Vehicle seat with cushion lifting function

Abstract

The invention relates to a vehicle seat with a cushion lifting function, which is characterized in that the vehicle seat is provided with a cushion, the cushion is provided with a bearing assembly used for supporting a passenger and a seat frame assembly used for supporting the bearing assembly, the bearing assembly comprises a front bearing assembly, a rear bearing assembly, a rear bearing assembly and a lifting assembly, the front bearing assembly can do pivoting movement between an initial position and a lifting position relative to the seat frame assembly; the rear bearing component can pivotally move between an initial position and a lifting position relative to the seat frame assembly; the swing arm assembly is provided with a left swing arm and a right swing arm which are oppositely arranged, the left swing arm and the right swing arm are directly or indirectly hinged to the seat frame assembly, and the front bearing assembly and the rear bearing assembly are in driving connection with at least one of the left swing arm and the right swing arm; and the driving assembly can drive the at least one swing arm to swing, and through the swing motion of the at least one swing arm, the front bearing assembly and the rear bearing assembly can be driven to pivotally move between the initial position and the lifting position of the front bearing assembly and the rear bearing assembly.

Description

Technical Field

[0001] The present invention relates to a vehicle seat with a seat cushion lifting function. Background Art

[0002] Vehicle occupants have increasingly high requirements for the comfort and aesthetics of vehicle seats in different usage states.

[0003] When the occupant needs to take a short nap, the seat backrest is usually adjusted backward to varying degrees. When the backrest is adjusted to the fully reclined position, it can form a bed or a combined bed with the seat cushion, but there will be a problem of pressing against the waist at the transition due to the lack of a flat connection between the backrest and the seat cushion. For this, reference can be made to Figure 14 the vehicle seat 100 in the prior art shown. The vehicle seat 100 has a backrest 103 and a seat cushion 102. In the case of the fully reclined backrest 103, it can be seen that there is a height difference H between the seat cushion surface 149 and the backrest surface 150, and this height difference H will cause a problem of pressing against the waist of the occupant.

[0004] Some seat cushions have the functions of front lifting and rear lifting. However, on the one hand, these two functions are independent of each other and require separate motors and drive mechanisms for driving respectively, resulting in a high cost. On the other hand, after the rear lifting, the angle change between the rear load-bearing area and the front load-bearing area is too large, causing a large folding amplitude of the foam and seat cover on the seat cushion, resulting in wrinkles and affecting the aesthetics.

[0005] Some seat cushions' rear lifting function is realized by linkage with the backrest. However, due to the eccentric movement of the backrest, the seat cushion will shake when the backrest is adjusted, affecting the comfort. Summary of the Invention

[0006] The purpose of the present invention is to provide a vehicle seat with a seat cushion lifting function, which can at least solve one of the above-mentioned problems.

[0007] To achieve the above purpose, the present invention provides a vehicle seat with a seat cushion lifting function, characterized in that the vehicle seat has a seat cushion, and the seat cushion has a load-bearing assembly for supporting the occupant and a seat frame assembly for supporting the load-bearing assembly. The load-bearing assembly includes:

[0008] a front load-bearing component, which can pivot between its initial position and a lifted position relative to the seat frame assembly;

[0009] a rear load-bearing component, which can pivot between its initial position and a lifted position relative to the seat frame assembly;

[0010] A swing arm assembly, the swing arm assembly having a left swing arm and a right swing arm disposed opposite to each other, the left swing arm and the right swing arm being respectively directly or indirectly hinged to the seat frame assembly, and the front load-bearing assembly and the rear load-bearing assembly being respectively drivingly connected to at least one of the left swing arm and the right swing arm; and

[0011] A drive assembly, the drive assembly being capable of driving the at least one swing arm to swing, and by the swinging movement of the at least one swing arm, being capable of driving the front load-bearing assembly and the rear load-bearing assembly to pivot between their initial positions and their raised positions.

[0012] The seat cushion lifting function of the vehicle seat of the present invention includes the lifting function of the front load-bearing assembly and the lifting function of the rear load-bearing assembly, and their implementation can be achieved by driving the swing arm assembly to swing by the same drive assembly, with a simple structure and low cost.

[0013] Advantageously, the at least one swing arm is capable of swinging in two opposite swinging directions so as to respectively drive the front load-bearing assembly and the rear load-bearing assembly to pivot from their initial positions to their raised positions. That is to say, by driving the same swing arm to swing in different directions (clockwise or counterclockwise) respectively, the lifting of the front load-bearing assembly and the rear load-bearing assembly can be respectively achieved, saving parts and installation space. It can be conceived that the left swing arm and the right swing arm always swing in the same direction (clockwise or counterclockwise), for example, synchronously.

[0014] Advantageously, the front load-bearing assembly includes a front link mechanism, the front link mechanism being drivingly connected to the at least one swing arm, and by the swinging movement of the at least one swing arm, being capable of driving the front link mechanism to pivot, and by the pivoting movement of the front link mechanism, being capable of driving the front load-bearing assembly to pivot between its initial position and its raised position; and / or

[0015] The rear load-bearing assembly includes a rear bracket mechanism, the rear bracket mechanism being drivingly connected to the at least one swing arm, and by the swinging movement of the at least one swing arm, being capable of driving the rear bracket mechanism to pivot, and by the pivoting movement of the rear bracket mechanism, being capable of driving the rear load-bearing assembly to pivot between its initial position and its raised position. The "driving connection" between two components can be understood as that a driving effect of one component on the other can be achieved through a connection relationship between the two components, such as a direct or indirect connection via an intermediate transmission member (such as a link).

[0016] Advantageously, the at least one swing arm altogether has at least one front chute and at least one rear chute, the front chute having a curved driving groove section, and the rear chute having a curved driving groove section, wherein,

[0017] The front link mechanism can be slidably hinged in the driving groove section of the front chute. By sliding the front link mechanism in the driving groove section of the front chute, the front load-bearing assembly can be driven to pivot between its initial position and the lifting position, and / or

[0018] The rear bracket mechanism can be slidably hinged in the driving groove section of the rear chute. By sliding the rear bracket mechanism in the driving groove section of the rear chute, the rear load-bearing assembly can be driven to pivot between its initial position and the lifting position. Here, not only can the front and rear load-bearing assemblies be driven to lift through the driving groove section, but also the lifting distance can be predetermined by setting the direction and length of the driving groove section.

