Seat frame of vehicle

Abstract

A seat frame of a vehicle. The seat frame comprises a seat cushion frame assembly (200), a backrest assembly (300), and lateral slide rails (500), wherein the seat cushion frame assembly (200) is configured to be rotatable relative to the lateral slide rails (500) to a folded position or a lift position to adapt to rotation of the backrest assembly (300), thereby enabling the seat frame to be in any one of a folded state, a lie-flat state, and a zero-gravity state, and the seat cushion frame assembly (200) is configured to be movable to a laterally displaced position along the lateral slide rails (500) in a lateral direction. While a seat backrest can be folded or flipped, the seat frame incorporates a seat lateral displacement function, and by performing adaptive design on the structure of the seat cushion frame assembly, a multi-directional adjustment function of the seat frame can be achieved, thereby meeting the requirements of different scenarios.

Description

Vehicle seat frame Technical Field

[0001] This disclosure relates to the field of accessories technology for vehicles, and more specifically to a seat frame for vehicles. Background Technology

[0002] As consumers increasingly demand higher functionality and comfort from vehicles, vehicle seats have been designed with various adjustment functions to improve passenger comfort, such as adjustable backrest angles (folding or flipping into a bed), seat cushion forward and backward movement, and zero-pressure seat cushion adjustment. This allows passengers to flexibly adjust the seat posture according to different needs to achieve optimal comfort.

[0003] However, existing vehicle seats have numerous components and complex structures to achieve these functions, and there is a possibility of interference with adjacent interior components during use, affecting passenger comfort. (Public content)

[0004] The purpose of this disclosure is to provide a seat frame to solve the problems in the prior art. This seat frame integrates seat back folding or flipping, seat cushion zero-pressure adjustment, and seat cushion lateral movement functions, improving seat comfort while being simple in structure, reliable in operation, easy to operate, and inexpensive.

[0005] Therefore, according to this disclosure, a seat frame for a vehicle is provided, the seat frame including a seat frame assembly, a backrest assembly and a side sliding rail, wherein the seat frame assembly is configured to rotate relative to the side sliding rail to a folded position or a raised position to accommodate the rotation of the backrest assembly so that the seat frame is in any one of a folded posture, a reclining posture and a zero-pressure posture, and the seat frame assembly is configured to move along the side sliding rail to a side-shifting position in the side-shifting direction.

[0006] Based on the above technical concept, this disclosure may further include any one or more of the following optional forms.

[0007] In some alternative forms, the seat frame assembly includes a seat frame side plate, a vertical plate fixedly connected to the lateral slide rail, and a pair of opposing linkage assemblies connected between the seat frame side plate and the vertical plate.

[0008] In some alternative forms, the linkage assembly includes a first link and a second link, wherein one end of the first link and the second link are pivotally connected to the seat frame side plate, and the other end is pivotally connected to the upright plate, respectively. The first link or the second link is driven to rotate the seat frame assembly relative to the lateral slide rail to a folded position or a rear-raised position, thereby adapting to the rotation of the backrest assembly so that the seat frame is in a folded or reclined position.

[0009] In some alternative forms, the linkage assembly includes a first link, a second link, and a third link, wherein one end of the first link and the second link are pivotally connected to the seat frame side plate, one end of the third link is pivotally connected to the first link, and the other ends of the second link and the third link are pivotally connected to the upright plate. The first link or the second link is driven to rotate the seat frame assembly relative to the side sliding rail to a folded position or a rear-raised position, thereby adapting to the rotation of the backrest assembly to place the seat frame in a folded or reclining posture; or the third link is driven to rotate the seat frame assembly relative to the side sliding rail to a forward-raised position, thereby adapting to the rotation of the backrest assembly to place the seat frame in a zero-pressure posture.

[0010] In some alternative forms, the linkage assembly includes a first link and a slide rail, one end of the first link being pivotally connected to the seat frame side plate and the other end being pivotally connected to the upright plate, the slide rail being disposed on the upright plate, and the rear end of the seat frame side plate being slidably connected to the slide rail. The first link is driven to rotate the seat frame assembly relative to the lateral slide rail to a folded position, thereby adapting to the rotation of the backrest assembly to put the seat frame in a folded posture.

[0011] In some alternative forms, the linkage assembly includes a first link, a third link, and a slide rail. One end of the first link is pivotally connected to the seat frame side plate, one end of the third link is pivotally connected to the first link, and the other end of the third link is pivotally connected to the upright plate. The rear end of the seat frame side plate is slidably connected to the slide rail. The first link is driven to rotate the seat frame assembly relative to the side sliding rail to a folded position, thereby adapting to the rotation of the backrest assembly to put the seat frame in a folded posture; or the third link is driven to rotate the seat frame assembly relative to the side sliding rail to a forward-lifted position, thereby adapting to the rotation of the backrest assembly to put the seat frame in a zero-pressure posture.

