Vehicle seat with cushion adjustment system

Abstract

The invention relates to a vehicle seat with a seat cushion adjustment system, characterized in that the vehicle seat has a seat cushion with a seat basin for supporting an occupant and a seat frame for supporting the seat basin and a backrest which can be folded towards the seat cushion, and the seat cushion adjustment system has a seat basin adjustment assembly, the seat basin can be switched between an initial position in which the seat basin can be seated by an occupant and an advanced position in which the seat basin is advanced by a distance in the x direction than in the initial position by means of a seat basin adjustment assembly, the seat basin adjusting assembly is provided with a seat basin connecting rod mechanism and a seat basin driver capable of driving the seat basin connecting rod mechanism to swing, the seat basin connecting rod mechanism is provided with a plurality of seat basin connecting rods, the seat basin is movably supported on the seat frame through the seat basin connecting rods, and each seat basin connecting rod is pivotally connected to the seat basin and is pivotally connected to the seat frame; and the seat basin is switched between the initial position and the forward moving position through the swinging movement of the seat basin connecting rods.

Description

Technical Field

[0001] The invention relates to a vehicle seat with a cushion adjustment system. Background Art

[0002] There is a demand for seats in vehicles that can adjust the seat cushion height to enhance riding comfort. For some vehicle seats, such as passenger seats in sedans, there is also a demand for seat backs that can be folded forward to free up more legroom for rear passengers. For the latter demand, after the backrest is pivoted toward the seat cushion and folded to a certain angle, the upper surface contour of the seat cushion will contact the front surface contour of the backrest earlier and hinder the further folding of the backrest, which results in the backrest still having a relatively high height after folding. Summary of the invention

[0003] The object of the present invention is to provide a vehicle seat with a seat cushion adjustment system, which can solve at least one of the above-mentioned problems.

[0004] In order to achieve the above-mentioned object, the present invention proposes a vehicle seat with a seat cushion adjustment system, characterized in that the vehicle seat has a seat cushion and a backrest that can be folded toward the seat cushion, the seat cushion has a seat pot for supporting an occupant and a seat frame for supporting the seat pot, the seat cushion adjustment system has a seat pot adjustment component, the seat pot can be converted between an initial position and a forward position by means of the seat pot adjustment component, wherein the seat pot can be seated by an occupant in its initial position, and the seat pot in its forward position is moved forward a distance in the x direction than in its initial position, so that the backrest is in front of the seat pot. The seat pan can be folded toward the seat cushion to a greater extent in the forward position than in the initial position of the seat pan without being hindered by the seat cushion, wherein the seat pan adjustment assembly has a seat pan linkage mechanism and a seat pan drive that can drive the seat pan linkage mechanism to swing, the seat pan linkage mechanism having a plurality of seat pan links, the seat pan being movably supported on the seat frame via the seat pan links, each seat pan link being pivotally connected to the seat pan on the one hand and pivotally connected to the seat frame on the other hand, so that the seat pan is converted between the initial position and the forward position by the swinging movement of the seat pan links.

[0005] When folding the backrest toward the seat cushion, the seat pan can be first transferred to its forward position by the seat pan adjustment assembly, so that the backrest contacts the seat cushion or the seat pan later in the folding process, so that the backrest can be folded forward to a greater extent to obtain more space to avoid in the z direction. The support of the seat pan on the seat frame (only) by the seat pan connecting rod further simplifies the structure of the seat pan adjustment assembly.

[0006] Advantageously, the bidet driver is configured as a push rod motor, a push rod of which is pivotally connected to one of the bidet links, so that the push rod can drive the one bidet link to swing during linear motion;

[0007] Alternatively, the bidet driver is configured as a toothed plate-motor mechanism, which includes a toothed plate formed by one of the bidet links and a motor with a gear, and the motor drives the gear and then drives the meshed teeth on the bidet link to drive the bidet link to swing.

[0008] Alternatively, the bidet drive is constructed as a recliner-motor mechanism, which includes an adjuster with a rotating disk and a fixed disk and a motor capable of driving the rotating disk to rotate, wherein the fixed disk of the recliner is connected to the bidet, and the rotating disk is connected to one of the bidet links, and the motor drives the rotating disk to rotate relative to the fixed disk, thereby driving the bidet link to swing.

[0009] Advantageously, the bidet links swing past their vertical position during transition of the bidet between the initial position and the forward position.

[0010] Advantageously, the angle between the seat pan link and the horizontal plane in the forward position of the seat pan is smaller than the angle between the seat pan and the horizontal plane in the initial position of the seat pan, so that the seat pan is closer to the vehicle floor in the forward position than in the initial position.

[0011] The seat pan linkage is advantageously designed such that the seat pan is inclined upwards to a greater extent in the forward position than in the initial position, viewed from the rear to the front.

[0012] Advantageously, at least four bidet connecting rods are provided, and at least two bidet connecting rods are arranged one behind the other on the same side of the bidet.

[0013] Advantageously, the seat support rod is pivotably connected on the one hand to the seat, for example to its seat support tube, and on the other hand to two opposite walls of the seat frame.

[0014] Advantageously, the seat cushion adjustment system further comprises a seat frame adjustment component, by means of which the seat frame or the entire seat cushion can be adjusted in height from a vehicle floor.

[0015] Advantageously, the seat frame adjustment assembly comprises a seat frame linkage mechanism and a seat frame drive capable of driving the seat frame linkage mechanism to swing, the seat frame linkage mechanism comprising a plurality of seat frame links, the seat frame being movably supported on the upper slide rail via the seat frame links, each seat frame link being pivotally connected to the seat frame on the one hand and to the upper slide rail of the vehicle seat on the other hand, so that the seat frame can adjust its height from the vehicle floor through the swinging movement of each seat frame link.

