A table board structure of an automobile seat and a vehicle

Abstract

The utility model relates to a table board structure of automobile seat belongs to the technical field of automotive trim, and the table board structure of automobile seat includes: base, table board, connecting rod subassembly and drive assembly. Connecting rod subassembly includes drive arm and rotary arm, and the rotary arm is slidably and rotatably arranged on the table board, and the table board is configured to be driven by the drive arm and the rotary arm moving towards each other or moving away from each other, and moves between the first position and the second position. It also relates to a vehicle, including a vehicle body and a table board structure of automobile seat, and the table board structure of automobile seat is installed on the seat in the vehicle body. The table board structure of automobile seat and the vehicle of the utility model through the mixed motion mechanism of one hinged and one sliding hinge composed of the drive arm and the rotary arm, the table board can move along the more flat compound track between the first position and the second position, significantly reduces the maximum envelope radius when the table board is unfolded or folded, thereby reducing the safety clearance required for the knee of the passenger and the front row backrest.

Description

Technical Field

[0001] This utility model belongs to the field of automotive interior technology, and in particular relates to a table structure for an automotive seat and a vehicle. Background Technology

[0002] As automobiles become increasingly intelligent and comfortable, cabin interiors are required to cater to diverse scenarios such as work, dining, and entertainment. Small tables, as one of the most frequently used functional components by rear passengers, have become standard equipment in mid-to-high-end models; they must not only carry items but also be completely concealed within the seatback when not in use to ensure passenger space and safety.

[0003] The most common solution for folding tray tables currently available involves placing a base on the seat back frame, with the base connected to the tray table via two rigid connecting rods. All four ends of the two connecting rods are fixedly hinged: one end is hinged to a fixed rotating shaft on the base, and the other end is hinged to a fixed rotating shaft on the tray table. When a passenger needs to unfold the tray table, they manually pull it outwards, causing the two connecting rods to rotate synchronously around their respective fixed hinge points, resulting in a near-"flipping out" motion. To fold it up, the rods are pushed back in the opposite direction, causing the tray table to rest against the back of the seat back.

[0004] Although the above-mentioned linkage-four-hinged structure has fewer parts and is simpler to manufacture, it has two obvious shortcomings: 1. The entire stroke relies entirely on manual operation by the passenger, resulting in low intelligence and poor ease of operation; 2. The table's movement trajectory is a pure circular arc rotation around a fixed axis. During the unfolding process, the envelope space swept by the farthest point of the table is the largest. In order to achieve both rotation and extension at the same time, the length of one linkage is usually greater than that of the other linkage, which further increases the motion envelope during the unfolding process. This means that a larger safety gap must be reserved between the passenger's knees or the back of the front seat to allow the table to extend smoothly, which is not conducive to the layout of the vehicle interior space. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, this application aims to provide a table structure for a car seat and a vehicle, with the intention of reducing the motion envelope of the table during the process of folding and extending through a new structural design of the linkage structure and its drive structure, thereby reducing the safety gap required between the passenger's knees or the back of the front seat, reducing the required cutout depth of the seat back and the thickness of the seat, so as to solve the problems of manual flipping of small tables and large space occupation and inconvenient operation in the prior art.

[0007] To achieve the above objectives, in a first aspect, this utility model provides a table structure for an automobile seat, comprising: Base; A tabletop, wherein the tabletop is disposed on the rear side of the base; A linkage assembly is disposed between the base and the tabletop; the linkage assembly includes: A drive arm, one end of which is rotatably mounted on the base, and the other end of which is rotatably mounted on the table. A rotating arm, one end of which is rotatably mounted on the base, and the other end of which is slidably and rotatably mounted on the table. A drive assembly is disposed on the base; the drive assembly is configured to drive the drive arm and the rotating arm to rotate. The tabletop is configured to move between a first position and a second position under the action of the drive arm and the rotating arm, which rotate in opposite directions or move in opposite directions; in the first position, the tabletop is attached to the base, and in the second position, the tabletop extends backward and is set horizontally.