[0019] Advantageously, the front chute has an arc-shaped avoidance groove section adjacent to its driving groove section, and the front link mechanism can be slidably hinged in the avoidance groove section of the front chute, and / or the rear chute has an arc-shaped avoidance groove section adjacent to its driving groove section, and the rear bracket mechanism can be slidably hinged in the avoidance groove section of the rear chute. Wherein, during the sliding of the front link mechanism in the driving groove section of the front chute, the rear bracket mechanism slides in the avoidance groove section of the rear chute, and / or during the sliding of the rear bracket mechanism in the driving groove section of the rear chute, the front link mechanism slides in the avoidance groove section of the front chute. Here, not only can avoidance be achieved through the avoidance groove section, but also stable support for each link mechanism can be realized, improving the stability of the entire seat cushion.

[0020] Advantageously, the driving groove section and the avoidance groove section of the front chute have opposite bending directions, and / or the driving groove section and the avoidance groove section of the rear chute have opposite bending directions. The design of the two with reverse bending makes the pressure angle larger and the stability of the lifting mechanism better.

[0021] Advantageously, the left swing arm has a front chute and a rear chute, and the right swing arm has a front chute and a rear chute; or,

[0022] One of the left swing arm and the right swing arm has a front chute, and the other of the left swing arm and the right swing arm has a rear chute; or,

[0023] One of the left swing arm and the right swing arm has a front chute and a rear chute, and the other of the left swing arm and the right swing arm does not have a front chute and a rear chute; or,

[0024] One of the left swing arm and the right swing arm has a front chute and a rear chute, and the other of the left swing arm and the right swing arm has a front chute or a rear chute.

[0025] Advantageously, the front load-bearing assembly is hingedly connected to the rear load-bearing assembly at the rear side, such that during the pivotal movement of the rear load-bearing assembly between its initial position and the lifted position, the rear load-bearing assembly can drive the front load-bearing assembly to move together from the rear side. This is very advantageous because the angular change between the front load-bearing assembly and the rear load-bearing assembly during the lifting of the rear load-bearing assembly can be kept very small, which can significantly reduce the deformation of the foam and the seat cover covering them, and increase the aesthetics of the seat surface.

[0026] Advantageously, the front load-bearing assembly is hingedly connected to the seat frame assembly at the rear side, such that during the pivotal movement of the rear load-bearing assembly between its initial position and the lifted position, the front load-bearing assembly remains stationary. This is particularly suitable for the case where the rear lifting angle (limit value) is small and has little impact on aesthetics.

[0027] Advantageously, during the pivotal movement of the front load-bearing assembly between its initial position and the lifted position, the rear load-bearing assembly remains stationary. This is particularly suitable for the case where the front lifting angle (limit value) is small and has little impact on aesthetics.

[0028] Advantageously, the rear bracket mechanism has two opposed rear lifting brackets. The front load-bearing assembly further includes a front seat pan, and the front seat pan is respectively hingedly connected to the first hinge connection points of the two rear lifting brackets at the rear side thereof, and the two rear lifting brackets are directly or indirectly hingedly connected to the seat frame assembly at their second hinge connection points in front of the first hinge connection points. Thus, it is ensured that when the rear bracket of the seat pan pivots and lifts from the rear side, the front seat pan is driven to lift from the rear side to keep the angular change between them very small, ensuring the aesthetics of the seat surface.

[0029] In this article, "directly hingedly connected" to the seat frame assembly can be understood as directly hingedly connected to the original components of the seat frame assembly, such as the upper side plate; and "indirectly hingedly connected" to the seat frame assembly can be understood as hingedly connected to the original components of the seat frame assembly through an intermediate component, such as a fixed bracket, that is, first hingedly connected to the intermediate component and then the intermediate component is fixed, such as welded or screwed, to the original components of the seat frame assembly.

[0030] Advantageously, at least one of the two rear lifting brackets is drivingly connected to the at least one swing arm at its third hinge connection point behind the second hinge connection point. Thus, the pivotal lifting or sinking of the rear bracket of the seat pan can be driven by the swinging movement of the swing arm.

[0031] Advantageously, the front link mechanism has at least one set of a first front lifting link and a second front lifting link that are fixed relative to each other and angled with respect to each other. The first front lifting link is directly or indirectly hingedly connected to the seat frame assembly, and the second front lifting link is drivingly connected to the at least one swing arm. Thus, the front link mechanism can be driven to pivotally lift or sink by the swinging motion of the swing arm. "At least one set of a first front lifting link and a second front lifting link" means that one set or two sets can be provided. For example, in the case of two sets, one set of a first front lifting link and a second front lifting link is provided on each of the left and right sides, and the second front lifting links on the left and right sides are respectively drivingly connected to the sliding grooves of the left and right swing arms; in the case of one set, this set of a first front lifting link and a second front lifting link is provided on the left or right side, and this second front lifting link is drivingly connected to the sliding groove of the swing arm on that side, while on the other side, at least the second front lifting link may not be provided because it does not have to be drivingly connected to the sliding groove of the swing arm (for example, in the case where there is no front sliding groove provided for the swing arm on that side), and in this case, the first front lifting link can be retained.

[0032] Advantageously, the first front lifting link and the second front lifting link are respectively fixed to a synchronous lifting rod. The front bearing assembly has a front seat pan, and at least one fixing block with a guide groove is fixed on the front seat pan, and the synchronous lifting rod is inserted into the guide groove. Wherein, during the pivotal movement of the front bearing assembly between its initial position and the lifting position, the synchronous lifting rod can slide back and forth within the guide groove. This ensures that the front link mechanism can drive the front seat pan to pivotally lift or sink.

[0033] Advantageously, the front bearing assembly has a front seat pan, and the front seat pan is slidably hingedly connected to the rear bracket mechanism at its rear side. During the pivotal movement of the front bearing assembly between its initial position and the lifting position, the front seat pan can pivot and slide back and forth relative to the rear bracket mechanism at its rear side.

[0034] Advantageously, an anti-wear bushing is fixedly provided in at least one of the front sliding groove and the rear sliding groove, and at least one of the front link mechanism and the rear bracket mechanism correspondingly slides within the anti-wear bushing by means of a guide pin; or,

[0035] At least one of the front link mechanism and the rear bracket mechanism slides within at least one of the corresponding front sliding groove and the rear sliding groove by means of a bolt - bushing combination, and the bolt - bushing combination includes a bolt and a bushing sleeved on the bolt, and the bushing is embedded in the at least one sliding groove and can slide along it.

[0036] Advantageously, the swing arm assembly further has a connecting shaft that fixedly connects the left swing arm and the right swing arm to each other.

[0037] Advantageously, the drive assembly is directly or indirectly fixed to the seat frame assembly on its fixed side and directly or indirectly fixed to the left swing arm, right swing arm or connecting shaft on its drive side.