[0012] In some alternative configurations, the linkage assembly includes a first link and a third link, one end of the first link being pivotally connected to the seat frame side plate, one end of the third link being pivotally connected to the first link, and the other end of the third link being pivotally connected to the upright plate. The rear end of the seat frame side plate is pivotally connected to the upright plate. The third link is driven to rotate the seat frame assembly relative to the lateral sliding rail to a forward-lifted position, thereby adapting to the rotation of the backrest assembly to bring the seat frame into a zero-pressure posture.

[0013] In some alternative configurations, the backrest assembly is pivotally connected to the lateral slide rail so that the movement of the seat frame assembly is independent of the movement of the backrest assembly.

[0014] In some alternative embodiments, the seat frame further includes a seat basin assembly attached to the seat frame assembly. The seat basin assembly includes a seat basin frame and a fourth, fifth, and sixth link connecting the seat basin frame and the seat frame side plate. One end of the fourth and fifth links is pivotally connected to the seat basin frame, and one end of the sixth link is pivotally connected to the fourth link. The other ends of the fifth and sixth links are pivotally connected to the seat frame side plate. The fifth link is driven to rotate the seat basin frame relative to the seat frame assembly to a rear-raised position, thereby adapting to the rotation of the backrest assembly and placing the seat frame in a reclining posture; or the sixth link is driven to rotate the seat basin frame relative to the seat frame assembly to a forward-raised position, thereby adapting to the rotation of the backrest assembly and placing the seat frame in a zero-pressure posture.

[0015] In some alternative configurations, the backrest assembly is pivotally connected to the seat frame assembly such that movement of the seat frame assembly drives movement of the backrest assembly.

[0016] The disclosed seat frame, in addition to enabling seat back folding or flipping, incorporates a seat side-shifting function. Through adaptive design of the seat frame assembly structure, it achieves multi-directional adjustment functions, including folding posture, reclining posture, and zero-pressure posture, to meet the needs of different scenarios. For example, while the backrest assembly rotates and folds towards the seat frame assembly, the seat frame assembly can also rotate relative to the side-shifting rail to a folded position, facilitating a closer folding of the backrest assembly towards the seat frame assembly at a small angle; or, while the backrest assembly rotates and flips away from the seat frame assembly, the seat frame assembly can be raised towards the front of the vehicle, thus achieving a zero-pressure posture to provide even and comfortable support for the occupant's legs, ensuring that the areas of the occupant's body in prolonged contact with the seat in a reclining posture are in a pressure-free, suspended state, reducing body pressure; or, while the backrest assembly rotates and flips away from the seat frame assembly, the seat frame assembly can also be raised towards the front of the vehicle, achieving a zero-pressure posture to provide even and comfortable support for the occupant's legs, ensuring that the areas of the occupant's body in prolonged contact with the seat in a reclining posture are in a pressure-free, suspended state, reducing body pressure; or, while the backrest assembly can also rotate and fold towards the seat frame assembly, the seat frame assembly can also rotate relative to the side-shifting rail to achieve a folding position, facilitating a closer folding position. While rotating and flipping away from the seat frame assembly, the seat frame assembly is raised towards the rear of the vehicle, making its upper surface roughly flush with the surface of the backrest assembly, thus improving lumbar comfort when the occupant is in a reclining position. Furthermore, in either of these scenarios, the seat frame assembly can move along a lateral sliding rail in the lateral direction to achieve lateral movement, thereby preventing interference with surrounding structural components in reclining and / or zero-pressure positions, and allowing for a folded position combined with the rear seats to create a large bed scenario, ensuring stability and comfort during use. The seat frame structure disclosed herein is compact, simple, reliable, and inexpensive, applicable to various situations, and meets diverse user needs. Attached Figure Description

[0017] Other features and advantages of this disclosure will be better understood through the following detailed description of alternative embodiments in conjunction with the accompanying drawings, in which the same reference numerals identify the same or similar parts, wherein:

[0018] Figure 1 is a schematic diagram of the vehicle seats, showing two seats arranged in parallel in the design posture;

[0019] Figure 2 is a schematic diagram of the positional relationship between the seat and the vehicle body structure when in the design posture;

[0020] Figure 3 is a schematic diagram showing the positional relationship between the seat in Figure 2 and the vehicle body structure when the seat is in a lateral displacement zero-pressure posture;

[0021] Figure 4 is a side view of a seat frame in a designed posture according to an embodiment of the present disclosure;

[0022] Figure 5A is a schematic diagram of the vehicle seat of Figure 1 in a lateral folding posture based on the seat frame of this disclosure;

[0023] Figure 5B is a schematic diagram of the vehicle seats and rear seats being assembled into a bed when Figure 5A is in the lateral folding posture;

[0024] Figure 6A is a simplified schematic diagram of one embodiment of the seat frame in Figure 4;

[0025] Figure 6B is a simplified schematic diagram of the seat frame in Figure 6A in a lateral folding posture;

[0026] Figure 7A is a simplified schematic diagram of another embodiment of the seat frame in Figure 4;

[0027] Figure 7B is a simplified schematic diagram of the seat frame in Figure 7A in a lateral folding posture;