[0008] In the existing technical solution, the small table is connected to the base on the seat back frame by two rigid connecting rods. Both ends of the two connecting rods are hinged to the small table and the base, respectively. When the small table moves from a folded state (attached to the base surface) to a horizontally extended state, both connecting rods rotate around their hinge points on the base. The connection points between the small table and the two connecting rods move accordingly. Due to the large motion envelope of the connecting rods, the small table occupies a significant amount of space during its unfolding process. Furthermore, in the folded state, the small table rests against the base and is roughly vertically positioned; in the extended state… In its current state, the small table extends to the rear of the base and is horizontally positioned. The process of moving the small table from its folded to its extended state requires a flipping motion. To ensure the flipping of the small table using the four-bar linkage consisting of the small table, base, and two connecting rods, one of the connecting rods typically has a larger radius of rotation than the other. This further increases the motion envelope of the two connecting rods, consequently increasing the motion envelope of the small table. Consequently, a larger safety clearance must be maintained between the passenger's knees or the back of the front seat for the table to extend smoothly, which is detrimental to the layout of the vehicle's interior space and adds complexity to the structural design. Furthermore, the extension and folding of the small table rely on manual operation by the passenger, resulting in low levels of automation and poor ease of use.

[0009] This application, through the aforementioned solution, utilizes a hybrid motion mechanism consisting of a drive arm and a rotating arm, comprising a hinge and a sliding hinge. This mechanism allows the drive arm and rotating arm to rotate in opposite directions, and the distance between their connection points on the table can change. The table can move along a flatter composite trajectory between the first position (attached to the base) and the second position (horizontally extended), significantly reducing the maximum envelope radius when the table is unfolded or folded up. This reduces the required safety clearance for the occupants' knees and the front seatbacks, facilitating the arrangement of other structures within the vehicle interior. Furthermore, the drive arm and rotating arm are driven by a drive assembly, automating and intelligently unfolding and folding the table, thus improving operational convenience.

[0010] In some embodiments of this application, the two ends of the table are designated as a first end and a second end. When the table is in the first position, the first end is positioned higher than the second end. The second plate end is connected to the drive arm, and the drive arm rotates upward to move the tabletop to the second position.

[0011] In the technical solution, the structural design allows the drive arm to rotate backward and upward to unfold the table, ensuring that the table is folded in a low position to make full use of the space behind the seat, so that the table can be unfolded from a low position to a high position for passenger use; on the other hand, when the table is in the folded state, the drive arm supports it and fully drives the entire table to unfold it efficiently.

[0012] In some embodiments of this application, the rotating arm is positioned above the driving arm; when the table moves to the second position, the rotating arm falls onto the driving arm from top to bottom.

[0013] In the technical solution, the structure is designed to form a "stacked stop" structure where the rotating arm falls from top to bottom to the drive arm, and a self-locking mechanism is formed at the second position to prevent the table from falling further, eliminating the need for additional locking components and improving the horizontal positioning rigidity and reliability.

[0014] In some embodiments of this application, the rotating arm is divided into a front rotating section and a rear rotating section, the front rotating section being connected to the base and the rear rotating section being connected to the table. The rear rotating section bends downward relative to the front rotating section; when the table moves to the second position, the rear rotating section contacts the rotating arm.

[0015] In the technical solution, the structural design makes the rotating arm have a "front-to-rear bending" configuration, which provides more movement space for the drive arm to reach the overlapping stop point, allowing the table to unfold to a higher second position, improving the convenience of using the table; on the other hand, it reduces the cantilever bending moment of the rotating arm, thereby reducing the deformation of the table when it is under load and improving the stability of the table.

[0016] In some embodiments of this application, both the rotating arm and the driving arm are connected to the side of the table. The side of the tabletop is provided with a sliding groove, which extends from one end of the tabletop to the other end; the end of the rotating arm away from the base is provided with a sliding shaft, which is disposed in the sliding groove.

[0017] In the technical solution, the structural design hides the entire slide rail and sliding shaft on the side of the tabletop, with no exposed guide rails on the exterior surface, which is both dustproof and improves visual cleanliness; on the other hand, the length of the slide rail limits the travel of the rotating arm along the tabletop, thereby limiting the flipping angle of the tabletop, eliminating the need for additional hard limiters and reducing the number of parts.

[0018] In some embodiments of this application, the driving component includes: The first gear is provided on the drive shaft at one end of the drive arm, the drive shaft is provided on the base, and the first gear is provided on the drive shaft; The second gear is mounted on the base, and the first gear meshes with the second gear. One end of the rotating arm is provided with a rotating shaft. A driver connected to the drive arm to rotate the drive arm.