[0038] Advantageously, the vehicle seat further has a backrest that can be pivotally adjusted towards and away from the seat cushion. Here, in the case of the backrest reclining greatly, by pivotally lifting the rear load-bearing assembly from the rear side, the seat cushion surface and the backrest surface can be made flat, thereby solving the problem of lumbar support caused by the non-flatness of the two when the occupant takes a nap, makes a bed or combines beds. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be explained in more detail below with reference to the accompanying drawings by means of embodiments, but the present invention is not limited to the embodiments described in the drawings and detailed below. The drawings are as follows:

[0040] Figure 1a A schematic perspective view shows the seat cushion of the vehicle seat of the present invention in the assembled state;

[0041] Figure 1b A schematic perspective view shows the seat cushion in FIG. 1, but the front load-bearing assembly is shown separately;

[0042] Figure 1c A schematic perspective view shows Figure 1a the seat cushion in, but the front load-bearing assembly is omitted, and the rear load-bearing assembly together with the fixed bracket and the swing arm assembly is shown separated from the seat frame assembly;

[0043] Figure 2a and Figure 2b respectively show the connection and positional relationship between the rear load-bearing assembly together with the fixed bracket and the swing arm assembly in an assembly drawing and an exploded view;

[0044] Figure 3 A side view shows the left swing arm of the swing arm assembly;

[0045] Figure 4a An exploded view shows the front load-bearing assembly;

[0046] Figure 4b A partial side view shows the connection state of the front link mechanism with the fixed bracket and the swing arm assembly;

[0047] Figure 4c A partial stereoscopic bottom view shows the connection of the first front lifting link and the second front lifting link with the synchronous lifting rod, the left swing arm and the fixed bracket respectively;

[0048] Figure 5a Schematically shows the kinematic diagram of the front load-bearing assembly during the lifting process;

[0049] Figure 5bSchematically shows a kinematic diagram of the rear load-bearing assembly during the lifting process;

[0050] Figures 6a to 6c Schematic diagrams respectively showing the initial positions, front lifting positions, and rear lifting positions of the front load-bearing assembly and the rear load-bearing assembly;

[0051] Figures 7a to 7c Schematic diagrams respectively showing the initial positions, front lifting positions, and rear lifting positions of the front load-bearing assembly and the rear load-bearing assembly, and also showing different states of the swing arm here;

[0052] Figures 8a to 8c Component diagrams respectively showing the initial positions, front lifting positions, and rear lifting positions of the front load-bearing assembly and the rear load-bearing assembly, and showing different states of the corresponding components here;

[0053] Figures 9a to 9c Schematically shows the first variant embodiment of the present invention in an exploded view, an assembled partial view, and a kinematic diagram;

[0054] Figure 10 Schematically shows the second variant embodiment of the present invention in a perspective view;

[0055] Figure 11 Schematically shows the third variant embodiment of the present invention in an exploded view;

[0056] Figure 12 Schematically shows the fourth variant embodiment of the present invention in a perspective view;

[0057] Figure 13a and Figure 13b Schematically shows the fully flattened state of the backrest and the seat cushion of the vehicle seat of the present invention in a large recline situation in a side view and a perspective view respectively; and

[0058] Figure 14 Schematically shows the non-flattened state of the backrest and the seat cushion of the vehicle seat in the prior art in a large recline situation in a perspective view. Detailed implementation manners

[0059] Exemplary embodiments of the present invention will be described below. In this specification, for the sake of explanation only, various systems, structures, and devices are schematically depicted in the drawings, but not all features of the actual systems, structures, and devices are described. For example, well-known functions or structures are not described in detail to avoid obscuring the present invention with unnecessary details. Of course, it should be understood that in any actual application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and industry-related and system-related limitations need to be complied with. These specific goals may vary depending on the actual application. In addition, it should be understood that such specific implementation decisions, although complex and time-consuming, are routine tasks for those of ordinary skill in the art who benefit from the present invention.

[0060] The terms and phrases used herein should be understood and interpreted to have the same meaning as that understood by those skilled in the relevant art for these terms and phrases. The consistent use of terms or phrases herein is not intended to imply a special definition of the terms or phrases, that is, a definition different from the ordinary and customary meaning understood by those skilled in the art. For terms or phrases intended to have a special meaning, that is, a meaning different from that understood by the skilled person, such special definition will be clearly listed in the specification in a defined manner, directly and unambiguously giving the special definition of the term or phrase.

[0061] Unless the context requires otherwise, throughout the following specification, the word "comprising" and its variants, such as "including" and "having", will be interpreted in an open, inclusive sense, that is, as "including but not limited to".

[0062] The vehicle seat 1 of the present invention has a seat cushion 2 and a backrest 3 that can be adjusted towards or away from the seat cushion 2 (see Figure 13a and Figure 13b ). The backrest 3 can be connected to the seat cushion 2 or to a base on a slide rail or other possible vehicle interior components. The vehicle seat 1 can be installed and used in a vehicle. The vehicle of the present invention can be an automobile, such as a sedan or a commercial vehicle, etc. Below, a vehicle x - y - z coordinate system is established according to the commonly used technical means in the field of automotive engineering to facilitate the subsequent description of the relative positions of the various parts in the present invention.

[0063] Next, different embodiments of the seat cushion 2 of the vehicle seat 1 of the present invention will be described exemplarily with reference to the drawings. It should be understood that components not directly related to the inventive design, such as seat covers and foams, are omitted from the figures for better visibility.

[0064] Figure 1aA schematic perspective view shows the seat cushion 2 of the present invention in an assembled state. The seat cushion 2 generally comprises a support assembly 4 (also referred to as a seat pan assembly) for supporting an occupant's upper portion, and a seat frame assembly 5 for supporting the support assembly 4 below. The support assembly 4 includes a front support component 6, positioned forward in the x-direction, primarily for supporting the occupant's thigh region, and a rear support component 7, positioned rearward in the x-direction, primarily for supporting the occupant's buttocks region. Together, the front support component 6 and the rear support component 7 define the seat cushion's seating area.

[0065] Figure 1b Shown in a schematic perspective view Figure The seat cushion 2 is shown with the front load-bearing assembly 6 separated. As will be described in detail below, the front load-bearing assembly 6 is pivotally connected to the rear load-bearing assembly 7 at the rear side. The front load-bearing assembly 6 can be actuated by a swing arm assembly 8 to pivotally elevate and lower relative to the rear load-bearing assembly 7 from the front side to pivotally move between its raised position and an initial position to individually adjust the load comfort in the groin area of the occupant.