[0016] Advantageously, the seat frame driver is configured as a push rod motor, a push rod of the push rod motor being pivotally connected to one of the seat frame links, so that the push rod can drive the one seat frame link to swing when it moves linearly;

[0017] Alternatively, the seat frame driver is configured as a toothed plate-motor mechanism, which includes a toothed plate formed by one of the seat frame links and a motor with a gear, and the motor drives the gear and then drives the meshed teeth on the one seat frame link to drive the one seat frame link to swing.

[0018] Alternatively, the seat frame drive is constructed as a recliner-motor mechanism, which includes an adjuster with a rotating disk and a fixed disk and a motor capable of driving the rotating disk to rotate, wherein the fixed disk of the recliner is connected to the seat frame, and the rotating disk is connected to one of the seat frame connecting rods. By driving the rotating disk to rotate relative to the fixed disk by the motor, the one seat frame connecting rod can be driven to swing.

[0019] Advantageously, during adjustment of the seat frame height, the seat frame links do not swing past their vertical position.

[0020] Advantageously, at least four seat frame connecting rods are provided, and at least two seat frame connecting rods are arranged one behind the other on the same side of the seat frame.

[0021] Advantageously, a front seat frame link among the seat frame links is pivotally connected to two opposite walls of the seat frame on the one hand and to the upper slide rail on the other hand, while a rear seat frame link among the seat frame links is pivotally connected to a rear transverse tube connecting the walls of the seat frame on the one hand and to the upper slide rail on the other hand.

[0022] Advantageously, the backrest of the vehicle seat is pivotably connected to the seat frame.

[0023] Advantageously, the vehicle seat is designed as a passenger seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be explained in more detail below with the aid of embodiments with reference to the accompanying drawings, but the present invention is not limited to the embodiments described in the drawings and described in detail below. The accompanying drawings are as follows:

[0025] Figure 1 A perspective view schematically showing a seat cushion adjustment system for a vehicle seat according to an embodiment of the present invention;

[0026] Figure 2 Schematically shown Figure 1 An exploded view of the seat pan adjustment assembly of the seat cushion adjustment system;

[0027] Figure 3 A schematic cross-sectional view is used to show the position of the seat pan adjustment assembly when the seat pan is in the initial position;

[0028] Figure 4 The schematic diagram shows Figure 3 The position of the corresponding bidet adjustment assembly;

[0029] Figure 4a Shown in schematic diagram Figure 4 A first variant embodiment of the arrangement of the bidet motor in the form of a push rod motor is shown;

[0030] Figure 4b Shown in schematic diagram Figure 4 A second variant embodiment of the arrangement of the bidet motor is shown;

[0031] Figure 4c Shown in schematic diagram Figure 4 A third variant embodiment of the arrangement of the bidet motor is shown;

[0032] Figure 4d Shown in schematic diagram Figure 4 A fourth variant embodiment of the arrangement of the bidet motor is shown;

[0033] Figure 4e An embodiment in which the bidet drive is configured as a toothed plate-motor mechanism is shown in a schematic diagram;

[0034] Figure 5 A schematic cross-sectional view is used to show the position of the seat pan adjustment assembly when the seat pan is in the forward position;

[0035] Figure 6 The schematic diagram shows Figure 5 The position of the corresponding bidet adjustment assembly;

[0036] Figure 6a Shown in schematic diagram Figure 6 A first variant embodiment of the arrangement of the bidet motor in the form of a push rod motor is shown;

[0037] Figure 6b Shown in schematic diagram Figure 6 A second variant embodiment of the arrangement of the bidet motor is shown;

[0038] Figure 6c Shown in schematic diagram Figure 6 A third variant embodiment of the arrangement of the bidet motor is shown;

[0039] Figure 6d Shown in schematic diagram Figure 6 A fourth variant embodiment of the arrangement of the bidet motor is shown;

[0040] Figure 6e An embodiment in which the bidet drive is configured as a toothed plate-motor mechanism is shown in a schematic diagram;

[0041] Figure 7 Schematically shown Figure 1 An exploded view of a seat frame adjustment assembly of a seat cushion adjustment system;

[0042] Figure 8 A schematic cross-sectional view is provided showing the position of the seat frame adjustment assembly when the seat frame is in a lowered position;

[0043] Fig. 9 The schematic diagram shows Figure 8 The position of the corresponding seat frame adjustment assembly;

[0044] Fig.10 A schematic cross-sectional view is used to show the position of the seat frame adjustment assembly when the seat frame is in the height adjustment position;

[0045] Fig.11 The schematic diagram shows Fig.10 The position of the corresponding seat frame adjustment assembly;

[0046] Fig.12 An exemplary method of adjusting a vehicle seat combination is shown;

[0047] Fig.13 Schematic comparison showing the height difference of the seat basin in the initial position and the forward position;

[0048] Fig.14 Schematic comparison showing the height difference of the seat cushion in the raised position and the lowered position;

[0049] Fig.15a Schematically showing a toothed plate-motor mechanism for achieving seat cushion height adjustment, wherein the seat frame is in a lowered position;

[0050] Fig.15b Schematically shown Fig.15a The toothed plate-motor mechanism in the vehicle, wherein the seat frame is in the raised position. DETAILED DESCRIPTION

[0051] Illustrative embodiments of the present invention are described below. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but all features of the actual systems, structures and devices are not described, such as well-known functions or structures are not described in detail, so as to avoid unnecessary details that make the present invention unclear. Of course, it should be understood that in any practical application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related restrictions need to be followed, and these specific goals may vary from practical application to practical application. In addition, it should be understood that such specific implementation decisions are complex and time-consuming, but this is a routine task for those of ordinary skill in the art who benefit from the present invention.

[0052] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of such terms and phrases by those skilled in the relevant art. Consistent usage of a term or phrase herein is not intended to imply a special definition of the term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly listed in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0053] Unless required by the context, throughout the following specification, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open, inclusive sense, that is, such as "including but not limited to".