[0019] In the technical solution, the structural design achieves the opposite rotation of the drive arm and the rotating arm through the meshing of gears. Furthermore, the rotation of the drive arm and the rotating arm is synchronous and reversible during the unfolding / folding process of the table, thus eliminating structural jamming caused by asynchronous rotation of the drive arm and the rotating arm.

[0020] In some embodiments of this application, the effective number of teeth participating in meshing in the first gear is: The number of effective teeth participating in meshing in the second gear is , Greater than .

[0021] In the technical solution, the structural design uses the gear ratio between the gears to make the rotation angle of the drive arm greater than that of the rotating arm. On the one hand, this changes the distance between the connection points of the two on the table when the table is being folded up or down, thus increasing the flipping of the table and improving the efficiency of folding up or down the table. On the other hand, it further reduces the overall envelope of the movement of the drive arm and the rotating arm, thereby further reducing the space occupied by the table when it is being folded up or down.

[0022] In some embodiments of this application, the second gear is a sector gear.

[0023] In the technical solution, the structural design reduces the volume of the gear structure when the rotation angle of the rotating arm is relatively small, thereby saving the radial installation space inside the seat back and avoiding interference between the round gear and the surrounding frame or foam, leaving room for the thinner backrest.

[0024] In some embodiments of this application, the linkage assembly is provided in two sets, respectively disposed on both sides of the table; the two drive arms and the two rotating arms are coaxially connected by a synchronous shaft.

[0025] In the technical solution, the structural design arranges connecting rod assemblies in pairs on the left and right sides of the tabletop, and uses synchronous shafts to rigidly connect the drive arms and rotating arms on both sides, so that the movement of the left and right sides is completely synchronized, eliminating unilateral load, swaying and abnormal noise, and significantly improving the load-bearing rigidity and reliability of the tabletop.

[0026] Secondly, this application provides a vehicle, including: The vehicle body, inside which seats are provided; The table structure of the car seat described above is disposed on the seat.

[0027] In the technical solution, this structural design applies the aforementioned table-like structure to the vehicle, eliminating the need for additional knee space for table movement and freeing up rear legroom. Meanwhile, the electric one-button unfolding / folding function can be seamlessly integrated with the vehicle's electronic control system, enhancing the intelligent cabin experience and contributing to vehicle weight reduction and cost reduction.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the car seat table structure according to the embodiments of this application in the folded state; Figure 2 This is a side structural diagram of the table structure of a car seat according to an embodiment of this application in a folded state; Figure 3 This is a side structural diagram of the table panel structure of the car seat according to the embodiments of this application when the table panel is in a first position and a second position; Figure 4 This is a schematic diagram of the overall structure of the car seat table structure according to the embodiments of this application in the unfolded state; Figure 5 This is a side view of the table structure of a car seat according to an embodiment of this application in an unfolded state. Figure 6 This is a schematic diagram illustrating the movement of the table structure of a car seat according to an embodiment of this application; Figure 7 This is a schematic diagram of the table structure of a car seat according to an embodiment of this application after the table is hidden.

[0030] In the above figures: 100, base; 200, tabletop; 201, first plate end; 202, second plate end; 203, slide groove; 300, connecting rod assembly; 301, drive arm; 302, rotating arm; 302-1, front rotating section; 302-2, rear rotating section; 302-3, sliding shaft; 400, drive assembly; 401, first gear; 402, second gear; 500, synchronous shaft. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0037] It's worth noting that in the automotive industry, a vehicle typically consists of four main modules: engine, chassis, body, and electrical and electronic systems. The passenger compartment within the vehicle integrates seats, dashboard, storage compartments, and multifunctional accessories to meet the growing demands for comfort and work. Small tables, a common feature in the passenger compartment, are usually installed on the back of the front seats. They can be folded away when not in use and unfolded to form a horizontal support surface for rear passengers to place laptops, books, or drinks, enabling in-vehicle work, dining, and entertainment.

[0038] In existing technology, the small table is connected to the base on the seat back frame by two rigid connecting rods. Both ends of the two connecting rods are hinged to the small table and the base, respectively. When the small table moves from a folded state (attached to the base surface) to a horizontally extended state, both connecting rods rotate around their hinge points on the base. The connection points between the small table and the two connecting rods move accordingly. Due to the large motion envelope of the connecting rods, the small table occupies a significant amount of space during its unfolding process. Furthermore, in the folded state, the small table rests against the base and is roughly vertically oriented; in the extended state, the small table… The tray table extends horizontally to the rear of the base, requiring a flipping motion to move it from a folded to an extended position. To ensure the flipping of the tray table via a four-bar linkage consisting of the tray table, base, and two connecting rods, one of the connecting rods typically has a larger radius of rotation than the other. This increases the range of motion of the two connecting rods, further increasing the motion envelope of the tray table. Consequently, a larger safety clearance must be maintained between the passenger's knees or the back of the front seat for the tray table to extend smoothly, which is detrimental to the layout of the vehicle interior and adds complexity to the structural design. Furthermore, the extension and folding of the tray table relies on manual operation by the passenger, resulting in low automation and poor ease of use.