[0066] ​ Shown in a schematic perspective view ​ The seat cushion 2 is shown in FIG2 , but the front load-bearing assembly 6 is omitted, and the rear load-bearing assembly 7, together with the fixing bracket 9 and the swing arm assembly 8, is shown separated from the seat frame assembly 5. As will be described in detail below, the rear load-bearing assembly 7 is indirectly pivotally connected to the seat frame assembly 5 via the fixing bracket 9 welded to both the upper side plate 10 and the front crossbar 11 of the seat frame assembly 5, and the rear load-bearing assembly 7 can be actuated by the same swing arm assembly 8 mentioned above to be pivotally raised and lowered relative to the seat frame assembly 5 from the rear side to pivotally move between its raised position and the initial position, so as to individually adjust the load comfort for the occupant's hip area and ensure that the rear load-bearing assembly 7 or the entire seat cushion 2 can be horizontally aligned with the backrest 3 when the backrest 3 is fully reclined (see FIG2 ). ​ and ​ ).

[0067] ​ and ​The rear load-bearing assembly 7 together with the fixed bracket 9 and the swing arm assembly 8 are shown respectively in an assembled view and an exploded view to show their component parts and connection relationships. The rear load-bearing assembly 7 includes a rear bracket mechanism, and the swing arm assembly 8 can drive the rear load-bearing assembly 7 to pivotally lift or sink from the rear side via the rear bracket mechanism. The rear bracket mechanism includes two rear lifting brackets 13 that extend substantially parallel in the x direction, namely a left rear lifting bracket 13 and a right rear lifting bracket 13. The rear load-bearing assembly 7 further includes a rear seat plate 14, and the rear seat plate 14 fixedly connects the two rear lifting brackets 13 to each other at the rear end, for example, by welding. Here, the two rear lifting brackets 13 and the rear seat plate 14 together substantially enclose a load-bearing area for supporting the occupant's hip area, and a load-bearing spring (not shown) can be additionally provided therein to form a planar support area (which can also be referred to as the rear seat area).

[0068] As can be seen from ​ and ​ each rear lifting bracket 13 successively includes a central pivot point 15, a swing arm assembly connection point 16, and a front load-bearing assembly connection point 17 in the x direction from front to back. Each connection point 15, 16, 17 can be configured as a connection hole on the rear lifting bracket 13, for example.

[0069] Each rear lifting bracket 13 is pivotally connected to the fixed bracket 9 via its own central pivot point 15. Specifically, referring to ​ , the pivot pin 18 simultaneously passes through the rear connection hole 19 of the fixed bracket 9 and the central pivot hole 15 of the rear lifting bracket 13, so that the rear lifting bracket 13 can pivot relative to the fixed bracket 9 on the same side by means of the pivot pin 18. Since the fixed bracket 9 is fixedly connected, here welded, to the seat frame assembly 5, the two rear lifting brackets 13 can pivot relative to the seat frame assembly 5 simultaneously, thereby pivotally lifting or sinking the rear load-bearing assembly 7 from the rear side.

[0070] Each rear lifting bracket 13 is connected to the swing arm assembly 8 via its own swing arm assembly connection point 16. Specifically, the guide pin 22 passes through the rear chute 21 of the swing arm 20 and is inserted into and connected to the swing arm assembly connection hole 16 of the rear lifting bracket 13, so that the guide pin 22 can be slidably guided in the rear chute 21 of the swing arm 20 when the swing arm 20 swings. As will be described in detail below, the rear lifting bracket 13 fixedly connected to the guide pin 22 can be driven by the rear chute 21 of the swing arm 20 to perform a pivoting motion. In some embodiments, the rear lifting bracket 13 can be indirectly connected to the rear chute 21 of the swing arm 20 via an additionally provided link mechanism. The link mechanism is hingedly connected to the rear lifting bracket 13 on the one hand and slidably hingedly connected to the rear chute 21 of the swing arm 20 on the other hand, so that the rear lifting bracket 13 can be indirectly driven by the rear chute 21 of the swing arm 20 via the link mechanism. The design form of the link mechanism can refer to, for example, the front link mechanism 39 described below or be adaptively modified.

[0071] Each rear lifting bracket 13 is connected to the rear side of the front load-bearing assembly 6 via its own front load-bearing assembly connection point 17. Specifically, the pivot pin 23 passes through the connection hole 25 on the rear side of the front seat 24 of the front load-bearing assembly 6 (see ​ ) and the front load-bearing component connecting hole 17 of the rear lifting bracket 13.

[0072] Here, the front supporting assembly 6 can be pivoted relative to the rear lifting bracket 13 and thus the entire rear supporting assembly 7 by means of the pivot pin 23, so that the front supporting assembly 6 can be pivotally raised or lowered from the front side. During the pivoting movement of the front supporting assembly 6 between its initial position and the raised position, the rear supporting assembly 7 remains stationary.

[0073] Furthermore, because the front support assembly 6 is connected to the rear lifting bracket 13 of the rear support assembly 7 via the pivot pin 23, when the rear support assembly 7 pivots and rises from the rear side, the front support assembly 6 is also lifted from its rear side. This significantly reduces the angular change between the front and rear support assemblies 6 during the lifting process, compared to the prior art where the front support assembly 6 is pivotally connected to the seat frame assembly 5 and is not lifted together. This significantly reduces deformation of the foam and seat cover covering both, enhancing the aesthetics of the seat cushion surface 49. Therefore, during the alignment of the seat cushion 2 and the backrest 3, the entire seat cushion 2 adjusts in unison, reducing compression of the foam cover of the seat cushion 2 itself and resulting in a more aesthetically pleasing and flatter appearance. In some embodiments, when the rear lifting angle (limit value) β can be smaller without greatly affecting the aesthetics, the front load-bearing component 6 can be hingedly connected to the seat frame assembly 5, for example, the upper side panel 10 thereof, at the rear side, so that the front load-bearing component 6 remains stationary during the pivotal movement of the rear load-bearing component 7 between its initial position and the raised position.

[0074] The swing arm assembly 8 includes two swing arms 20 arranged opposite to each other on the left and right sides, namely the left swing arm 20 and the right swing arm 20, and a connecting shaft 26 extending in the y direction to fix the two to each other at the connecting shaft hole 35, for example, by welding.