[0054] Figure 1 The embodiment of the seat cushion adjustment system 1 for a vehicle seat, such as a passenger seat, of the present invention is schematically shown as a whole. The vehicle may be a car, such as a sedan or a commercial vehicle. Next, a vehicle xyz coordinate system is established according to conventional technical means in the field of automotive engineering, and the vehicle seat installation state and the passenger seat state are referred to, so as to facilitate the subsequent description of the relative positions of the various parts in the present invention.

[0055] The vehicle seat has a backrest 2 and a seat cushion 3. The backrest 2 needs to be folded toward the seat cushion 3, and the seat cushion 3 needs to be adjusted up and down (see Fig.12). The seat cushion 3 has a seat pan 4 for carrying an occupant and a seat frame 5 for carrying the seat pan 4. The seat pan 4 and the seat frame 5 of the seat cushion 3 are designed separately from each other and the seat pan 4 can be supported on the seat frame 5 by a seat pan support tube 6, and the seat pan support tube 6 can be regarded as a part of the seat pan 4. The seat pan support tube 6 can be configured as a seat pan frame, for example, the seat pan 4 can be formed after the seat pan support tube 6 is covered with foam and skin. Compared with the use of a planar seat pan frame, the tubular seat pan support tube 6 as a seat pan frame can meet the lightweight requirements under the same strength requirements. The seat pan support tube 6 can include two front and rear approximately U-shaped seat pan support tube parts 7, 8, which are fixedly connected to each other, for example, welded together to form a closed approximately rectangular seat pan support tube 6. The seat frame 5 of the seat cushion 3 includes two opposite left and right wall panels 9 and two opposite front and rear transverse tubes 10, 11, which are fixedly connected to each other to form a closed approximately rectangular structure of the seat frame 5. Specifically, the rear cross tube 11 can be inserted into the two wall panels 9 and welded thereto. The front cross tube 10 can be inserted into the right wall panel 9 and welded thereto at the right end, and fixedly connected to the left wall panel 9 at the left end by means of the front cross tube bracket 15. The front cross tube bracket 15 is provided to make way for other parts to prevent interference, but according to the arrangement structure, the front cross tube 10 can also be directly fixedly connected to the left wall panel 9 at the left end. The seat frame 5 can be supported on the upper slide rail 12 (see Fig.10 ).

[0056] The seat adjustment system 1 may include a seat basin adjustment assembly 100 and a seat frame adjustment assembly 200. The seat basin adjustment assembly 100 may be used to adjust the relative position of the seat basin 4 relative to the seat frame 5. The seat frame adjustment assembly 200 may be used to adjust the relative position of the seat frame 5 and thus the entire seat cushion 3 relative to the upper slide rail 12.

[0057] Combine the following Figure 1 and Figure 2 The composition of the seat bowl adjustment assembly 100 of the seat cushion adjustment system 1 is introduced in detail. The seat bowl adjustment assembly 100 may include a seat bowl connecting rod mechanism that movably supports the seat bowl support tube 6 on the two wall panels 9, and a seat bowl drive that drives the seat bowl connecting rod mechanism and thus the seat bowl support tube 6 to move, for example, with a motor providing a driving force or torque.

[0058] The bidet drive can be configured as a bidet motor 101 in the form of a known push rod motor. The push rod motor or bidet motor 101 has a motor assembly 102 and a push rod 103, and the motor assembly 102 can convert the rotational motion of the motor shaft into the linear reciprocating motion of the push rod 103. The motor assembly 102 of the bidet motor 101 is pivotally connected to a bidet motor bracket 104, and the bidet motor bracket 104 is fixed to, for example, welded to, the front cross tube 10. In addition to the push rod motor, the bidet drive can also be configured as other forms of motor drive mechanisms, such as a motor providing a driving force or torque that can drive the swinging motion of the bidet linkage mechanism, such as the toothed plate-motor mechanism and the recliner-motor mechanism mentioned below as examples.

[0059] The seat pot link mechanism has two front seat pot links 106 arranged oppositely and in parallel on the left and right sides of the front seat pot support tube portion 7, and two rear seat pot links 107, 108 arranged oppositely and in parallel on the left and right sides of the rear seat pot support tube portion 8. Each front seat pot link 106 is pivotally connected to the front seat pot support tube portion 7 at a support tube hinge point 109, for example, via bolts, and is pivotally connected to the wall plate 9 on the same side at a wall plate hinge point 110, for example, also via bolts. Each rear seat pot link 107, 108 is pivotally connected to the rear seat pot support tube portion 8 at a support tube hinge point 109, for example, via bolts, and is pivotally connected to the wall plate 9 on the same side at a wall plate hinge point 110, for example, also via bolts. Therefore, the four seat pot links 106, 107, 108 together support the seat pot support tube 6 on the two wall plates 9.

[0060] In addition, one of the rear seat basin links 108, here the left rear seat basin link 108, also has a push rod hinge point 111, and the push rod hinge point 111 and the support tube hinge point 109 are arranged on both sides of the wall hinge point 110. The left rear seat basin link 108 is pivotally connected to the free end of the push rod 103 of the seat basin motor 101 at the push rod hinge point 111, for example, via bolts. Therefore, the push rod 103 of the seat basin motor 101 can drive the left rear seat basin link 108 to pivot around the wall hinge point 110 during linear movement, and the left rear seat basin link 108 then drives the seat basin support tube 6 to move forward and backward in the x direction and up and down in the z direction at the same time. The other three seat basin links 106, 107 move in a driven manner.