[0039] Based on this, this application proposes a table structure for a car seat. Through a novel structural design of the linkage structure and its drive structure, the motion envelope of the table is reduced during the process of folding and extending, thereby reducing the safety gap required between the passenger's knees or the back of the front seat, reducing the required cutout depth of the seat back and the thickness of the seat, so as to solve the problems of manual flipping of small tables and large space occupation and inconvenient operation in the prior art.

[0040] See Figures 1 to 7 In one illustrative embodiment of the table structure for a car seat according to this application, the table structure includes a base 100. The base 100 is typically disposed on the backrest of the seat, serving as the structural basis for mounting the table structure on the seat. The base 100 is typically made of a sheet metal, thereby avoiding any increase in the overall thickness of the seat backrest due to the installation of the base 100.

[0041] See Figures 1 to 6In some embodiments, the car seat's table structure further includes a table 200. The table 200 is typically a flat structure, allowing it to be used for placing items when unfolded and laid flat. The table 200 is located on the rear side of the base 100, enabling it to be folded down to unfold the seat back or unfolded in front of rear passengers for use.

[0042] See Figures 1 to 7 In some embodiments, the table structure of the car seat further includes a linkage assembly 300. The linkage assembly 300 is disposed between the base 100 and the table 200 and connected to both, so that the table 200 is connected to the base 100 through the linkage assembly 300, thereby realizing the installation and fixation of the table 200; on the other hand, the movement of the linkage assembly 300 realizes the folding or unfolding of the table 200.

[0043] Furthermore, the linkage assembly 300 includes a drive arm 301. One end of the drive arm 301 is rotatably mounted on the base 100, enabling a movable connection between the drive arm 301 and the base 100, and allowing the drive arm 301 to rotate relative to the base 100 about its connection point with the base 100. The other end of the drive arm 301, away from the base 100, is rotatably mounted on the tabletop 200, enabling a movable connection between the drive arm 301 and the tabletop 200, and allowing the drive arm 301 to rotate relative to the tabletop 200 about its connection point with the tabletop 200.

[0044] The linkage assembly 300 further includes a rotating arm 302. One end of the rotating arm 302 is rotatably mounted on the base 100, enabling a movable connection between the rotating arm 302 and the base 100, and allowing the rotating arm 302 to rotate relative to the base 100 about its connection point with the base 100. The other end of the rotating arm 302, away from the base 100, is slidably and rotatably mounted on the tabletop 200, enabling a movable connection between the rotating arm 302 and the tabletop 200, and allowing the rotating arm 302 to not only rotate relative to the tabletop 200 about its connection point with the tabletop 200, but also allowing the connection point of the rotating arm 302 on the tabletop 200 to slide along the length of the tabletop 200.

[0045] See Figures 1 to 7 In some embodiments, the table structure of the car seat also includes a drive assembly 400. The drive assembly 400 is the power unit of the table structure, is usually disposed on the base 100, and connects the drive arm 301 and the rotating arm 302, thereby providing power for the rotation of the drive arm 301 and the rotating arm 302.

[0046] See Figures 1 to 7In some embodiments, both the drive arm 301 and the rotating arm 302 rotate under the drive of the drive assembly 400, causing the rotating drive arm 301 and the rotating arm 302 to move the panel between a first position and a second position. In the first position, the tabletop 200 is attached to the base 100, so that the tabletop 200 is in a folded state. In the second position, the tabletop 200 extends backward to a horizontal position, so that the tabletop 200 is in an unfolded state.