[0075] ​ The schematic diagram of the left swing arm 20 is shown as an example. It can be seen here that the swing arm 20 can be constructed in a roughly T-shaped manner, so it can include a lower driving arm 27 and two driven arms 28 in the front and rear in the x direction. ​, the left swing arm 20 can have a central pivot point 29 at its center, at the intersection of its three arms 27, 28, which is configured as a central pivot hole here. The pivot pin 30 can pass through the intermediate connection hole 31 of the fixed bracket 9 and the central pivot hole 29 of the swing arm 20 at the same time, so that the swing arm 20 is pivotally connected to the fixed bracket 9. The drive arm 27 of one of the swing arms 20, here the left swing arm 20, also has a drive assembly connection hole 32 at the lowermost position. The lead screw 34 of the motor of the drive assembly 33 can be pivotally connected to the drive assembly connection hole 32 to drive the drive arm 27 and thus the entire swing arm 20 to swing around the central pivot hole 29. Here, the drive assembly 33 can be fixed to the left fixed bracket 9 with its fixed side. The lead screw 34 can perform both telescopic movement and pivotal movement to realize driving the swing arm 20 to perform a swinging movement. The drive arm 27 has a connection shaft hole 35 above the drive assembly connection hole 32. The connection shaft 26 is fixedly connected at one end thereof, here welded, to the connection shaft holes 35 of the two swing arms 20. Therefore, when the drive assembly 33 pushes or pulls the left swing arm 20 to swing, the driving force is simultaneously transmitted to the right swing arm 20 through the connection shaft 26 and drives the right swing arm 20 to swing synchronously. Therefore, only one drive assembly 33 (with one motor) is provided here to realize the synchronous swing of the two swing arms 20. Therefore, there is no need to provide additional drive assembly connection holes 32 and drive assembly 33 on the right swing arm 20.

[0076] The front follower arm 28 and the rear follower arm 28 respectively have a front chute 36 and a rear chute 21, which extend substantially in the z direction in the designed position or the initial position of the load-carrying assembly 4. The front follower arm 28 and the rear follower arm 28 are respectively arranged on the front and rear sides of the central pivot hole 29 here. An implementation scheme in which both are arranged on the same side of the central pivot hole 29 is also conceivable. Combined ​As shown, the front chute 36 and the rear chute 21 respectively have relief groove sections B1 - B2, A1 - A2 formed as circular arc sections above, and the circular arc sections are part of a complete circle centered at the central pivot point 29. Each chute 36, 21 also respectively has curvilinear drive groove sections B2 - B3, A2 - A3 adjacent to the relief groove sections B1 - B2, A1 - A2 below. The drive groove sections B2 - B3, A2 - A3 have a bending direction or convex - concave direction opposite to that of the adjacent relief groove sections B1 - B2, A1 - A2, or in other words, they have curvature radii with opposite signs. Therefore, each chute 36, 21 has a generally S - shaped trend here. In the initial position of the carrier assembly 4, the drive groove section A2 - A3 of the rear chute 21 extends backward away from the central pivot point 29, while the drive groove section B2 - B3 of the front chute 36 extends forward away from the central pivot point 29. In some embodiments, the bending direction or convex - concave direction of the drive groove sections B2 - B3, A2 - A3 and the adjacent relief groove sections B1 - B2, A1 - A2 can also be the same, or in other words, they have curvature radii with the same sign, as long as they can achieve their respective functions.

[0077] In addition, wear - resistant bushings 37 can be embedded in each of the chutes 36, 21, and the guide pins 38, 22 can thus slide in a wear - resistant manner in the wear - resistant bushings 37 of the front chute 36 and the rear chute 21 respectively.

[0078] ​ The front carrier assembly 6 is shown in an exploded view. ​ The connection of the front carrier assembly 6 with the fixed bracket 9 and the swing arm assembly 8 is shown in a partial side view, with the front toilet bowl 24 omitted here. The front carrier assembly 6 includes a planar front toilet bowl 24, and the front toilet bowl 24 generally forms a bearing area for the crotch area of the occupant's thighs. The front carrier assembly 6 also includes a front link mechanism 39 provided on its front side, and the left and right swing arms 20 can drive the front toilet bowl 24 to pivot up or down via the front link mechanism 39. The front link mechanism 39 includes two front lift links 40, 41 arranged oppositely on the left and right sides, that is, one upper first front lift link 40 and one lower second front lift link 41 on each side, and a synchronous lift rod 42 connecting them to each other. Here, the first front lift link 40 and the second front lift link 41 on each side are angled (i.e., an angle other than 0° or 180°), here arranged at an acute angle and both are welded to the synchronous lift rod 42. Therefore, the angles between the first front lift link 40, the second front lift link 41, and the synchronous lift rod 42 are always immutable, and the entire front link mechanism 39 thus forms a rigid body fixed to each other.

[0079] The front bearing assembly 6 further includes a fixing block 43 provided on each of the left and right sides. The fixing block 43 can be fixed to the front toilet bowl 24 by abutting from below (for example, by means of bolts). Each fixing block 43 has a guide groove 44 extending through in the y direction, and the cross-sectional dimension of the guide groove 44 in the x-z plane is larger than the cross-sectional dimension of the synchronous lifting rod 42 to allow the synchronous lifting rod 42 to slide back and forth within the guide groove 44.

[0080] See ​ , both ends of the synchronous lifting rod 42 pass through the guide grooves 44 of the fixing blocks 43 respectively and can rotate and slide back and forth within the guide grooves 44, so that the front link mechanism 39 forms a sliding hinge (or a slidable hinge) with the front toilet bowl 24 through the guide grooves 44. The other end of the first front lifting link 40 on each side is pivotally connected to the front connection hole 45 of the fixing bracket 9. Specifically, the pivot pin 46 passes through the front connection hole 45 of the fixing bracket 9 and the pivot connection hole 47 of the first front lifting link 40 at the same time, so that the first front lifting link 40 can be pivotally connected to the fixing bracket 9 with the help of the pivot pin 46. The second front lifting link 41 is connected to the front sliding groove 36 of the same-side swing arm 20 at its swing arm assembly connection point 48. Specifically, the guide pin 38 passes through the front sliding groove 36 of the swing arm 20 and is inserted and connected to the swing arm assembly connection point 48 of the second front lifting link 41. Thus, when the swing arm 20 swings, the guide pin 38 can be guided to slide within the front sliding groove 36 of the swing arm 20, and the second front lifting link 41 fixedly connected to the guide pin 22 can therefore be driven by the front sliding groove 36 of the swing arm 20. When the second front lifting link 41 is driven by the front sliding groove 36, the first front lifting link 40 is driven to pivot and at the same time the synchronous lifting rod 42 moves back and forth within the guide groove 44 to lift or lower the front toilet bowl 24. Here, the distance that the synchronous lifting rod 42 moves back and forth within the guide groove 44 also defines the height or angle that the front toilet bowl 24 can be lifted.