[0061] Figure 3 and Figure 4The positions or states of the main components of the seat pan adjustment assembly 100 when the seat pan 4 is in the initial position, i.e., the normal seating position, are shown in a schematic diagram and a principle diagram, respectively. It can be seen here that the front and rear seat pan links 106, 108 on the left side extend obliquely from the upper rear to the lower front in the x direction. The front and rear seat pan links 106, 108 on the left side are pivotally connected to the left wall panel 9 at the wall panel hinge point 110 on the one hand, and pivotally connected to the seat pan support tube 6 at the support tube hinge point 109 above the wall panel hinge point 110 on the other hand. Although the front and rear seat pan links 106, 107 on the right side are not visible here, it can be imagined that they are arranged symmetrically and parallel to the front and rear seat pan links 106, 108 on the left side. The motor assembly 102 of the bidet motor 101 is pivotally fixed to the front cross tube 10 via the bidet motor bracket 104, and the free end of the push rod 103 of the bidet motor 101 is pivotally connected to the left rear bidet connecting rod 108 at the push rod hinge point 111 below the wall panel hinge point 110. The push rod 103 of the bidet motor 101 is in a retracted state.

[0062] from Figure 3 and Figure 4 Based on the state of the seat pan 4 or the seat pan adjustment assembly 100 shown, the seat pan motor 101 can drive the left rear seat pan connecting rod 108 to rotate clockwise and thus drive the seat pan support tube 6 and thus the entire seat pan 4 to move forward along x to Figure 5 and Figure 6 Forward position shown.

[0063] Figure 5 and Figure 6 The positions or states of the main components of the seat pan adjustment assembly 100 when the seat pan 4 is in the forward position are shown in a schematic diagram and a principle diagram, respectively. It can be seen here that the push rod 103 of the seat pan motor 101 is in an extended state. All seat pan links 106, 107, 108 have been pivoted clockwise past their vertical positions until they extend obliquely from the rear lower side to the front upper side in the x direction. This causes the seat pan support tube 6 and thus the seat pan 4 to move forward a certain distance in the x direction, which makes room for the backrest 2 to fold in the z direction, so that the backrest 2 can be folded toward the seat cushion 3 to a greater extent.

[0064] also, Figure 5 and Figure 6 The acute angle between the rear seat pan links 107, 108 and the horizontal plane in the illustrated state is Figure 3 and Figure 4 In the state shown, the acute angle between the rear seat basin connecting rods 107, 108 and the horizontal plane is reduced, and Figure 5 and Figure 6 The acute angle between the front seat basin link 106 and the horizontal plane in the state shown is compared with Figure 3 and Figure 4The acute angle between the front seat pan link 106 and the horizontal plane in the illustrated state is reduced to a smaller extent, which causes the seat pan support tube 6 and thus the seat pan 4 to not only be lowered as a whole, but also to change the angle between itself and the horizontal plane in the forward position, that is, the front of itself becomes higher and the rear becomes lower. This facilitates further avoiding space in the z direction for the backrest 2, so that the backrest 2 can be further folded toward the seat cushion 3.

[0065] Therefore, in the forward position of the seat pan 4, the seat cushion 3 leaves space in the z direction for the backrest 2, so that the backrest 2 can be folded to a greater extent toward the seat cushion 3, so that the backrest 2 can be oriented more horizontally in the x direction. More space is freed up in the z direction, for example, to improve the comfort of the legs of the rear passengers placed on the backrest 2.

[0066] It is also conceivable that when the seat pan 4 needs to be restored, that is, when the seat pan 4 is transferred from the forward position to the initial position, it is only necessary to rotate the seat pan motor 101 in the reverse direction to drive the left rear seat pan connecting rod 108 to rotate counterclockwise and thus drive the seat pan support tube 6 and thus the seat pan 4 to move backward along the x direction to Figure 3 and Figure 4 Initial position shown.

[0067] Figure 4a and Figure 6a Shows Figures 3 to 6 A schematic diagram of a first variant embodiment of the arrangement of the bidet motor 101 is shown. Figure 4a and Figure 6a The positions or states of the main components of the seat support tube 6 or the seat pan 4 when they are in the initial position and in the forward position are shown in principle diagrams. Figures 3 to 6 In the arrangement of the seat pan motor 101 shown in the first variant embodiment, the seat pan motor 101 is hinged to the rear pipe 11 at one end, and is hinged to the push rod hinge point 111 in the middle of the rear seat pan connecting rod 108 at the other end (the hinge points at both ends of the seat pan motor 101 are interchangeable), and the wall plate hinge point 110 of the rear seat pan connecting rod 108 is at the bottom. Figure 4a The initial position shown is Figure 6a During the movement to the forward position shown, the seat motor 101 pushes the rear seat connecting rod 108 to pivot forward, thereby realizing the movement of tilting forward or moving the seat support tube 6 forward. In addition, it is conceivable that if the seat motor 101 is hinged at its other end to the push rod hinge point 111 of the rear seat connecting rod 108 at the bottom, and the wall hinge point 110 of the rear seat connecting rod 108 is in the middle, then the seat motor 101 pulls the rear seat connecting rod 108 backward to pivot, thereby realizing the movement of moving the seat support tube 6 forward.

[0068] Figure 4b and Figure 6b Shows Figures 3 to 6A schematic diagram of a second variant embodiment of the arrangement of the bidet motor 101 is shown. Figure 4b and Figure 6b The positions or states of the main components of the seat support tube 6 or the seat pan 4 when they are in the initial position and in the forward position are shown in principle diagrams. Figures 3 to 6 In the second variant embodiment, the bidet motor 101 is hinged to the rear pipe 11 at one end and to the push rod hinge point 111 in the middle of the front bidet connecting rod 106 at the other end (the hinge points at both ends of the bidet motor 101 are interchangeable). At this time, (one of) the front bidet connecting rod 106 has three hinge points 109, 111, 110, and the wall panel hinge point 110 is at the bottom. Figure 4b The initial position shown is Figure 6b During the movement to the forward position shown, the seat bowl motor 101 pushes the front seat bowl connecting rod 106 to pivot forward, thereby realizing the movement of tilting forward or moving the seat bowl support tube 6 forward. In addition, it is conceivable that if the seat bowl motor 101 is hinged with its other end to the push rod hinge point 111 of the front seat bowl connecting rod 106 at the bottom, and the wall hinge point 110 of the front seat bowl connecting rod 106 is in the middle, then the seat bowl motor 101 pulls the rear seat bowl connecting rod 108 backward to pivot, thereby realizing the movement of moving the seat bowl support tube 6 forward.

