Automobile seat

Abstract

The present invention relates to an automobile seat, comprising a seat cushion framework assembly and a backrest framework assembly. The seat cushion framework assembly comprises a seat cushion side plates which are oppositely arranged, and a lifting framework assembly; the backrest framework assembly can rotate relative to the seat cushion side plates; the front end of the lifting framework assembly is hingedly connected to the seat cushion side plates, and the rear end of the lifting framework assembly is transmittingly connected to the backrest framework assembly by means of connecting rods; one end of each connecting rod is hingedly connected to the backrest framework assembly, and the other end is slidably connected to the lifting framework assembly; and when the backrest framework assembly rotates relative to the seat cushion side plates, the rear end of the lifting framework assembly can be driven to be lifted or lowered by means of the connecting rods. In the automobile seat of the present invention, when the backrest framework assembly rotates backwards for adjustment, the connecting rods drive the rear end of the lifting framework assembly to be lifted upwards, so as to compensate for the height difference caused by the rotation of the lower end of a backrest, and when the seat is laid flat backwards, the lifting framework assembly can improve the comfort of the seat when laid flat.

Description

Car seats Technical Field

[0001] This invention relates to the field of vehicle technology, and specifically to a car seat. Background Technology

[0002] The automotive industry is increasingly demanding more flexible seat usage scenarios, such as movie-watching and sleep modes. This necessitates a greater range of rearward adjustment for the backrest assembly, allowing the seat back to recline completely in sleep mode. Currently, the lower end of the car seat backrest is rotatably connected to the seat cushion, allowing it to rotate rearward around a center of rotation. During this rotation, the height difference between the lower end of the backrest and the rear end of the seat cushion changes, causing comfort issues. The greater the backrest adjustment angle, the greater the height difference between the backrest and the rear end of the seat cushion, resulting in more noticeable discomfort. Therefore, a new solution is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a car seat that solves the problem of discomfort caused by the height difference between the backrest and the rear end of the seat cushion when the backrest is rotated and adjusted backward.

[0004] The technical solution to achieve the above objectives is:

[0005] This invention provides an automobile seat, including a seat cushion frame assembly and a backrest frame assembly. The seat cushion frame assembly includes opposing seat cushion side panels and a lifting frame assembly. The backrest frame assembly is rotatable relative to the seat cushion side panels.

[0006] The front end of the lifting frame assembly is hinged to the side panel of the seat cushion, and the rear end of the lifting frame assembly is connected to the backrest frame assembly via a linkage. One end of the linkage is hinged to the backrest frame assembly, and the other end is slidably connected to the lifting frame assembly.

[0007] When the backrest frame assembly rotates relative to the seat cushion side panel, the rear end of the lifting frame assembly can be raised or lowered via the connecting rod.

[0008] A further improvement of the present invention for the automobile seat is that the rear end of the lifting frame assembly is located near the lower end of the backrest frame assembly.

[0009] A further improvement of the present invention for the car seat is that the lower end of the backrest frame assembly near the rotatable connection point with the seat cushion side plate is integrally formed with an outwardly extending bracket or connected to a separate bracket.

[0010] One end of the connecting rod is hinged to the bracket.

[0011] A further improvement of the present invention for the automobile seat is that the backrest frame assembly and the seat cushion side panel are rotatably connected via an adjuster.

[0012] A further improvement of the present invention for the automobile seat is that the lifting frame assembly includes opposing side connecting plates, the front end of which is hinged to the seat cushion side plate;

[0013] Two connecting rods are provided, one end of each connecting rod is hinged to both sides of the backrest frame assembly, and the other end of each connecting rod is slidably connected to the corresponding side connecting plate.

[0014] A further improvement of the present invention for the car seat is that a sliding groove is provided on the side connecting plate corresponding to the connecting rod;

[0015] The connecting rod is provided with a sliding block that slides in the sliding groove. During the rotation adjustment of the backrest frame assembly relative to the seat cushion side plate, the sliding block can slide in the sliding groove.

[0016] A further improvement of the present invention for the automotive seat is that the connecting rod and the corresponding side connecting plate are slidably connected by a slide rail mechanism.