[0047] Furthermore, the rotating arm 302 is typically positioned above the drive arm 301. When the tabletop 200 is in the first position, the connection point of the rotating arm 302 on the tabletop 200 is higher than the connection point of the drive arm 301 on the tabletop 200. Driven by the drive assembly 400, the rotating arm 302 rotates backward and downward, while the drive arm 301 rotates backward and upward, causing the drive arm 301 and rotating arm 302 to rotate towards each other, gradually approaching each other. The rotation of the rotating arm 302 causes the lower part of the tabletop 200 to move upward and flip upward, while the upper part of the tabletop 200 flips downward; simultaneously, the rotation of the rotating arm 302 intensifies the downward flipping of the upper part of the tabletop 200, causing the upper part of the tabletop 200 to move downward, causing the tabletop 200 to flip to a horizontal position and move to the second position. Furthermore, the opposing rotation of the drive arm 301 and rotating arm 302 reduces the distance between their connection points on the tabletop 200, increasing the flipping radius of the upper part of the tabletop 200 and decreasing the flipping radius of the lower part of the tabletop. Because the lower part of the table 200 moves upward first when unfolded, and the flipping radius gradually decreases, the motion envelope of the table 200 from folded to unfolded not only occupies less space, but also occupies less space in the lower rear of the seats, thus reducing the impact of the table and chair motion envelope on the legroom between the front and rear seats. When the table 200 needs to move from the second position to the first position, the rotating arm 302 rotates forward and upward, and the drive arm 301 rotates forward and downward, causing the drive arm 301 and the rotating arm 302 to rotate in opposite directions, gradually moving away from each other, and the table 200 flips back to the folded state.

[0048] In existing technologies, a four-bar linkage typically includes a fixed bar, a driving bar, a floating bar, and a driven bar. The fixed bar is fixed in place, the driving bar is located between the fixed bar and the floating bar and hinged to both, and the driven bar is also located between the fixed bar and the floating bar and hinged to both. When the floating bar is completely positioned on one side of the fixed bar, the rotation direction of the driving bar can only be the same as the rotation direction of the driven bar. The floating bar's flipping is achieved by the difference between the lever arms of the driving bar and the driven bar. The structural design of this application changes the hinge between the driven rod and the floating rod in the four-bar linkage structure to a sliding hinge (capable of both sliding and rotating). This allows the drive arm 301 and the rotating arm 302 to form a hybrid motion mechanism of "one hinge and one sliding hinge," enabling the drive arm 301 and the rotating arm 302 to rotate in opposite directions or away from each other. This changes the distance between their connection points on the table 200, allowing for rapid upward movement of the lower part of the table 200 and reducing the flipping radius of the lower part of the table. This allows the table 200 to move along a flatter composite trajectory between the first position (against the base 100) and the second position (horizontally extended backward), reducing the impact of the table flipping on the legroom between the front and rear seats. This reduces the required safety clearance for the occupants' knees and the front seatbacks, facilitating the arrangement of other structures in the vehicle interior. Furthermore, the drive arm 301 and the rotating arm 302 are driven by the drive assembly 400, automating and intelligently retracting and unfolding the table 200, improving operational convenience.

[0049] See Figure 2 and Figure 5In some embodiments, the two ends of the tabletop 200 are respectively designated as a first end 201 and a second end 202, which are typically located at the two ends of the tabletop 200 in the length direction. In the first position, the tabletop 200 rests against the base 100 and extends vertically to a certain extent, such that the first end 201 is positioned higher than the second end 202. Further, when the tabletop 200 moves to the second position, the first end 201 is located at the end of the tabletop 200 away from the base 100, and the second end 202 is located at the end of the tabletop 200 closer to the base 100. The second end 202 is connected to the drive arm 301, meaning the drive arm 301 is connected to the bottom end of the tabletop 200 in the first position, and the drive arm 301 rotates backward and upward, causing the tabletop 200 to move to the second position. This structural design allows the drive arm 301 to rotate backward and upward, unfolding the tabletop 200. During unfolding, the tabletop 200 moves horizontally backward, moving away from the seat back to provide space for flipping. Simultaneously, its upward movement moves it from bottom to top to a second position for use. In this second position, the tabletop 200 is typically horizontally aligned with the top of the seat back, allowing it to fold down and face the seat back, maximizing the use of the seat back surface area. Furthermore, when the tabletop 200 is folded down, the lower-positioned drive arm 301 provides support, enhancing stability. This support ensures the driving force is fully applied to the tabletop 200, enabling efficient unfolding.