[0069] Figure 4c and Figure 6c Shows Figures 3 to 6 A schematic diagram of a third variant embodiment of the arrangement of the bidet motor 101 is shown. Figure 4c and Figure 6c The positions or states of the main components of the seat support tube 6 or the seat pan 4 when they are in the initial position and in the forward position are shown in principle diagrams. Figures 3 to 6 In the third variant embodiment, the bidet motor 101 is hinged to the wall panel 9 at one end and to the push rod hinge point 111 in the middle of the rear bidet connecting rod 108 at the other end (the hinge points at both ends of the bidet motor 101 are interchangeable), and the wall panel hinge point 110 of the rear bidet connecting rod 108 is at the bottom. Figure 4c The initial position shown is Figure 6c During the movement to the forward position shown, the seat motor 101 pushes the rear seat connecting rod 108 to pivot forward, thereby realizing the movement of tilting forward or moving the seat support tube 6 forward. In addition, it is conceivable that if the seat motor 101 is hinged at its other end to the push rod hinge point 111 of the rear seat connecting rod 108 at the bottom, and the wall hinge point 110 of the rear seat connecting rod 108 is in the middle, then the seat motor 101 pulls the rear seat connecting rod 108 backward to pivot, thereby realizing the movement of moving the seat support tube 6 forward.

[0070] Figure 4d and Figure 6d Shows Figures 3 to 6 A schematic diagram of a fourth variant embodiment of the arrangement of the bidet motor 101 is shown. Figure 4d and Figure 6d The positions or states of the main components of the seat support tube 6 or the seat pan 4 when they are in the initial position and in the forward position are shown in principle diagrams. Figures 3 to 6 In the fourth variant embodiment, the bidet motor 101 is hinged to the wall panel 9 at one end and to the push rod hinge point 111 in the middle of the front bidet connecting rod 106 at the other end (the hinge points at both ends of the bidet motor 101 are interchangeable). At this time, (one of) the front bidet connecting rod 106 has three hinge points 109, 111, 110, and the wall panel hinge point 110 is at the bottom. Figure 4d The initial position shown is Figure 6d During the movement to the forward position shown, the seat bowl motor 101 pushes the front seat bowl connecting rod 106 to pivot forward, thereby realizing the movement of tilting forward or moving the seat bowl support tube 6 forward. In addition, it is conceivable that if the seat bowl motor 101 is hinged with its other end to the push rod hinge point 111 of the front seat bowl connecting rod 106 at the bottom, and the wall hinge point 110 of the front seat bowl connecting rod 106 is in the middle, then the seat bowl motor 101 pulls the rear seat bowl connecting rod 108 backward to pivot, thereby realizing the movement of moving the seat bowl support tube 6 forward.

[0071] Figure 4e and Figure 6e The schematic diagram shows an exemplary embodiment in which the bidet drive is designed as a toothed plate motor mechanism. Figure 4e and Figure 6e The positions or states of the main components of the seat support tube 6 or the seat pan 4 when they are in the initial position and in the forward position are shown in principle diagrams. Figures 3 to 6 The bidet drive shown is configured as a bidet motor 101 in the form of a push rod motor. In this embodiment, a toothed plate-motor mechanism is used to drive the bidet linkage mechanism. Fig.15a and Fig.15b The gear plate-motor mechanism may include a gear plate 230 and a motor 232 with a gear 231 on the output shaft. The working principle thereof may be referred to in the following description of Fig.15a and Fig.15b Description.

[0072] In this embodiment, the motor 232 of the toothed plate-motor mechanism can be arranged on the seat basin 4, that is, arranged next to one of the two support tube hinge points 109, or can also be arranged on the seat frame 5, for example, at its wall plate 9 (such as Figure 4eand 6e ), that is, arranged beside one of the two wall hinge points 110. Accordingly, a front seat basin connecting rod 106 or a rear seat basin connecting rod 107, 108 is configured as a toothed plate 230. The motor 231 drives the gear 231 so that it drives the meshing teeth 233 on a seat basin connecting rod 106, 107, 108, so as to realize the forward movement of the entire seat basin 4.

[0073] In another embodiment not shown, a recliner-motor mechanism can be used to drive the bidet connecting rod mechanism instead of the push rod motor. The recliner-motor mechanism itself is known, and includes an adjuster with a rotating disk and a fixed disk and a motor capable of driving the rotating disk to rotate. The recliner can be arranged at any one of the hinges between the bidet 4 and the four bidet connecting rods 106, 107, 108 (here, for example, the support tube hinge point 109), wherein the fixed disk of the recliner can be connected to the bidet 4, and the rotating disk can be connected to the bidet connecting rods 106, 107, 108. The rotating disk is driven by the motor to rotate relative to the fixed disk, thereby realizing the swing of the bidet connecting rods 106, 107, 108.

[0074] Combine the following Figure 1 and Figure 7 The structure of the seat frame adjustment assembly 200 of the seat cushion adjustment system 1 is described in detail. The seat frame adjustment assembly 200 may include a sheet metal connector 13 (see FIG. 1 ) that supports the seat frame 5 movably on the upper slide rail 12 and is specifically fixed thereon. Fig.10 ) on the seat frame linkage, and a seat frame drive that drives the seat frame linkage and thus the seat frame 5 to move, for example, with a motor to provide a driving force or torque.

[0075] Like the seat basin drive, the seat frame drive can be configured as a seat frame motor 201 in the form of a push rod motor known per se. The push rod motor or the seat frame motor 201 has a motor assembly 202 and a push rod 203, and the motor assembly 202 can convert the rotational motion of the motor shaft into the linear reciprocating motion of the push rod 203. Similarly, the motor assembly 202 of the seat frame motor 201 is pivotally connected to a seat frame motor bracket 204, and the seat frame motor bracket 204 is fixed to, for example, welded to, the front cross tube 10. Similarly, in addition to the push rod motor, the seat frame drive can also be configured as other forms of motor drive mechanisms, such as a motor providing a driving force or torque that can drive the swinging motion of the seat frame link mechanism, such as the toothed plate-motor mechanism and the recliner-motor mechanism mentioned below as examples.