[0017] A further improvement of the present invention for the car seat is that the seat cushion frame assembly is integrally formed with a fixing frame or connected to a separate fixing frame at the front end of the side connecting plate.

[0018] The fixing frame is hinged to the front end of the side connecting plate.

[0019] A further improvement of the present invention for the automotive seat is that the lifting frame assembly further includes a support tube supporting the rear end of the two side connecting plates.

[0020] A further improvement of the present invention for the automotive seat is that the lifting frame assembly further includes a suspension member attached to the support tube.

[0021] A further improvement of the present invention for the automobile seat is that the seat cushion frame assembly further includes a rear tube that supports and connects to the rear end of the seat cushion side plate;

[0022] The connecting rod extends beyond the rear tube, and the end of the connecting rod near the lifting frame assembly bends downward and slides into the lifting frame assembly.

[0023] A further improvement of the present invention for the automobile seat is that the perpendicular line from the rotation center of the backrest frame assembly forms an angle with the line connecting the rotation center to the center of the hinge point at the end of the connecting rod, and this angle changes as the backrest frame assembly rotates forward or backward.

[0024] A further improvement of the present invention for the automobile seat is that the perpendicular line from the rotation center of the backrest frame assembly forms an angle with the line connecting the rotation center to the center of the hinge point at the end of the connecting rod, and the angle in the flattened position of the backrest frame assembly is greater than the angle in the designed position of the backrest frame assembly.

[0025] A further improvement of the present invention for the automobile seat is that the perpendicular line from the rotation center of the backrest frame assembly forms an angle with the line connecting the rotation center to the center of the hinge point at the end of the connecting rod, and the angle is substantially a right angle in the flattened position of the backrest frame assembly.

[0026] A further improvement of the present invention for the automobile seat is that, when the backrest frame assembly rotates rearward relative to the seat cushion side panel, the rear end of the lifting frame assembly can be lifted via the connecting rod; and when the backrest frame assembly rotates forward relative to the seat cushion side panel, the rear end of the lifting frame assembly can be lowered via the connecting rod.

[0027] The beneficial effects of the car seat of the present invention include, but are not limited to:

[0028] The car seat of the present invention is provided with a lifting frame assembly, which is linked to the backrest frame assembly via a connecting rod. When the backrest frame assembly is rotated backward for adjustment, the connecting rod will lift the rear end of the lifting frame assembly upward to compensate for the height difference caused by the rotation of the lower end of the backrest. When the seat is reclined, the lifting frame assembly can improve the comfort of the seat when it is flat.

[0029] The car seat of the present invention achieves transmission connection through a linkage, which is simple in structure, occupies little space, and has little impact on the structural strength of the original car seat.

[0030] The car seat of this invention solves the comfort problem and enhances the competitiveness of the product.

[0031] The linkage and lifting frame assembly of the automobile seat of the present invention meets the requirements of lightweight modular design and can be installed in the seat cushion frame assembly. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the frame assembly of the car seat of the present invention.

[0033] Figure 2 is an exploded structural diagram of the lifting frame assembly, connecting rod, part of the backrest frame assembly, and part of the seat cushion frame assembly in the car seat of the present invention.

[0034] Figure 3 is a schematic diagram of the backrest frame assembly in the conventional design position of the car seat of the present invention.

[0035] Figure 4 is a schematic diagram of the backrest frame assembly in the car seat of the present invention, which is adjusted forward to the maximum position.

[0036] Figure 5 is a schematic diagram of the backrest frame assembly in the car seat of the present invention adjusted to the maximum rear position.

[0037] Figure 6 is a schematic diagram of the connecting rod in the state shown in Figure 4.

[0038] Figure 7 is a schematic diagram of the connecting rod in the state shown in Figure 3.

[0039] Figure 8 is a structural schematic diagram of the connecting rod in the state shown in Figure 5.

[0040] Figure 9 is a schematic diagram of the structure of the car seat of the present invention with the backrest adjusted to the maximum position.

[0041] Figure 10 is a structural schematic diagram of the car seat of the present invention with the backrest in the conventional design position.

[0042] Figure 11 is a schematic diagram of the structure of the car seat of the present invention with the backrest adjusted to the maximum position.