[0028] Figure 8A is a simplified schematic diagram of another embodiment of the seat frame in Figure 4;

[0029] Figure 8B is a simplified schematic diagram of the seat frame in Figure 8A in a lateral folding posture;

[0030] Figure 9A is a simplified schematic diagram of another embodiment of the seat frame in Figure 4;

[0031] Figure 9B is a simplified schematic diagram of the seat frame in Figure 9A in a lateral folding posture;

[0032] Figure 10A is a schematic diagram of the vehicle seat of Figure 1 in a lateral reclining posture based on the seat frame of this disclosure;

[0033] Figure 10B is a side view of the vehicle seat in Figure 10A in a side-shifted, reclining position;

[0034] Similar to Figure 7A, Figure 11A is a simplified schematic diagram of one implementation of the seat frame of Figure 10A in a designed posture;

[0035] Figure 11B is a simplified schematic diagram of the seat frame in Figure 11A when it is in a lying flat position and in a lateral zero-pressure position.

[0036] Figure 12A is a simplified schematic diagram of another implementation of the seat frame of Figure 10A in the designed posture;

[0037] Figure 12B is a simplified schematic diagram of Figure 12A in a lying flat position and in a lateral zero-pressure position;

[0038] Similar to Figure 9A, Figure 13A is a simplified schematic diagram of another implementation of the seat frame of Figure 10A in the designed posture;

[0039] Figure 13B is a simplified schematic diagram of Figure 13A in a lying flat position and in a lateral zero-pressure position;

[0040] Similar to Figure 8A, Figure 14A is a simplified schematic diagram of another implementation of the seat frame of Figure 10A in the designed posture;

[0041] Figure 14B is a simplified schematic diagram of Figure 14A in a reclining position with the upper surface of the seat frame assembly and the surface of the backrest assembly roughly flush.

[0042] Similar to Figure 9A, Figure 15A is a simplified schematic diagram of another implementation of the seat frame of Figure 10A in the designed posture.

[0043] Figure 15B is a simplified schematic diagram of Figure 15A in a reclining position with the surface of the seat frame assembly and the surface of the backrest assembly roughly flush.

[0044] Figure 16A is a simplified schematic diagram of another implementation of the seat frame of Figure 10A in the designed posture;

[0045] Figure 16B is a simplified schematic diagram of Figure 16A in a reclining position with the surface of the seat frame assembly and the surface of the backrest assembly roughly flush. Detailed Implementation

[0046] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using this disclosure, and are not intended to limit the scope of this disclosure. The descriptions of the structural positions of various components, such as up, down, top, bottom, etc., are not absolute but relative. These directional descriptions are appropriate when the various components are arranged as shown in the figures, but they change accordingly when the positions of the various components in the figures change.

[0047] In this document, the expressions “including” or similar expressions such as “having” are open-ended and do not exclude additional unlisted elements or functions.

[0048] In this article, terms such as “first,” “second,” “third,” etc., are not used to specify the order of events or the number of components, unless otherwise stated.

[0049] In this document, unless otherwise explicitly specified, the terms "connection" and "attachment" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. The term "fixed connection" can be understood as a fixed connection achieved in any way, including but not limited to welding or other fixed connections using fasteners. Those skilled in the art can understand the specific meaning of the above terms in this document according to the specific circumstances.

[0050] It should be understood that although the embodiments of the seat frame and seat described in conjunction with the accompanying drawings are described in relation to vehicles, the term "vehicle" as used herein includes, but is not limited to, vehicles, ships, aircraft, etc., wherein "vehicle" includes fuel vehicles, hybrid vehicles, electric vehicles, hydrogen-powered vehicles, etc., and can be of various models, without limitation herein.

[0051] To improve passenger comfort, existing vehicle seats typically offer multiple adjustment functions, such as adjustable backrest tilt angle, seat cushion fore-and-aft movement, and zero-pressure seat cushion adjustment, allowing passengers to flexibly adjust the seat posture according to different needs. However, in implementing these adjustment functions, interference between the seat and adjacent interior components can occur, affecting passenger comfort. For example, as shown in Figures 1 and 2, the vehicle seat is arranged on a long slide rail 100 along the longitudinal direction X of the vehicle to allow the seat frame to move along the slide rail 100 in the longitudinal direction X. Here, the longitudinal direction of the vehicle is along the direction of travel, also known as the fore-and-aft direction, to facilitate fore-and-aft adjustment of the seat position. When the seat back needs to be folded back into a bed, in area A, the backrest interferes with the vehicle body side panel V. Especially when the seat has a zero-pressure function, the folding backrest and the zero-pressure lifting of the seat cushion interfere with the vehicle body side panel, making it impossible to smoothly achieve a lying-flat or zero-pressure posture. The inventors discovered that, regarding the spacing between vehicle seats, as shown in Figure 1, if the two seats can be moved laterally closer together to reduce the spacing between them, for example, by moving the two seats laterally closer together along the lateral direction Y in Figure 3, where the lateral direction Y is the width direction or lateral direction of the vehicle, also known as the left-right direction, as shown in part B of Figure 3, this method can effectively avoid interference between the backrest flipping backward and the side wall V of the vehicle body during the zero-pressure lifting of the seat cushion.