[0076] The seat frame linkage mechanism comprises two front seat frame links 206 arranged opposite and parallel to each other on the inner front sides of the two wall panels 9, and two rear seat frame links 207, 208 arranged opposite and parallel to each other on the inner rear sides of the two wall panels 9. Each front seat frame link 206 is pivotally connected to the inner front sides of the two wall panels 9 at a wall panel hinge point 210, for example, via rivets, and is pivotally connected to the upper rail 12 or its sheet metal connection 13 at an upper rail hinge point 209, for example, also via rivets. Each rear seat frame link 207, 208 is pivotally connected to the rear cross tube 11 at a rear cross tube hinge point 220, for example, by being mounted on the rear cross tube 11 and pivotally connected around the rear cross tube 11, and is pivotally connected to the upper rail 12 at the upper rail hinge point 209, for example, also via rivets. Therefore, the four seat frame connecting rods 206, 207, 208 together support the seat frame 5 on the two upper slide rails 12. The upper slide rail 12 can be supported on the lower slide rail 14 fixed to the vehicle floor (see Fig.10 ) and can move forward and backward along the x-axis to adjust the x-position of the vehicle seat.

[0077] In addition, one of the rear seat frame links 208, here the right rear seat frame link 208, also has a push rod hinge point 211, and the push rod hinge point 211 and the rear cross tube hinge point 220 are arranged on both sides of the upper slide rail hinge point 209. The right rear seat frame link 208 is pivotally connected to the free end of the push rod 203 of the seat frame motor 201 at the push rod hinge point 211, for example, via bolts. Therefore, the push rod 203 of the seat frame motor 201 can drive the right rear seat frame link 208 to pivot around the upper slide rail hinge point 209 during linear motion, and the right rear seat frame link 208 then drives the seat frame 5 to move forward and backward in the x direction and up and down in the z direction at the same time. The other three seat frame links 206 and 207 move in a driven manner.

[0078] Figure 8 and Fig. 9The positions or states of the main components of the seat frame adjustment assembly 200 when the seat frame 5 and thus the entire seat cushion 4 and the seat are in the lowered position are shown in a schematic diagram and a principle diagram, respectively. It can be seen here that the front and rear seat frame links 206, 208 on the right side extend obliquely from the upper rear side to the lower front side in the x direction. The front and rear seat frame links 206, 208 on the right side are pivotally connected to the upper rail 12 at the upper rail hinge point 209 on the one hand, and pivotally connected to the wall panel 9 and the rear crossbar 11 at the wall panel hinge point 210 above the upper rail hinge point 209 and the rear crossbar hinge point 220 on the other hand. Although the front and rear seat frame links 206, 207 on the left side are not visible here, it can be imagined that they are arranged symmetrically and parallel to the front and rear seat frame links 206, 208 on the right side. The motor assembly 202 of the seat frame motor 201 is pivotally fixed to the front cross tube 10 via the seat frame motor bracket 204, and the free end of the push rod 203 of the seat frame motor 201 is pivotally connected to the right rear seat frame connecting rod 208 at the push rod hinge point 211 below the upper slide rail hinge point 209. The push rod 203 of the seat frame motor 201 is in a retracted state.

[0079] from Figure 8 and Fig. 9 Based on the state of the seat frame 5 or the seat frame adjustment assembly 200 shown, the seat frame motor 201 can drive the right rear seat frame connecting rod 208 to rotate counterclockwise and thus drive the rear cross tube 11 and thus the entire seat frame 5 to move upward along the z direction to Fig.10 and Fig.11 Raised position shown.

[0080] Fig.10 and Fig.11 The positions or states of the main components of the seat frame adjustment assembly 200 when the seat frame 5 is in the height adjustment position are shown in schematic diagrams and principle diagrams, respectively. It can be seen here that the push rod 203 of the seat frame motor 201 is in an extended state. The front and rear seat frame links 206, 208 have been pivoted counterclockwise to extend closer to vertical. In other words, Fig.10 and Fig.11 In the illustrated state, the acute angles of all the seat frame links 206, 207, 208 with the horizontal plane are Figure 8 and Fig. 9 In the state shown, the acute angles between all the seat frame links 206, 207, 208 and the horizontal plane increase. This causes the seat frame 5 and thus the entire seat cushion 3 and the seat to move upward by a certain distance in the z direction. At this time, the seat pan 4 supported on the seat frame 5 is also raised as the seat frame 5 is raised. In addition, since the backrest 2 is supported on the seat cushion 3, the backrest 2 is also raised as the seat cushion 3 is raised. This can maintain the comfort of riding, because the relative position relationship between the backrest 2 and the seat cushion 3 must meet the requirements of ergonomic design. If the seat frame 5 is raised while the height of the backrest 2 remains unchanged, the backrest 2 can no longer fit the back of the occupant, and the comfort is deteriorated.

[0081] It is conceivable that when the vehicle seat needs to be lowered, that is, when the seat frame 5 and thus the entire seat cushion 2 and the seat need to be transferred from the raised position to the lowered position, it is only necessary to rotate the seat frame motor 201 in the reverse direction to drive the right rear seat frame connecting rod 208 to rotate clockwise and thus drive the seat frame 5 and thus the entire seat cushion 3 and the seat to move downward along the z direction to the lower position. Figure 8 and Fig. 9 Lowered position shown.