[0050] See Figures 1 to 7 In some embodiments, the rotating arm 302 is positioned above the driving arm 301, allowing the driving arm 301 to unfold the tabletop 200 by rotating backward and downward. When the tabletop 200 moves to the second position, the rotating arm 302 falls from top to bottom onto the driving arm 301. This structural design creates a "stacked stop" structure where the rotating arm 302 falls from top to bottom onto the driving arm 301, preventing the opposing driving arm 301 and rotating arm 302 from rotating further and locking the linkage structure in its current state. This locks the tabletop 200 in the unfolded second position without the need for additional locking components, simplifying the overall structure. Furthermore, the support of the rotating arm 302 by the driving arm 301 enhances the stability of the tabletop 200, preventing it from falling and improving horizontal positioning stiffness and reliability.

[0051] See Figures 1 to 7In some embodiments, the rotating arm 302 is divided into two parts: a front rotating section 302-1 and a rear rotating section 302-2. The front rotating section 302-1 is connected to the base 100, and the rear rotating section 302-2 is connected to the tabletop 200. The rear rotating section 302-2 is bent downward relative to the front rotating section 302-1, such that an obtuse angle is generally formed between the front rotating section 302-1 and the rear rotating section 302-2. When the tabletop 200 moves to a second position, the rear rotating section 302-2 contacts the rotating arm 302, so that the rotating arm 302 is located in the triangular space between the front rotating section 302-1 and the rear rotating section 302-2. This structural design results in a "front-to-rear bending" configuration for the rotating arm 302, creating an upwardly concave space. This allows the driving arm 301 to enter the concave space when it reaches the contact point with the rotating arm 302, thus providing more upward travel. Simultaneously, it reduces obstruction to some extent, allowing the connection point between the rotating arm 302 and the driving arm 301 on the base 100 to be closer. Furthermore, the rotating arm 302 has more downward travel, ultimately providing more movement space for both the driving arm 301 and the rotating arm 302. This ensures that the tabletop 200 can be flipped to a horizontal angle with a more compact and smaller range of motion, allowing it to unfold to a higher second position, improving the ease of use of the tabletop 200 and enhancing the structural compactness.

[0052] See Figures 1 to 7In some embodiments, both the rotating arm 302 and the driving arm 301 are connected to the side of the tabletop 200, such that the rotating arm 302 and the driving arm 301 are connected to the end face of the tabletop 200 in the width direction. A sliding groove 203 is provided on the side of the tabletop 200, extending from one end of the tabletop 200 to the other, i.e., along the length direction of the tabletop 200. A sliding shaft 302-3 is provided at the end of the rotating arm 302 away from the base 100, and the sliding shaft 302-3 is disposed in the sliding groove 203. Thus, the sliding and rotation of the driving arm 301 relative to the tabletop 200 is achieved through the sliding and rotation of the sliding shaft 302-3 in the sliding groove 203, providing more degrees of freedom for the linkage structure. This structural design conceals the entire sliding groove 203 and sliding shaft 302-3 within the side of the tabletop 200, allowing both the drive arm 301 and the rotating arm 302 to move freely along the side of the tabletop 200. This ensures that the rotation of the drive arm 301 and the rotating arm 302 is not obstructed by the tabletop 200, eliminating the need for slots in the tabletop 200 to accommodate the drive arm 301 or the rotating arm 302, and also eliminating the need for guide rails on the surface of the tabletop 200 for the rotating arm 302 to slide. This maintains the integrity of the tabletop 200 surface, improving its visual neatness, and the side-mounted sliding groove 203 is less prone to dust accumulation. Furthermore, the length of the sliding groove 203 limits the travel of the rotating arm 302 along the length of the tabletop, thereby limiting the flipping angle of the tabletop 200 and restricting its horizontal position in the second position, eliminating the need for additional hard stops and reducing the number of parts.

[0053] See Figures 1 to 7 In some embodiments, the drive assembly 400 includes a first gear 401. A drive shaft is disposed at one end of the drive arm 301, and the drive shaft is mounted on the base 100, allowing the drive arm 301 to be rotatably mounted on the base 100. The first gear 401 is disposed on the drive shaft and is typically coaxially fixed to it, such that when the drive arm 301 rotates, the drive shaft and the first gear 401 rotate synchronously and coaxially.

[0054] The drive assembly 400 further includes a second gear 402. A rotating shaft is provided at one end of the rotating arm 302, and the rotating shaft is mounted on the base 100, allowing the rotating arm 302 to be rotatably mounted on the base 100. The second gear 402 is mounted on the rotating shaft and is typically coaxially fixed to it, so that when the rotating arm 302 rotates, the rotating shaft and the second gear 402 rotate synchronously and coaxially.