[0052] Therefore, this disclosure aims to propose a seat frame that integrates functions such as folding, zero-pressure, and lateral movement, avoiding interference with adjacent vehicle interior components during seat adjustment. Furthermore, by optimizing the seat frame structure layout and linkage relationships, the seat with this frame achieves diversified functions while improving occupant comfort. It should be understood that the functions implemented by the seat frame in the following description are exemplified by lateral folding, lateral front zero-pressure, or lateral rear lifting. Depending on different needs, the scenarios applicable to the seat frame based on the concept of this disclosure include, but are not limited to, lateral movement, folding, zero-pressure, lateral movement combined with folding, and lateral movement combined with zero-pressure.

[0053] Referring specifically to one embodiment shown in Figure 4, the seat frame of this disclosure includes a seat frame assembly 200, a backrest assembly 300, and a side-shifting slide rail 500, which extends along the lateral shifting direction Y. It is conceivable that the side-shifting slide rail 500 can also be directly mounted on the vehicle floor. The lateral shifting direction Y can also be an oblique direction at an angle to the length direction of the vehicle, to accommodate the oblique position adjustment of the seat. Advantageously, the seat frame assembly 200 is configured to rotate relative to the side slide rail 500 to a folded or raised position to accommodate the rotation of the backrest assembly 300, placing the seat frame in any of the following positions: folded, reclined, or zero-pressure. Specifically, when the backrest assembly 300 is folded forward, the seat frame assembly 200 can adaptively rotate to the folded position, enabling it to be combined with the rear seats to form a bed. Alternatively, when the backrest assembly 300 is flipped backward, the seat frame assembly 200 can adaptively rotate to a forward or rearward raised position, improving leg and / or lumbar comfort for the occupant in a reclined position when flipped back into a bed. Furthermore, the seat frame assembly 200 is configured to move along the side slide rail 500 to a lateral position in the lateral direction Y to avoid interference with the vehicle side panels during folding or zero-pressure lifting of the seat frame assembly 200 and during the flipping of the backrest assembly 300. In this way, the seat frame disclosed herein effectively avoids interference with the vehicle body sidewalls during seat adjustment by providing a lateral shift function. Furthermore, the rotation of the seat frame assembly 200 relative to the lateral shift rail 500 allows for a smaller angle folding of the backrest in a forward-folding position, or for the upper surface of the seat to be approximately flush with the backrest surface in a reclining position. All of these contribute to providing comfort for vehicle occupants in bed-like scenarios. This will be described in more detail below.

[0054] Specifically, the seat frame assembly 200 may include a seat frame side plate 230, a vertical plate 201 fixedly connected to the lateral slide rail 500, and a pair of opposing linkage assemblies connected between the seat frame side plate 230 and the vertical plate 201. In the embodiment illustrated in FIG4, the linkage assembly includes a pair of opposing linkage assemblies arranged along the vehicle width direction. This pair of linkage assemblies has a symmetrical structure, and for simplicity, only one side of the linkage assembly will be described below. Depending on different needs, the linkage assembly can be constructed in different forms, thereby realizing different seat frame adjustment functions.

[0055] In the embodiment illustrated in Figure 4, the linkage assembly includes a first link 210, a second link 220, and a third link 250. One end of the first link 210 and the second link 220 are pivotally connected to the seat frame side plate 230, and one end of the third link 250 is pivotally connected to the first link 210. The other ends of the second link 220 and the third link 250 are pivotally connected to the upright plate 201 so that they can rotate relative to the upright plate 201. Thus, the seat frame disclosed herein can realize the functions of folding and raising the seat cushion. The first link 210 or the second link 220 can be driven to rotate the seat frame assembly 200 relative to the side slide rail 500 to the folded position or the rear raised position. That is, the end of the seat frame assembly 200 near the backrest assembly 300 (i.e. the end facing the rear of the vehicle) can be driven to rotate and raise relative to the side slide rail, thereby adapting to the rotation of the backrest assembly 300 so that the seat frame is in a folded or reclining position. Alternatively, the third link 250 can be driven to rotate the seat frame assembly 200 relative to the side slide rail 500 to the front raised position. That is, the end of the seat frame assembly 200 away from the backrest assembly 300 (i.e. the end facing the front of the vehicle) can be driven to rotate and raise relative to the side slide rail, thereby adapting to the rotation of the backrest assembly 300 so that the seat frame is in a zero-pressure position.

[0056] In some embodiments, the seat frame may further include a seat basin 400, which is fixed to the upper part of the seat frame assembly 200. Thus, the seat frame assembly 200 is constructed in a frame shape and, when the third link 250 is included, has a five-bar linkage structure as shown in FIG. 4, consisting of the seat frame side plate 230, the first link 210, the second link 220, the third link 250, and the upright plate 201.