[0081] ​ A partial three-dimensional bottom view shows the connections of the first front lifting link 40 and the second front lifting link 41 on the left side of the front bearing assembly 6 to the synchronous lifting rod 42, the left swing arm 20, and the fixing bracket 9 respectively. Here, it can be seen that the first front lifting link 40 and the second front lifting link 41 are fixed to the synchronous lifting rod 42 at intervals in the y direction. The first front lifting link 40 and the fixing bracket 9 are respectively located on the inner side in the y direction of the second front lifting link 41 and the left swing arm 20. It can also be imagined that these components have the same arrangement on the right side of the front bearing assembly 6. However, this arrangement is not a mandatory requirement.

[0082] ​Schematically shows a kinematic diagram of the front load-bearing assembly 6 or its front toilet bowl 24 during the lifting process. Here, the two swing arms 20 are driven counterclockwise by the drive assembly 33 and thus drive the front link mechanism 39 to pivot upward relative to the fixed bracket 9 using the drive slot section B2 - B3 of their front sliding slots 36. Here, the drive track of the drive slot section B2 - B3 of the front sliding slots 36 of the two swing arms 20 corresponds to and is shown here as a cam rotation track. The lifting synchronization rod 42 slides backward in the guide slot 44 of the fixed block 43, while causing the front toilet bowl 24 to pivot upward around the front load-bearing assembly connection point 17 on the rear lifting bracket 13, realizing the pivot lifting of the front load-bearing assembly 6 from the initial position to the front lifting position. It can be envisioned that by driving the two swing arms 20 in the reverse clockwise direction, the pivot sinking of the front load-bearing assembly 6 from the front lifting position to the initial position can be achieved. The front lifting position can be understood here as the highest limit position to which the front load-bearing assembly 6 can be lifted. And multiple intermediate positions can be included between the front lifting position and the initial position. For example, by controlling the stroke of the motor, the front load-bearing assembly 6 can be pivotally rotated and stopped at these intermediate positions steplessly.

[0083] ​ Schematically shows a kinematic diagram of the rear load-bearing assembly 7 during the lifting process. Here, the two swing arms 20 are driven clockwise by the drive assembly 33 and thus drive the rear lifting bracket 13 of the rear bracket mechanism to pivot upward from the rear side using the drive slot section A2 - A3 of their rear sliding slots 21. Here, the drive track of the drive slot section A2 - A3 of the two swing arms 20 still corresponds to and is shown here as a cam rotation track. The two swing arms 20 directly drive the two rear lifting brackets 13 to pivot upward around the central pivot point 15 relative to the fixed bracket 9 at the swing arm assembly connection point 16 of the two rear lifting brackets 13, realizing the pivot lifting of the rear load-bearing assembly 7 from the rear side. It can be envisioned that by driving the two swing arms 20 in the reverse counterclockwise direction, the pivot sinking of the rear load-bearing assembly 7 from the rear lifting position to the initial position can be achieved. The rear lifting position can also be understood here as the highest limit position to which the rear load-bearing assembly 7 can be lifted. And multiple intermediate positions can be included between the rear lifting position and the initial position. For example, by controlling the stroke of the motor, the rear load-bearing assembly 6 can be pivotally rotated and stopped at these intermediate positions steplessly.

[0084] ​ Schematically shows the schematic diagrams of the initial positions, front lifting positions, and rear lifting positions of the front load-bearing assembly 6 and the rear load-bearing assembly 7 respectively. ​ Schematically shows the schematic diagrams of the initial positions, front lifting positions, and rear lifting positions of the front load-bearing assembly 6 and the rear load-bearing assembly 7 respectively. Here, different states of the swing arms 20 are also shown. ​A component diagram schematically showing the initial positions, the front lift positions, and the rear lift positions of the front load-bearing assembly 6 and the rear load-bearing assembly 7 respectively, and showing different states of the corresponding components here.

[0085] As can be seen again from the view shown by ​ , the first front lift link 40 of the front link mechanism 39 is pivotally hinged to the fixed bracket 9 at its rear end, the swing arm 20 is pivotally hinged to the fixed bracket 9 at its central pivot point 29, and the rear lift bracket 13 of the rear bracket mechanism is pivotally hinged to the fixed bracket 9 at its front end. Since the fixed bracket 9 is fixedly connected to the seat frame assembly 5, during each lift process, these hinge points hinged to the fixed bracket 9 always remain in place and become pivot centers.

[0086] Refer to ​ , ​ and ​ the initial position of the load-bearing assembly 4 shown, the front load-bearing assembly 6 and the rear load-bearing assembly 7 extend substantially horizontally to jointly form a substantially horizontal seating area of the seat cushion 2. The front and rear follower arms 28 of the swing arm 20 are substantially horizontally oriented. The guide pin 38 of the second front lift link 41 of the front link mechanism 39 is substantially at the adjacent or transitional position between the avoidance groove section B1 - B2 and the drive groove section B2 - B3 of the front chute 36 of the swing arm 20, and the guide pin 22 of the rear lift bracket 13 of the rear bracket mechanism is substantially at the adjacent or transitional position between the avoidance groove section A1 - A2 and the drive groove section A2 - A3 of the rear chute 21 of the swing arm 20.

[0087] Refer to ​ , ​ and ​ the front lift position of the front load-bearing assembly 6 of the load-bearing assembly 4 shown. Compared with the initial position, the front load-bearing assembly 6 or the front seat basin 24 is pivotally lifted upward by an angle α (for example, about 6 degrees), and the rear load-bearing assembly 7 remains in place. At this time, the drive assembly 33 has driven the swing arm 20 to rotate counterclockwise by an angle. The guide pin 38 of the second front lift link 41 of the front link mechanism 39 has completed the drive groove section B2 - B3 of the front chute 36 of the swing arm 20 and is at its lower stop point, and the guide pin 22 of the rear lift bracket 13 of the rear bracket mechanism has completed the avoidance groove section A1 - A2 of the rear chute 21 of the swing arm 20 and is at its upper stop point. During the process of the swing arm 20 driving the front link mechanism 39 to pivot counterclockwise, the front link mechanism 39 simultaneously drives the front seat basin 24 to pivot and lift. During this process, the guide pin 22 of the rear lift bracket 13 of the rear bracket mechanism slides in the avoidance groove section A1 - A2 of the rear chute 21 in an avoidance manner but is not driven by it.