[0055] The drive assembly 400 also includes a driver (not shown in the figures). The driver is typically a motor, the output shaft of which is typically connected to the drive shaft on the drive arm 301 via a coupling, or by mounting a drive gear on the output shaft of the motor and meshing the drive gear with the first gear 401, thereby driving the rotation of the drive arm 301.

[0056] The first gear 401 meshes with the second gear 402, so that the drive arm 301, which is driven to rotate by the driver, can drive the rotating arm 302 to rotate through the transmission between the gears. Thus, the drive arm 301 and the rotating arm 302 are driven by the gear transmission, and the two can rotate towards each other and away from each other.

[0057] This structural design achieves the driving of two components, drive arm 301 and rotating arm 302, by a single drive through the meshing of gears. On the one hand, it enables the two to rotate in opposite directions and in opposite directions; on the other hand, it ensures that the rotation of drive arm 301 and rotating arm 302 is synchronous and reversible during the unfolding / folding process of table 200, and eliminates structural jamming caused by asynchronous rotation of drive arm 301 and rotating arm 302.

[0058] See Figures 1 to 7 In some embodiments, the effective number of teeth participating in meshing in the first gear 401 is: The number of effective teeth participating in meshing in the second gear 402 is , Greater than The effective number of teeth refers to the number of gear teeth on the gear that participate in the meshing transmission, that is, the number of gear teeth on the first gear 401 that have meshed with the second gear 402 during the movement of the table 200 from folding to unfolding. The number of teeth on the second gear 402 that have meshed with the first gear 401 is This structural design utilizes the difference in the number of teeth effectively meshing between the first gear 401 and the second gear 402 to create a transmission ratio. This ensures that when the drive arm 301 and the rotating arm 302 rotate synchronously, the rotation angle of the drive arm 301 is greater than that of the rotating arm 302. This results in the table 200 rotating at a greater angle near the seat back as it flips from being against the seat back to being horizontal, thus increasing the efficiency of the table 200's unfolding and retraction. Furthermore, it minimizes and quickly reduces the encroachment of the table 200 on the legroom behind the seat. Additionally, the shorter downward stroke of the rotating arm 302 keeps the table 200 in a higher position, facilitating passenger use and reducing its impact on the legroom below. This also reduces the motion envelope of the rotating arm 302, thereby reducing the overall motion envelope of the drive arm 301 and the rotating arm, further minimizing the space occupied by the unfolded table 200.

[0059] See Figures 1 to 7 In some embodiments, the second gear 402 is a sector gear. This structural design, due to the large number of effective teeth on the second gear 402, limits the rotation angle generated by the rotation of the first gear 401 driving the second gear 402 during the unfolding of the tabletop 200. If the second gear 402 were a complete circular structure, most of its teeth would not mesh with the first gear 401. However, by using a sector gear, only the portion of the second gear 402 that meshes with the first gear 401 remains, thus reducing the volume occupied by the second gear 402. This eliminates the need for a large space inside the seat to accommodate the second gear 402, saving radial installation space inside the seat back and preventing interference between the circular gear and the surrounding frame or foam inside the seat, allowing for a thinner backrest.

[0060] See Figures 1 to 7In some embodiments, two sets of linkage assemblies 300 are provided, respectively located on both sides of the tabletop 200, i.e., the tabletop 200 is situated between the two sets of linkage assemblies 300 in the width direction of the tabletop 200. The two drive arms 301 are coaxially connected via a synchronous shaft 500, which is typically located at the hinge point of the drive arms 301 on the tabletop 200, allowing the tabletop 200 to rotate relative to each other via the synchronous shaft 500. The two rotating arms 302 are coaxially connected via a synchronous shaft 500, i.e., both ends of the synchronous shaft 500 are coaxially connected to the rotation axes of the two rotating arms 302. The synchronous shaft 500 enables the two drive arms 301 on both sides to rotate synchronously, and the two rotating arms 302 to rotate synchronously. The structural design arranges connecting rod assemblies 300 in pairs on the left and right sides of the tabletop 200, and uses a synchronous shaft 500 to rigidly connect the drive arms 301 and the rotating arms 302 on both sides, so that the movement of the connecting rod assemblies 300 on the left and right sides is completely synchronized, allowing the tabletop 200 to fold or unfold smoothly, eliminating unilateral load, swaying and abnormal noise, and significantly improving the load-bearing rigidity and reliability of the tabletop 200.