[0057] It should be understood that, in order to achieve the following: the seat frame assembly 200 rotating relative to the lateral slide rail 500 in a folded position; the seat frame assembly 200 moving laterally in the lateral direction Y; and the seat frame assembly 200 rotating relative to the lateral slide rail 500 in a raised position, the seat frame is correspondingly provided with a drive mechanism. The drive mechanism can take any suitable form, and no restriction is placed here. Furthermore, regardless of the posture of the seat frame assembly 200, the movement of the seat frame assembly in all directions is advantageously independent of the drive mechanism.

[0058] Advantageously, the seat frame assembly 200 is separated from the backrest assembly 300, as shown in Figure 6A. The backrest assembly 300 is pivotally connected to the backrest bracket 310, which is connected to the side sliding rail 500 and separated from the seat frame assembly 200. This makes the movement of the seat frame assembly 200 independent of the forward or backward folding motion of the backrest assembly 300, without interfering with each other. In particular, when folding the seat frame assembly 200, it can rotate forward relative to the side sliding rail 500 to be closer to the side sliding rail 500 while the backrest assembly 300 folds downward, providing more downward folding space for the backrest assembly 300. For example, the angle between the backrest assembly 300 and the seat frame assembly 200 can be less than 5 degrees, so that the seat frame in the folded position can present a relatively flat surface, as shown in Figure 5A. In existing methods, when the seat back needs to be folded, the backrest usually cannot achieve a small folding angle; that is, the angle between the backrest and the seat cushion is usually greater than 15 degrees. Therefore, the method disclosed in this paper can achieve a smaller folding angle for the backrest while it is in a forward-folding posture, thereby creating a double bed effect by splicing the two seats with the rear seats, as shown in Figure 5B.

[0059] The following description, in conjunction with Figures 6A to 16B, describes the movement and functions of a seat frame constructed with different linkage assemblies in different postures.

[0060] Referring first to Figures 6A and 6B, corresponding to the design posture shown in Figure 4, in this embodiment, the linkage assembly includes a first link 210 and a slide groove 260. One end of the first link 210 is pivotally connected to the seat frame side plate 230, and the other end is pivotally connected to the upright plate 201. The slide groove 260 is disposed on the upright plate 201, and the rear end of the seat frame side plate 230 is slidably connected to the slide groove 260. In other words, the linkage assembly in this embodiment does not need to implement, for example, a zero-pressure lifting function. In the design posture, the angle between the backrest assembly 300 and the seat frame assembly 200 is approximately 100 to 120 degrees, allowing the occupant to sit normally.

[0061] When the seat back needs to be folded forward to form a bed with the rear seats, especially when the two seats are moved sideways to achieve a double bed function as shown in Figures 5A and 5B, the backrest assembly 300 rotates counterclockwise to fold as shown in Figure 6B. Simultaneously, the first link 210 of the seat frame assembly 200 is driven to rotate the seat frame assembly 200 relative to the side-shifting rail 500 to the folding position. This adapts to the rotation of the backrest assembly 300, placing the seat frame in a folded posture, and the seat frame assembly 200 can move laterally along the side-shifting direction. Thus, after the backrest assembly 300 and seat frame assembly 200 are folded, the angle between them can be less than 5 degrees, meeting the comfort requirements of passengers in a double bed scenario.

[0062] Figures 7A and 7B illustrate another embodiment of the seat frame assembly. The difference from the embodiment shown in Figure 6A is that the first link 210 is pivotally connected to the upright plate 201 via the third link 250. That is, the seat frame in this embodiment can achieve a zero-pressure lifting function. Specifically, one end of the first link 210 is pivotally connected to the seat frame side plate 230, one end of the third link 250 is pivotally connected to the first link 210, and the other end of the third link 250 is pivotally connected to the upright plate 201. The rear end of the seat frame side plate 230 is slidably connected to the slide groove 260. When the seat back needs to be folded forward to form a bed with the rear seats, zero pressure is not required. Similarly, the seat frame assembly 200 is driven by the first link 210 to rotate relative to the side sliding rail 500 to the folding position, thereby adapting to the rotation of the backrest assembly 300 to put the seat frame in a folded posture. Furthermore, the seat frame assembly 200 can move laterally in the side sliding direction.

[0063] Figures 8A and 8B illustrate a seat frame assembly according to another embodiment. In this embodiment, the linkage assembly includes a first linkage 210 and a second linkage 220, wherein one end of the first linkage 210 and the second linkage 220 are pivotally connected to the seat frame side plate 230, and the other end is pivotally connected to the upright plate 201, respectively. When the seat back needs to be folded forward to be combined with the rear seats to form a bed, the first linkage 210 or the second linkage 220 can be driven to rotate the seat frame assembly 200 relative to the lateral sliding rail 500 to the folding position. Specifically, in the illustrated embodiment, the second linkage 220 rotates relative to the lateral sliding rail 500, thereby driving the first linkage 210 to rotate in the same direction to the folding position, and the seat frame assembly 200 can move laterally along the lateral direction.