[0088] Refer to ​ , ​ and​ The rear-lifting position of the rear bearing assembly 7 of the bearing assembly 4 shown, compared to the initial position, the rear bearing assembly 7 or rather its rear-lifting bracket 13 is pivotally lifted upward by an angle β (which can also be called the seat cushion leveling angle, for example, about 20 degrees, at this time the seat cushion 2 is level with the backrest 3). At the same time, since the rear side of the front bearing assembly 6 is connected to the rear-lifting bracket 13 via the front bearing assembly connection point 17, the front bearing assembly 6 is also driven to lift upward from the rear side, thereby keeping the angle between the front bearing assembly 6 and the rear bearing assembly 7 as little changed as possible during the lifting process, so as to reduce the negative impact of the change in this angle on the aesthetics of the seat cushion surface 49. In the rear-lifting position, the drive assembly 33 has driven the swing arm 20 to rotate clockwise backward by an angle, the guide pin 38 of the second front-lifting link 41 of the front link mechanism 39 has completed the avoidance groove section B1 - B2 of the front chute 36 of the swing arm 20 and has reached its upper stop point, and the guide pin 22 of the rear-lifting bracket 13 of the rear bracket mechanism has completed the drive groove section A2 - A3 of the rear chute 21 of the swing arm 20 and has reached its lower stop point. During the process of the swing arm 20 driving the rear-lifting bracket 13 to pivot clockwise, the rear bearing assembly 7 is pivotally lifted to the rear-lifting position. During this process, the guide pin 38 of the second front-lifting link 41 of the front link mechanism 39 slides in the avoidance groove section B1 - B2 of the front chute 36 in an avoidance form, but is not driven by it.

[0089] See ​ and ​ , in the case of the large recline of the backrest 3, by pivotally lifting the rear bearing assembly 7 of the bearing assembly 4 from the rear side, the seat cushion surface 49 and the backrest surface 50 can be made substantially level, thus solving the problem of the lumbar support caused by the non-leveling of the two when the occupant takes a nap, makes a bed, or combines beds.

[0090] ​ Schematically shows the first variant embodiment. Here, for the front bearing assembly 6, instead of the sliding hinge connection between the front seat basin 24 and the front link mechanism 39 in the front side by means of the guide groove 44 of the fixing block 43 in the previous embodiment, in this first variant embodiment, the hinge connection between the front seat basin 24 and the rear-lifting bracket 13 at the front bearing assembly connection point 17 at the rear side is set as a sliding hinge connection. For this purpose, see ​ and ​ , a guide groove 51 can be provided on the rear side of the front seat basin 24, and the bolt 52 can be fixed to the front bearing assembly connection point 17 of the rear-lifting bracket 13 after passing through the anti-wear bushing 53. The anti-wear bushing 53 can be inserted into the guide groove 51 for guidance. See ​In the kinematic diagram shown, when the front seat pan 24 is lifted by the swing arm 20 and the front link mechanism 39, the front seat pan 24 pivots upward about the bolt 52 and slides backward while being guided by the bolt 52. It is also conceivable here that the guide groove 51 is not provided on the front seat pan 24, but at the front bearing assembly connection point 17 of the rear lift bracket 13, as long as a sliding hinge of the front seat pan 24 at the front bearing assembly connection point 17 can be achieved.

[0091] In this first variant embodiment, correspondingly, the front link mechanism 39 in the previous embodiment can remain unchanged, and the cross-section of the guide groove 44 of the fixed block 43 can be designed to be shape-matching with the cross-section of the front synchronous lift rod 42, such that the front synchronous lift rod 42 can only rotate within the guide groove 44 and cannot slide back and forth. It is also conceivable that the fixed block 43 and the cooperating front synchronous lift rod 42 in the previous embodiment can be omitted, and instead, the first front lift link 40 and the second front lift link 41 of the front link mechanism 39 are directly hinged to the front seat pan 24. It is even more conceivable that, in addition to omitting the fixed block 43 and the front synchronous lift rod 42, the first front lift link 40 and the second front lift link 41 of the front link mechanism 39 are also omitted, and instead, a guide pin is directly provided on the front seat pan 24, which is directly slidably hinged in the front chute 36 of the swing arm 20 and is driven by it, so that the front seat pan 24 can be directly driven by the front chute 36 of the swing arm 20.

[0092] ​ The second variant embodiment is schematically shown. Here, for the drive assembly 33, instead of the drive assembly 33 being fixed to the fixed bracket 9 with its fixed side in the previous embodiment and the fixed bracket 9 being fixed to the upper side plate 10 of the seat frame assembly 5 (shown in the left figure), in this second variant embodiment, the drive assembly 33 is fixed to the seat frame lower vertical plate 55 or the seat frame lower bracket connected to the upper slide rail of the seat frame assembly 5 with its fixed side (shown in the right figure). Here, the motor model of the drive assembly 33 can also be changed correspondingly, for example, a zero-voltage motor is used instead.

[0093] ​Schematically shows a third variant embodiment. Here, for the wear-resistant bushings 37 in the sliding grooves 21, 36 of the swing arm 20, instead of fixedly embedding the wear-resistant bushings 37 in the entire sliding grooves 21, 36 of the swing arm 20 in the previous embodiments, in this third variant embodiment, such wear-resistant bushings 37 are omitted, and the guide pins 22 are replaced with a bolt-bushing combination. Here, the bolt 56 may include a smooth rod portion near the bolt head and a threaded portion away from the bolt head. The bushing 57 (made of plastic, for example) can be sleeved on the smooth rod portion of the bolt 56 on the one hand, and inserted into the sliding grooves 21, 36 and slidably guided by them on the other hand. And the threaded portion of the bolt 56 can be connected to the rear lifting bracket 13 or the second front lifting link 41. This can save the material of the wear-resistant bushing 37.

[0094] ​ Schematically shows a fourth variant embodiment. Here, for the drive assembly 33, instead of the drive assembly 33 being hinged to the drive arm 27 of the swing arm 20 at its drive side in the previous embodiments (shown in the left figure), in this fourth variant embodiment, the drive assembly 33 is hinged to the connecting shaft 26 at its drive side by means of a motor bracket 58 (shown in the right figure), and the connecting shaft 26 connects the two swing arms 20 as described above. Here, by driving the connecting shaft 26 to move by the drive assembly 33, synchronous driving of the two swing arms 20 can be achieved.

[0095] In addition, in some embodiments, one of the left swing arm 20 and the right swing arm 20 may only have one of the front sliding groove 36 and the rear sliding groove 21, and the other of the left swing arm 20 and the right swing arm 20 may only have the other of the front sliding groove 36 and the rear sliding groove 21. That is to say, the left swing arm 20 and the right swing arm 20 are respectively only responsible for driving the lifting of one of the front load-bearing assembly 6 and the rear load-bearing assembly 7. Since the left swing arm 20 and the right swing arm 20 respectively only have one sliding groove 21 or 36, they can respectively only have the front driven arm 28 or the rear driven arm 28, that is, they respectively have a substantially L-shaped shape. In some embodiments, one of the left swing arm 20 and the right swing arm 20 has both the front sliding groove 36 and the rear sliding groove 21, and the other of the left swing arm 20 and the right swing arm 20 has neither the front sliding groove 36 nor the rear sliding groove 21. In some embodiments, one of the left swing arm 20 and the right swing arm 20 has the front sliding groove 36 and the rear sliding groove 21, and the other of the left swing arm 20 and the right swing arm 20 has the front sliding groove 36 or the rear sliding groove 21.