[0082] Therefore, the height adjustment of the entire seat cushion 2 and thus the vehicle seat in the z direction can be independently performed by the seat frame adjustment component 200 of the seat cushion adjustment system 1. On the one hand, this can be like the height adjustment function of a conventional seat, so that the occupant sitting thereon can obtain a more comfortable height position. On the other hand, the height adjustment function of the vehicle seat can also be combined with the position adjustment of the seat basin 4 of the vehicle seat introduced above by the seat basin adjustment component 100. For example, after the seat basin 4 is adjusted to the forward position by the seat basin adjustment component 100 and the backrest 2 is folded, the backrest 2 can be used as a footrest for the rear passengers. At this time, the height of the seat back 2 can be further adjusted by the seat frame adjustment component 200, so as to adjust the leg comfort of the occupant to the best in an individual manner. Of course, other combined adjustment methods of the two are also conceivable.

[0083] Combination Fig.15a and Fig.15b Another seat cushion height adjustment mechanism for achieving seat cushion (or seat frame) height adjustment is exemplified, in which a toothed plate-motor mechanism is used to drive the seat frame connecting rod mechanism instead of the push rod motor. The toothed plate-motor mechanism may include a toothed plate 230 and a motor 232 with a gear 231 on the output shaft. Here, a rear seat frame connecting rod 207 may be constructed in the form of a toothed plate, that is, teeth 233 are provided on it, and the motor 232 may be embedded in the side wall 9 of the seat frame 5 and its gear 231 may mesh with the teeth 233 on the rear seat frame connecting rod 207. The motor 231 drives the gear 231 to mesh with the teeth 233 on the rear seat frame connecting rod 207, thereby achieving the swing of the rear seat frame connecting rod 207 and thus the height adjustment of the entire seat frame 5. Fig.15a The seat frame 5 is shown in the lowered position, while Fig.15b The raised position of the seat frame 5 is shown.

[0084] In another embodiment not shown, a recliner-motor mechanism may be used to drive the seat frame link mechanism instead of the push rod motor. The recliner may be provided at any one of the hinges between the seat frame 5 and the four seat frame links 206, 207, 208, wherein the fixed disk of the recliner may be connected to the seat frame 5, and the rotating disk may be connected to the seat frame links 206, 207, 208. The rotating disk is driven by the motor to rotate relative to the fixed disk, thereby achieving the swing of the seat frame links 206, 207, 208.

[0085] Various seat cushion height adjustment mechanisms for achieving seat cushion height adjustment are disclosed in the following exemplary patent documents, which can be used to replace the seat frame adjustment assembly 200 of the embodiment of the present invention to achieve the height adjustment function of the seat cushion, and can be combined with the seat basin adjustment assembly 100 of the embodiment of the present invention to form the seat cushion adjustment system 1 of other embodiments of the present invention. The disclosures of these patent documents constitute part of the content of the present invention by reference.

[0086] For example, in patent document CN117621957A, the seat cushion is connected to the upper end of the height-adjusting rear connecting rod through an angle adjuster and a motor to drive the seat cushion to achieve the functions of folding and height adjustment;

[0087] In patent document CN218929267U, the seat cushion is driven by a double-screw motor connected to the middle of the high-adjustable rear connecting rod to achieve the seat cushion folding and height adjustment functions;

[0088] In patent document CN220785528U, the seat cushion is connected to the upper end of the rear height-adjusting connecting rod through a tooth plate and a motor to drive the seat cushion to achieve the functions of folding and height-adjusting.

[0089] In patent document CN117183847A, the seat cushion is connected to the upper end of the height-adjustable front connecting rod through an angle adjuster and a motor to drive the seat cushion to achieve the functions of folding and height adjustment;

[0090] In patent document CN221393145U, the seat cushion is connected to the upper end of the height-adjustable rear connecting rod through a gear plate and a motor to drive the seat cushion to achieve the functions of folding and height-adjusting.

[0091] In patent document CN221272690U, the seat cushion is driven by connecting the RS drive motor to the middle of the high-profile front link (or connected to the lower end of the high-profile rear link through the angle adjuster and the motor), so as to realize the seat cushion folding and height adjustment functions;

[0092] In patent document CN118578952A, the seat cushion is driven by a screw motor connected to the lower end of the high-adjustment front link and a double-toothed plate and a motor connected to the lower end of the high-adjustment rear link, thereby realizing the seat cushion folding and height adjustment functions.

[0093] In addition, since the seat frame adjustment assembly 200 and the seat bowl adjustment assembly 100 in the present invention are both based on a four-bar linkage structure, the seat cushion height adjustment mechanism disclosed in the above-mentioned patent document can also be adaptively used to replace the seat bowl adjustment assembly 100 of the embodiment of the present invention to adjust the seat bowl 4, and combined with various forms of seat frame adjustment assemblies 200 to form the seat cushion adjustment system 1 of other embodiments of the present invention.

[0094] Fig.12The following is an exemplary sequence of steps for combining and adjusting a vehicle seat using the seat basin adjustment assembly 100 and the seat frame adjustment assembly 200 of the seat cushion adjustment system 1:

[0095] Step 1: Slide the upper slide rail 12 forward relative to the lower slide rail 14 so that the entire vehicle seat slides forward along the x direction;

[0096] Step 2: With the aid of the seat frame adjustment assembly 200 of the seat cushion adjustment system 1, the seat cushion 3 and thus the entire vehicle seat are lowered in the z direction (and moved backward in the x direction at the same time);

[0097] Step 3: With the aid of the seat pan adjustment assembly 100 of the seat cushion adjustment system 1, the seat pan 4 is adjusted forward in the x direction to a forward position (and simultaneously moved downward in the z direction);

[0098] Step 4: Fold the backrest 2 forward toward the seat cushion 3.

[0099] Here, it can be achieved that as much leg room as possible is freed up for the occupants of the rear seats behind the vehicle seat not only in the x direction but also in the z direction. As mentioned above, the back of the backrest 2 can be used for the rear seat occupants to place their feet, and the height of the feet can be further adjusted to the most comfortable position by the seat frame adjustment assembly 200 after step 4.