[0064] Figures 9A and 9B illustrate another embodiment of the seat frame assembly. The difference from the embodiment shown in Figure 8A is that the first link 210 is pivotally connected to the upright plate 201 via the third link 250. That is, the seat frame in this embodiment can achieve a zero-pressure lifting function. Specifically, one end of the first link 210 and the second link 220 are pivotally connected to the seat frame side plate 230, one end of the third link 250 is pivotally connected to the first link 210, and the other ends of the second link 220 and the third link 250 are pivotally connected to the upright plate 201. When the seat back needs to be folded forward to form a bed with the rear seats, zero pressure is not required. The seat frame assembly 200 is similarly driven by the first link 210 or the second link 220 to rotate relative to the side sliding rail 500 to the folding position. In the illustrated embodiment, the second link 220 rotates relative to the lateral slide rail 500, thereby driving the first link 210 to rotate in the same direction to the folded position, and the seat frame assembly 200 can move laterally along the lateral direction.

[0065] When the seat back needs to be flipped back to achieve a reclining posture, especially when the two seats move sideways to close together as shown in Figures 10A and 10B to achieve a double bed function and avoid interference with the vehicle body sidewalls, Figure 11A shows a seat frame assembly similar to that in Figure 7A. In this configuration, the backrest assembly 300 flips clockwise as shown in Figure 11B. Upon starting at zero pressure, the third link 250 is driven to rotate the seat frame assembly 200 clockwise relative to the side-shifting rail 500, and drives the first link 210, which is pivotally connected to it, upwards. This raises the first link 210 to a forward-raised position, thus adapting to the rotation of the backrest assembly 300 and placing the seat frame in a zero-pressure posture. Compared to the initial state, the front end of the seat frame assembly 200 is raised by, for example, 10 to 20 degrees, allowing the seat to ergonomically provide even and comfortable support for the occupant's legs, reducing body pressure and improving comfort. Meanwhile, the seat frame assembly 200 can move along the lateral direction, enabling the two seats to be brought together to achieve the double bed function shown in Figure 10A.

[0066] Figures 12A and 12B illustrate a seat frame assembly according to another embodiment. In this embodiment, the linkage assembly includes a first linkage 210 and a third linkage 250. One end of the first linkage 210 is pivotally connected to the seat frame side plate 230, and one end of the third linkage 250 is pivotally connected to the first linkage 210. The other end of the third linkage 250 is pivotally connected to the upright plate 201, and the rear end of the seat frame side plate 230 is pivotally connected to the upright plate 201. When the seat back needs to be flipped back to achieve a reclining posture and activate zero pressure, the third linkage 250 is driven to rotate the seat frame assembly 200 clockwise relative to the side sliding rail 500, and to move the pivotally connected first linkage 210 upward, thereby raising the first linkage 210 to a forward-raised position to adapt to the rotation of the backrest assembly 300 so that the seat frame is in a zero-pressure posture to achieve the zero-pressure function.

[0067] Figure 13A shows a seat frame assembly similar to that in Figure 9A. When the seat back needs to be flipped back to achieve a reclining posture and activate zero pressure, the third link 250 is driven to rotate the seat frame assembly 200 clockwise relative to the side slide rail 500, and to move the first link 210 pivotally connected to it upward, thereby raising the first link 210 to the forward-raised position, thus adapting to the rotation of the backrest assembly 300 to put the seat frame in a zero-pressure posture to achieve the zero-pressure function.

[0068] In some embodiments, the seat frame assembly of the seat frame disclosed herein is advantageously configured to rotate relative to the lateral sliding rail until it is substantially flush with the surface of the backrest assembly. In other words, on the one hand, when the backrest assembly is folded forward, the surface of the backrest assembly and the seat frame in the folded position can present a relatively flat surface, thereby improving the comfort of the vehicle occupants when combined with the rear seats to create a large bed effect. On the other hand, when the backrest assembly is flipped backward into a bed, there is a height difference between the rear end of the seat cushion and the lower end of the backrest. This height difference causes the occupant's lower back to be unsupported when in a lying position, resulting in discomfort. Therefore, when the backrest assembly rotates away from the seat frame assembly, that is, when it is flipped backward, the seat frame assembly can rotate relative to the lateral sliding rail until it is substantially flush with the surface of the backrest assembly. Specifically, the end of the seat frame assembly near the rear of the vehicle can also be driven to lift so that the upper surface of the seat frame assembly is substantially flush with the surface of the backrest assembly, thereby improving the comfort of the occupants in a lying position.

[0069] Figures 14A to 16B illustrate several exemplary configurations of the seat assembly in which one end of the seat assembly near the rear of the vehicle is driven to lift.