[0096] In the present invention, only one driving component 33 with one motor can be used to lift the front bearing component 6 and the rear bearing component 7, and to level the rear bearing component 7 and thus the seat cushion 2 and the backrest 3. Therefore, to achieve the same function, fewer parts are required, less space of the seat is occupied, the structural space is compact, and it can be adapted to other functions such as high-profile and zero-pressure. With this one driving component 33, the rear leveling function can be achieved at any position of the backrest 2 and the angle of rear lift can be adjusted arbitrarily, meeting the comfort requirements of passengers with different body types.

[0097] Finally, it should be pointed out that the above-mentioned various embodiments are only used to understand and explain the present invention, and do not constitute a limitation on the protection scope of the present invention. For those skilled in the art, modifications or re-combinations can be made on the basis of the above embodiments, and they all do not depart from the protection scope of the present invention.

Claims

1. A vehicle seat with a seat cushion lifting function, characterized in that, The vehicle seat has a seat cushion, and the seat cushion has a load-bearing assembly for supporting an occupant and a seat frame assembly for supporting the load-bearing assembly. The load-bearing assembly includes: a front load-bearing component, which can pivot relative to the seat frame assembly between its initial position and a raised position; a rear load-bearing component, which can pivot relative to the seat frame assembly between its initial position and a raised position; a swing arm assembly having a left swing arm and a right swing arm arranged oppositely, the left swing arm and the right swing arm are respectively directly or indirectly hinged to the seat frame assembly, and the front load-bearing component and the rear load-bearing component are respectively drivingly connected to at least one of the left swing arm and the right swing arm; and a drive component, which can drive the at least one swing arm to swing, and through the swinging movement of the at least one swing arm, can drive the front load-bearing component and the rear load-bearing component to pivot between their initial positions and raised positions.

2. The vehicle seat according to claim 1, characterized in that, The at least one swing arm can swing in two opposite swinging directions so as to respectively drive the front load-bearing component and the rear load-bearing component to pivot from their initial positions to the raised positions.

3. The vehicle seat according to claim 1, characterized in that, The front load-bearing component includes a front link mechanism, the front link mechanism is drivingly connected to the at least one swing arm, through the swinging movement of the at least one swing arm, the front link mechanism can be driven to pivot, and through the pivoting movement of the front link mechanism, the front load-bearing component can be driven to pivot between its initial position and a raised position; and / or The rear load-bearing component includes a rear bracket mechanism, the rear bracket mechanism is drivingly connected to the at least one swing arm, through the swinging movement of the at least one swing arm, the rear bracket mechanism can be driven to pivot, and through the pivoting movement of the rear bracket mechanism, the rear load-bearing component can be driven to pivot between its initial position and a raised position.

4. The vehicle seat according to claim 3, characterized in that, The at least one swing arm has at least one front sliding groove and at least one rear sliding groove in total, the front sliding groove has a curved driving groove section, and the rear sliding groove has a curved driving groove section, wherein, the front link mechanism can be slidably hinged in the driving groove section of the front sliding groove, and through the sliding of the front link mechanism in the driving groove section of the front sliding groove, the front load-bearing component can be driven to pivot between its initial position and a raised position, and / or the rear bracket mechanism can be slidably hinged in the driving groove section of the rear sliding groove, and through the sliding of the rear bracket mechanism in the driving groove section of the rear sliding groove, the rear load-bearing component can be driven to pivot between its initial position and a raised position.

5. The vehicle seat according to claim 4, characterized in that, The front sliding groove has an arc-shaped avoidance groove section adjacent to its driving groove section. The front link mechanism can be slidably hinged in the avoidance groove section of the front sliding groove, and / or the rear sliding groove has an arc-shaped avoidance groove section adjacent to its driving groove section. The rear bracket mechanism can be slidably hinged in the avoidance groove section of the rear sliding groove. Wherein, during the sliding of the front link mechanism in the driving groove section of the front sliding groove, the rear bracket mechanism slides in the avoidance groove section of the rear sliding groove, and / or during the sliding of the rear bracket mechanism in the driving groove section of the rear sliding groove, the front link mechanism slides in the avoidance groove section of the front sliding groove.

6. The vehicle seat according to claim 5, characterized in that, The driving groove section and the avoidance groove section of the front sliding groove have opposite bending directions, and / or the driving groove section and the avoidance groove section of the rear sliding groove have opposite bending directions.

7. The vehicle seat according to claim 4, characterized in that The left swing arm has a front sliding groove and a rear sliding groove, and the right swing arm has a front sliding groove and a rear sliding groove; or, One of the left swing arm and the right swing arm has a front sliding groove, and the other of the left swing arm and the right swing arm has a rear sliding groove; or, One of the left swing arm and the right swing arm has a front sliding groove and a rear sliding groove, and the other of the left swing arm and the right swing arm does not have a front sliding groove and a rear sliding groove; or, One of the left swing arm and the right swing arm has a front sliding groove and a rear sliding groove, and the other of the left swing arm and the right swing arm has a front sliding groove or a rear sliding groove.

8. The vehicle seat according to claim 1, characterized in that The front bearing assembly is hingedly connected to the rear bearing assembly at the rear side, so that during the pivotal movement of the rear bearing assembly between its initial position and the lifted position, the rear bearing assembly can drive the front bearing assembly to move together from the rear side, or The front bearing assembly is hingedly connected to the seat frame assembly at the rear side, so that during the pivotal movement of the rear bearing assembly between its initial position and the lifted position, the front bearing assembly remains stationary, and / or, During the pivotal movement of the front bearing assembly between its initial position and the lifted position, the rear bearing assembly remains stationary.

9. The vehicle seat according to claim 3, characterized in that, The rear bracket mechanism has two opposed rear lifting brackets. The front bearing assembly further includes a front seat pan. The front seat pan is respectively hingedly connected to the first hinge connection points of the two rear lifting brackets at the rear side, and the two rear lifting brackets are directly or indirectly hingedly connected to the seat frame assembly at their second hinge connection points in front of the first hinge connection points.

10. The vehicle seat according to claim 9, characterized in that, At least one of the two rear lifting brackets is drivingly connected to the at least one swing arm at its third hinge connection point behind the second hinge connection point.

Images