[0100] Fig.13 The comparison shows the height difference ΔH=H1-H2 between the seat pan 4 and the seat cushion 3 or its highest point and the vehicle floor when the seat pan 4 is in the initial position (i.e., normal seating position) (left figure) and the forward position (right figure). Starting from the left figure, the seat pan 4 moves forward and downward to the state shown in the right figure, and the height difference (i.e., the space left) ΔH of the seat pan 4 in the z direction can be as high as 38.8mm, so the STO (seat contour surface) of the backrest 2 can be effectively avoided, and the backrest 2 can be turned forward as flat as possible.

[0101] Fig.14 The height difference H3-H4 between the seat cushion 3 or its highest point and the vehicle floor is shown in comparison when the seat frame 5 and thus the seat cushion 3 are in the highest position (left figure) and the lowest position (right figure). The seat cushion 3 can move upward or downward in the z-direction, thereby switching between the states shown in the left figure and the right figure. The height difference (i.e., the space left) of the seat cushion 3 in the z-direction can be as high as 50 mm, so the height of the seat can be adjusted over a wide range.

[0102] Finally, it should be pointed out that the above embodiments are only used to understand and explain the present invention, and do not limit the protection scope of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and all these modifications do not depart from the protection scope of the present invention.

Claims

1. A vehicle seat with a seat cushion adjustment system, characterized in that: The vehicle seat comprises a seat cushion and a backrest that can be folded toward the seat cushion, the seat cushion comprising a seat pan for supporting an occupant and a seat frame for supporting the seat pan, the seat cushion adjustment system comprising a seat pan adjustment component, the seat pan being able to be switched between an initial position and a forward position by means of the seat pan adjustment component, wherein the seat pan is capable of being seated by an occupant in its initial position, and the seat pan is moved forward a distance in the x direction in its forward position than in its initial position, so that the backrest can be folded toward the seat cushion to a greater extent in the forward position of the seat pan than in the initial position of the seat pan without being hindered by the seat cushion, Among them, the seat bowl adjustment assembly has a seat bowl connecting rod mechanism and a seat bowl drive capable of driving the seat bowl connecting rod mechanism to swing, the seat bowl connecting rod mechanism has multiple seat bowl connecting rods, the seat bowl is movably supported on the seat frame through the seat bowl connecting rods, each seat bowl connecting rod is pivotally connected to the seat bowl on the one hand and pivotally connected to the seat frame on the other hand, so that the seat bowl is converted between an initial position and a forward position through the swinging movement of each seat bowl connecting rod.

2. The vehicle seat according to claim 1, characterized in that The bidet driver is configured as a push rod motor, a push rod of the push rod motor being pivotally connected to one of the bidet links, so that the push rod can drive the one bidet link to swing when it moves linearly; Alternatively, the bidet driver is configured as a toothed plate-motor mechanism, which includes a toothed plate formed by one of the bidet links and a motor with a gear, and the motor drives the gear and then drives the meshed teeth on the bidet link to drive the bidet link to swing. Alternatively, the bidet drive is constructed as a recliner-motor mechanism, which includes an adjuster with a rotating disk and a fixed disk and a motor capable of driving the rotating disk to rotate, wherein the fixed disk of the recliner is connected to the bidet, and the rotating disk is connected to one of the bidet links, and the motor drives the rotating disk to rotate relative to the fixed disk, thereby driving the bidet link to swing.

3. The vehicle seat according to claim 1, characterized in that During the transition of the seat bowl between the initial position and the forward position, the seat bowl links swing past their vertical positions.

4. The vehicle seat according to claim 1, characterized in that The angle between the seat pan link and the horizontal plane in the forward position of the seat pan is smaller than the angle between the seat pan and the horizontal plane in the initial position of the seat pan, so that the seat pan is closer to the vehicle floor in the forward position than in the initial position.

5. The vehicle seat according to claim 1, characterized in that The seat pan linkage is designed such that the seat pan is inclined upwards to a greater extent in the forward position than in the initial position, viewed from the rear to the front.

6. The vehicle seat according to claim 1, characterized in that At least four bidet connecting rods are provided, and at least two bidet connecting rods are arranged successively front and back on the same side of the bidet.

7. The vehicle seat according to claim 1, characterized in that The seat pan link is pivotably connected to the seat pan on the one hand and to two opposite walls of the seat frame on the other hand.

8. The vehicle seat according to claim 1, characterized in that The seat cushion adjustment system also has a seat frame adjustment component, and the seat frame can be adjusted in height from the vehicle floor using the seat frame adjustment component.

9. The vehicle seat according to claim 8, characterized in that The seat frame adjustment assembly comprises a seat frame linkage mechanism and a seat frame driver capable of driving the seat frame linkage mechanism to swing, the seat frame linkage mechanism comprising a plurality of seat frame links, the seat frame being movably supported on an upper slide rail via the seat frame links, each seat frame link being pivotally connected to the seat frame on the one hand and to the upper slide rail of the vehicle seat on the other hand, so that the seat frame can adjust its height from the vehicle floor through the swinging movement of each seat frame link.

10. The vehicle seat according to claim 9, characterized in that The seat frame driver is configured as a push rod motor, a push rod of the push rod motor being pivotally connected to one of the seat frame links, so that the push rod can drive the one seat frame link to swing when it moves linearly; Alternatively, the seat frame driver is configured as a toothed plate-motor mechanism, which includes a toothed plate formed by one of the seat frame links and a motor with a gear, and the motor drives the gear and then drives the meshed teeth on the one seat frame link to drive the one seat frame link to swing. Alternatively, the seat frame drive is constructed as a recliner-motor mechanism, which includes an adjuster with a rotating disk and a fixed disk and a motor capable of driving the rotating disk to rotate, wherein the fixed disk of the recliner is connected to the seat frame, and the rotating disk is connected to one of the seat frame connecting rods. By driving the rotating disk to rotate relative to the fixed disk by the motor, the one seat frame connecting rod can be driven to swing.

Images