[0070] Specifically, referring to Figure 14A, a seat frame assembly similar in arrangement to that in Figure 8A is shown. When the seat back needs to be flipped backward to achieve a reclining posture, the backrest assembly 300 flips clockwise as shown in Figure 14B. Simultaneously, as the backrest assembly 300 rotates away from the seat frame assembly, the first link 210 or the second link 220 is driven to rotate the seat frame assembly 200 relative to the lateral slide rail 500 to a raised position. In the illustrated embodiment, the second link 220 can be driven to rotate counterclockwise away from the backrest assembly 300, thereby causing the seat frame side plate 230 and the first link 210, which are pivotally connected thereto, to move upward to the rear raised position. This adapts to the rotation of the backrest assembly 300, placing the seat frame in a reclining posture, and raising the upper surface of the seat frame assembly, especially the end closest to the backrest assembly, to approximately flush with the surface of the backrest assembly 300. Of course, in this embodiment, the seat frame assembly 200 can also move along the lateral direction while being raised.

[0071] Figure 15A shows a seat frame assembly similar to that in Figure 9A or Figure 13A. When the seat back needs to be flipped back to achieve a reclining posture, the backrest assembly 300 flips clockwise as shown in Figure 15B. Simultaneously, the first link 210 or the second link 220 is driven to rotate the seat frame assembly 200 relative to the lateral slide rail 500 to a rear-raised position. In the illustrated embodiment, the second link 220 can be driven to rotate counterclockwise, thereby causing the seat frame side plate 230 and the first link 210, which are pivotally connected thereto, to move upward to accommodate the rotation of the backrest assembly 300, so that the seat frame is in a reclining posture. This raises the upper surface of the seat frame assembly, especially the end closest to the backrest assembly, to approximately flush with the surface of the backrest assembly 300. Similarly, the seat frame assembly 200 can also move in the lateral direction while being raised.

[0072] In some embodiments, the seat frame may further include a seat basin assembly attached to the seat frame assembly. As shown in Figures 16A and 16B, the seat basin assembly includes a seat basin frame 270 and a fourth link 271, a fifth link 272, and a sixth link 273 connected between the seat basin frame 270 and the seat frame side plate 230. One end of the fourth link 271 and the fifth link 272 are pivotally connected to the seat basin frame 270, one end of the sixth link 273 is pivotally connected to the fourth link 271, and the other ends of the fifth link 272 and the sixth link 273 are pivotally connected to the seat frame side plate 230. When the backrest assembly is rotated clockwise away from the seat frame assembly as shown in Figure 16B, the fifth link 272 can be driven to rotate the seat basin frame 270 relative to the seat frame assembly 200 to a rear-raised position. This adapts to the rotation of the backrest assembly 300, placing the seat frame in a reclining posture so that the upper surface of the seat basin frame 270 near the backrest assembly is approximately flush with the surface of the backrest assembly. In an alternative embodiment, the sixth link 273 can be driven to rotate the seat basin frame 270 relative to the seat frame assembly 200 to a front-raised position, adapting to the rotation of the backrest assembly 300 and placing the seat frame in a zero-pressure posture. Further details are omitted here. The configuration shown in Figures 16A and 16B can be applied, for example, to situations where the seat frame assembly and backrest assembly are not separated.

[0073] Regardless of the construction method of the seat frame assembly, the seat frame disclosed herein achieves stable and reliable movement of related components within a limited space through a simple structure and fewer parts. It not only integrates functions such as lateral movement, folding, and zero-pressure adjustment, but also provides a larger adjustment range while avoiding component interference, meeting various application scenarios such as double beds or twin beds, and improving occupant comfort. Depending on different needs, seats with the seat frame disclosed herein can reliably meet diverse adjustment requirements while maintaining stability and comfort.

[0074] It should be understood here that the embodiments shown in the figures only illustrate the optional architecture, shape, size and arrangement of the various optional components of the seat frame according to the present disclosure. However, they are only illustrative and not limiting. Other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present disclosure.

[0075] It should be noted that this disclosure (e.g., the disclosed concepts, etc.) has been described in the specification of this patent document and / or illustrated in the figures according to exemplary embodiments; the embodiments of this disclosure are presented by way of example only and are not intended to be a limitation on the scope of this disclosure. The structure and / or arrangement of the elements of the disclosed concepts embodied in this disclosure as described in the specification and / or illustrated in the figures are merely illustrative. Although exemplary embodiments of this disclosure have been described in detail in this patent document, it will be readily understood by those skilled in the art that equivalents, modifications, variations, etc., of the subject matter of the exemplary and alternative embodiments are possible and are considered to be within the scope of this disclosure; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of this disclosure. It should also be noted that various / other modifications, variations, substitutions, equivalents, alterations, omissions, etc., may be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, the order of process / method steps, operations, operating conditions, performance, materials, composition, combinations, etc.). All such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of this disclosure without departing from its scope; the scope of this disclosure is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.) described in the specification and / or figures of this patent document. Given that the claims of this patent document will be properly interpreted as covering the full scope of the subject matter of this disclosure (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.), it should be understood that the terminology used in this patent document is for the purpose of providing a description of the subject matter of exemplary embodiments and not as a limitation on the scope of this disclosure.

[0076] It should also be noted that, according to exemplary embodiments, this disclosure may include conventional techniques (e.g., techniques implemented and / or integrated in exemplary embodiments, modifications, variations, combinations, equivalents, etc.), or may include any other applicable techniques (now and / or in the future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such techniques (e.g., techniques implemented in the manner of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of this disclosure in this patent document.

