive the linkage mechanism, and the controller is configured to control the tabletop motor so that the tabletop can switch between a retracted state and a predetermined open state via the tabletop motor controlled by the controller.

42. The table device for a vehicle according to claim 41, characterized in that, The tabletop device is configured to be mounted on a tilt-adjustable vehicle component that can be driven by a Hall motor (103), and the controller is configured to be signal-connected to the Hall motor to control the tabletop motor to drive the tabletop to adjust to a predetermined open state based on the tilt angle of the vehicle component obtained from the Hall motor.

43. The table device for a vehicle according to claim 42, characterized in that, The vehicle component is configured as an adjustable backrest (102) for a vehicle seat, and the vehicle seat is equipped with the Hall motor.

44. The table device for a vehicle according to any one of claims 41 to 43, characterized in that, The linkage mechanism is configured as a four-bar linkage (20), which includes a first link (21) at the top and a second link (22) at the bottom. A first end (21a, 22a) of each of the first and second links is configured to be connected to a vehicle component, and a second end (21b, 22b) of each of the first and second links is connected to a table.

45. The table device for a vehicle according to claim 44, characterized in that, The tabletop motor is connected to the second connecting rod in a transmission manner.

46. ​​The table device for a vehicle according to claim 44 or 45, characterized in that, The four-bar linkage includes a pair of first links arranged side by side and a pair of second links arranged side by side.

47. The table device for a vehicle according to claim 46, characterized in that, The tabletop motor is in a transmission connection with the pair of second connecting rods.

48. The table device for a vehicle according to claim 47, characterized in that, The tabletop device includes a synchronizing component that causes the pair of second linkages to move synchronously, and the synchronizing component can be driven by a tabletop motor.

49. The table device for a vehicle according to claim 48, characterized in that, The synchronization component is configured as a rotating shaft (40), which is anti-torsional connected to the first ends of the pair of second connecting rods, and the tabletop motor is in a transmission connection with the rotating shaft.

50. The table device for a vehicle according to any one of claims 44 to 49, characterized in that, The tabletop device includes a mounting bracket (23), which is connected to the first ends (21a, 22a) of the first link and the second link, respectively.

51. The table device for a vehicle according to claim 50, characterized in that, The vehicle component also includes a base plate (104), to which the mounting bracket is mounted.

52. The table device for a vehicle according to claim 49, characterized in that, The tabletop device includes a toothed plate (41) that is anti-torsionally connected to a rotating shaft, the toothed plate having a toothed sector, and the tabletop motor having an output gear (34) that meshes with the toothed sector.

53. The table device for a vehicle according to claim 52, characterized in that, The tabletop device includes a first motor mounting plate (31) and a second motor mounting plate (32). The first motor mounting plate and the second motor mounting plate are mounted on the rotating shaft and are disposed on both sides of the toothed plate. The first motor mounting plate is adjacent to the tabletop motor. The output shaft of the tabletop motor with an output gear passes through the first motor mounting plate, and the free end of the output shaft is supported by the second motor mounting plate.

54. The table device for a vehicle according to claim 53, characterized in that, The second motor mounting plate includes a bottom section (32a), two opposing side legs (32b) bent from the bottom section, and abutment sections (32c) bent outward from the two side legs respectively. The second motor mounting plate abuts against the first motor mounting plate with each abutment section, and the free end of the output shaft is supported by the bottom section of the second motor mounting plate.

55. The table device for a vehicle according to any one of claims 52 to 54, characterized in that, The tabletop device includes a spring (35) mounted on a rotating shaft, which preloads the rotating shaft to eliminate the meshing clearance between the output gear and the sector gear.

56. The table device for a vehicle according to claim 49, characterized in that, The rotating shaft has a follower finger (37) that extends into a positioning window (105) which restricts the range of motion of the follower finger and thus restricts the range of rotation angle of the rotating shaft.

57. The table device for a vehicle according to claim 56, characterized in that, The vehicle component also includes a base plate (104), to which the table motor is mounted, and the base plate has the positioning window.

58. The table device for a vehicle according to claim 49, characterized in that, The tabletop motor is mounted above the rotating shaft. The tabletop motor has a pushing mechanism coupled to the rotating shaft. The rotating shaft is rotated by pushing and pulling through the pushing mechanism.

59. The table device for a vehicle according to claim 58, characterized in that, The tabletop electric mechanism becomes a lead screw motor, and the lead screw motor includes a lead screw nut mechanism (60) as the driving mechanism.

60. The table device for a vehicle according to claim 59, characterized in that, The lead screw and nut mechanism (60) includes a lead screw (61) that can be driven to rotate and a nut (62) or threaded sleeve that engages with the lead screw. The lead screw motor is mounted to be rotatable about a first pivot axis (A1), and the nut or threaded sleeve is rotatably connected to the pivot about a second pivot axis (A2) that is parallel to the first pivot axis.

61. The table device for a vehicle according to claim 60, characterized in that, The tabletop device includes a U-shaped first motor bracket (51) and a U-shaped second motor bracket (52). One side plate of the second motor bracket has a pair of flanges (55) on opposite edges of the side plate. Each flange is connected to one side plate (56) of the first motor bracket, such that the second motor bracket is rotatable relative to the first motor bracket about a first pivot axis. The tabletop motor is mounted in the second motor bracket.

62. The table device for a vehicle according to claim 61, characterized in that, The tabletop device includes a pair of mounting brackets (23) and a support rod or support tube (53) welded between the pair of mounting brackets, on which the first motor bracket is welded.

63. The table device for a vehicle according to any one of claims 60 to 62, characterized in that, The tabletop device has a pair of transmission rods (42) fixedly connected to the rotating shaft, and the nut or threaded sleeve is rotatably connected to the pair of transmission rods about a second pivot axis.

64. The table device for a vehicle according to any one of claims 44 to 63, characterized in that, In the retracted state of the tabletop device, the first link (21) contacts the first end (22a) of the second link; and / or in the fully open position of the tabletop device, the first link (21) contacts the second end (22b) of the second link.

65. The table device for a vehicle according to any one of claims 41 to 64, characterized in that, In the predetermined open state, the tabletop is positioned horizontally.

66. The table device for a vehicle according to any one of claims 41 to 65, characterized in that, The tabletop electric mechanism becomes a Hall motor used to operate the linkage mechanism.

67. A structural component for a vehicle, characterized in that, The structural component includes a table device for a vehicle according to any one of claims 1 to 66.

68. The structural component for a vehicle according to claim 67, characterized in that, The structural component includes a vehicle seat, the table device is mounted to the back of the vehicle seat, and the vehicle seat is equipped with a Hall motor for adjusting the tilt angle of the vehicle seat back.

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