[0061] Furthermore, this application also provides a vehicle, which includes a body. The body is the core structure of the vehicle, including a chassis and body panels. The chassis provides basic support and driving functions for the vehicle, while the body panels constitute the exterior of the vehicle and protect internal components. The interior of the body panels forms a passenger compartment, in which seats are arranged. The vehicle further includes the aforementioned car seat table structure, which is mounted on the seat, more specifically, on the seat back. By adopting this car seat table structure, the vehicle no longer needs to reserve extra knee space for the table 200 movement, freeing up rear legroom; at the same time, the electric one-button unfolding / folding function can be naturally integrated with the vehicle's electronic control system, enhancing the intelligent cabin experience and contributing to overall vehicle weight reduction and cost reduction.

[0062] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A table structure for a car seat, characterized in that, include: Base (100); A tabletop (200) is disposed on the rear side of the base (100); A linkage assembly (300) is disposed between the base (100) and the tabletop (200); the linkage assembly (300) includes: A drive arm (301) is rotatably mounted on the base (100) at one end and rotatably mounted on the table (200) at the other end. A rotating arm (302) is provided, one end of which is rotatably mounted on the base (100), and the other end of which is slidably and rotatably mounted on the table (200). A drive assembly (400) is disposed on the base (100); the drive assembly (400) is configured to drive the drive arm (301) and the rotating arm (302) to rotate. The tabletop (200) is configured to move between a first position and a second position under the drive of the drive arm (301) and the rotating arm (302) which rotate in opposite directions or move in opposite directions; the tabletop (200) in the first position is attached to the base (100), and the tabletop (200) in the second position extends backward and is set horizontally.

2. The table structure of the car seat according to claim 1, characterized in that, The two ends of the tabletop (200) are designated as a first end (201) and a second end (202). When the tabletop (200) is in the first position, the first end (201) is positioned higher than the second end (202). The second plate end (202) is connected to the drive arm (301), and the drive arm (301) rotates upward to drive the table (200) to move to the second position.

3. The table structure of the car seat according to claim 2, characterized in that, The rotating arm (302) is positioned above the driving arm (301); when the table (200) moves to the second position, the rotating arm (302) falls from top to bottom onto the driving arm (301).

4. The table structure of the car seat according to claim 3, characterized in that, The rotating arm (302) is divided into a front rotating section (302-1) and a rear rotating section (302-2). The front rotating section (302-1) is connected to the base (100), and the rear rotating section (302-2) is connected to the table (200). The rear rotating section (302-2) bends downward relative to the front rotating section (302-1); when the table (200) moves to the second position, the rear rotating section (302-2) contacts the rotating arm (302).

5. The table structure of the car seat according to claim 1, characterized in that, The rotating arm (302) and the driving arm (301) are both connected to the side of the table (200); The side of the tabletop (200) is provided with a sliding groove (203), which extends from one end of the tabletop (200) to the other end; the end of the rotating arm (302) away from the base (100) is provided with a sliding shaft (302-3), which is located in the sliding groove (203).

6. The table structure of the car seat according to claim 1, characterized in that, The drive component (400) includes: The first gear (401) is provided with a drive shaft at one end of the drive arm (301), the drive shaft is provided on the base (100), and the first gear (401) is provided on the drive shaft; The second gear (402) is provided with a rotating shaft at one end of the rotating arm (302), the rotating shaft is provided on the base (100), and the second gear (402) is provided on the rotating shaft; the first gear (401) meshes with the second gear (402); A driver connected to the drive arm (301) to drive the drive arm (301) to rotate.

7. The table structure of the car seat according to claim 6, characterized in that, The number of effective teeth participating in meshing in the first gear (401) is The number of effective teeth participating in meshing in the second gear (402) is , Greater than .

8. The table structure of the automobile seat according to claim 7, characterized in that, The second gear (402) is a sector gear.

9. The table structure of the car seat according to claim 1, characterized in that, Two sets of the linkage assembly (300) are provided and are respectively located on both sides of the table (200); the two drive arms (301) and the two rotating arms (302) are coaxially connected by a synchronous shaft (500).

10. A vehicle, characterized in that, include: The vehicle body, inside which seats are provided; The table structure of the car seat as described in any one of claims 1 to 9 is disposed on the seat.

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