Claims

1. A seat frame for a vehicle, characterized in that, The seat frame includes a seat frame assembly, a backrest assembly, and a side sliding rail. The seat frame assembly is configured to rotate relative to the side sliding rail to a folded position or a raised position to accommodate the rotation of the backrest assembly, so that the seat frame is in any one of a folded posture, a reclining posture, and a zero-pressure posture. The seat frame assembly is also configured to move along the side sliding rail in the side sliding direction to a side sliding position.

2. The seat frame of a vehicle according to claim 1, characterized by The seat frame assembly includes a seat frame side plate, a vertical plate fixedly connected to the lateral sliding rail, and a pair of connecting rod assemblies disposed opposite to each other between the seat frame side plate and the vertical plate.

3. The seat frame of a vehicle according to claim 2, characterized by The linkage assembly includes a first linkage and a second linkage, wherein one end of the first linkage and the second linkage are pivotally connected to the seat frame side plate, and the other end is pivotally connected to the upright plate, respectively. The first linkage or the second linkage is driven to rotate the seat frame assembly relative to the side sliding rail to a folded position or a rear-lifted position, thereby adapting to the rotation of the backrest assembly so that the seat frame is in a folded posture or a reclining posture.

4. The seat frame of a vehicle according to claim 2, characterized by, The linkage assembly includes a first link, a second link, and a third link. One end of the first link and the second link are pivotally connected to the seat frame side plate, and one end of the third link is pivotally connected to the first link. The other ends of the second link and the third link are pivotally connected to the upright plate. The first link or the second link is driven to rotate the seat frame assembly relative to the side sliding rail to a folded position or a rear-raised position, thereby adapting to the rotation of the backrest assembly so that the seat frame is in a folded or reclining posture; or the third link is driven to rotate the seat frame assembly relative to the side sliding rail to a forward-raised position, thereby adapting to the rotation of the backrest assembly so that the seat frame is in a zero-pressure posture.

5. The seat frame of a vehicle according to claim 2, wherein The linkage assembly includes a first linkage and a slide groove. One end of the first linkage is pivotally connected to the seat frame side plate, and the other end is pivotally connected to the upright plate. The slide groove is disposed on the upright plate, and the rear end of the seat frame side plate is slidably connected to the slide groove. The first linkage is driven to rotate the seat frame assembly relative to the side sliding rail to a folding position, thereby adapting to the rotation of the backrest assembly and causing the seat frame to be in a folded posture.

6. The seat frame of a vehicle according to claim 2, characterized by The linkage assembly includes a first link, a third link, and a slide groove. One end of the first link is pivotally connected to the seat frame side plate, one end of the third link is pivotally connected to the first link, and the other end of the third link is pivotally connected to the upright plate. The rear end of the seat frame side plate is slidably connected to the slide groove. The first link is driven to rotate the seat frame assembly relative to the side sliding rail to a folding position, thereby adapting to the rotation of the backrest assembly and putting the seat frame in a folded posture. Alternatively, the third link can be driven to rotate the seat frame assembly relative to the lateral slide rail to a forward-lifted position, thereby adapting to the rotation of the backrest assembly and placing the seat frame in a zero-pressure posture.

7. The seat frame of a vehicle according to claim 2, characterized by, The linkage assembly includes a first link and a third link. One end of the first link is pivotally connected to the seat frame side plate, one end of the third link is pivotally connected to the first link, and the other end of the third link is pivotally connected to the upright plate. The rear end of the seat frame side plate is pivotally connected to the upright plate. The third link is driven to rotate the seat frame assembly relative to the side sliding rail to a forward-lifted position, thereby adapting to the rotation of the backrest assembly and placing the seat frame in a zero-pressure posture.

8. The seat frame of a vehicle according to any one of claims 3 to 7, characterized in that, The backrest assembly is pivotally connected to the lateral slide rail so that the movement of the seat frame assembly is independent of the movement of the backrest assembly.

9. The seat frame of a vehicle according to claim 2, characterized by, The seat frame also includes a seat basin assembly attached to the seat frame assembly. The seat basin assembly includes a seat basin frame and a fourth, fifth, and sixth link connecting the seat basin frame and the seat frame side plate. One end of the fourth and fifth links is pivotally connected to the seat basin frame, and one end of the sixth link is pivotally connected to the fourth link. The other ends of the fifth and sixth links are pivotally connected to the seat frame side plate. The fifth link is driven to rotate the seat basin frame relative to the seat frame assembly to a rear-raised position, thereby adapting to the rotation of the backrest assembly and placing the seat frame in a reclining posture; or the sixth link is driven to rotate the seat basin frame relative to the seat frame assembly to a front-raised position, thereby adapting to the rotation of the backrest assembly and placing the seat frame in a zero-pressure posture.

10. The seat frame of a vehicle according to claim 9, characterized by The backrest assembly is pivotally connected to the seat frame assembly so that the movement of the seat frame assembly drives the movement of the backrest assembly.

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