[0043] Explanation of reference numerals in the attached drawings: 1—Seat cushion; 10—Seat cushion frame assembly; 11—Seat cushion side panel; 12—Rear tube; 2—Backrest; 20—Backrest frame assembly; 21—Backrest side panel; 211—Lower support plate; 22—Lower end; 23—Backrest top plate; 24—Upper connecting plate; 25—Lower connecting plate; 26—Drive mechanism; 261—Drive motor; 262—Angle adjuster; 3—Lifting pad; 30—Lifting frame assembly; 31—Front end; 32—Rear end; 33—Side connecting plate; 331—Sliding groove; 332—Connecting hole; 34—Support tube; 40—Connecting rod; 41—Sliding block; 42—Hinge hole; 51—Bracket; 52—Fixed bracket; 521—Connecting hole; 60—Suspension component. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] Referring to Figure 1, this invention provides a car seat to address the problem of poor comfort caused by the height difference between the lower end of the backrest and the rear end of the seat cushion when the backrest is adjusted backward, with the discomfort becoming more pronounced the larger the backrest adjustment angle. The car seat of this invention utilizes a linkage and a lifting frame assembly, allowing the lifting frame assembly to work in conjunction with the backrest frame assembly. During the backward adjustment of the backrest frame assembly, the linkage lifts the rear end of the lifting frame assembly upward, compensating for the height difference caused by the rotation of the lower end of the backrest and achieving a comfortable, reclined seat. The structure of this car seat will be described below with reference to the accompanying drawings.

[0046] Referring to Figure 1, a structural schematic diagram of the car seat frame assembly of the present invention is shown. The structure of the car seat of the present invention will be described below with reference to Figure 1.

[0047] As shown in Figure 1, the car seat of the present invention includes a seat cushion frame assembly 10 and a backrest frame assembly 20. The backrest frame assembly 20 is rotatable relative to the seat cushion frame assembly 10, realizing the rotation adjustment function of the car seat backrest. The seat cushion frame assembly 10 includes a seat cushion side plate 11 disposed opposite to each other and a lifting frame assembly 30. The lifting frame assembly 30 has a front end 31 and a rear end 32 opposite to each other. The front end 31 of the lifting frame assembly 30 is hinged to the seat cushion side plate 11 of the seat cushion frame assembly 10. The rear end 32 of the lifting frame assembly 30 is connected to the backrest frame assembly 20 through a connecting rod 40. One end of the connecting rod 40 is hinged to the backrest frame assembly 20, and the other end is slidably connected to the lifting frame assembly 30. The rear end 32 of the lifting frame assembly 30 can be raised or lowered through the hinge connection of the front end 31.

[0048] When the backrest frame assembly 20 rotates relative to the seat cushion side plate 11 of the seat cushion frame assembly 10, the backrest frame assembly 20 can drive the rear end of the lifting frame assembly 30 to rise or fall via the connecting rod 40. Specifically, when the backrest frame assembly 20 rotates backward for adjustment, the rear end 32 of the lifting frame assembly 30 is raised relative to the front end 31 via the transmission of the connecting rod 40, compensating for the height difference caused by the backrest rotation adjustment (or the height difference formed between the backrest and the seat cushion after rotation adjustment), thus improving the comfort of the car seat. When the backrest frame assembly 20 rotates forward again, the rear end 32 of the lifting frame assembly 30 is lowered relative to the front end 31 via the transmission of the connecting rod 40, allowing the lifting frame assembly 30 to return to its pre-lifted state.

[0049] In one specific embodiment of the present invention, the backrest frame assembly 20 of the automobile seat can be rotated and adjusted to a flattened state relative to the seat cushion frame assembly 10. During the rotation adjustment of the backrest frame assembly 20, the rear end 32 of the lifting frame assembly 30 is lifted upward around the front end 31 through the transmission of the connecting rod 40 until the rear end 32 of the lifting frame assembly 30 approaches the upper surface of the backrest frame assembly 20. The height difference between the rear end 32 of the lifting frame assembly 30 and the upper surface of the backrest frame assembly 20 is sufficient to satisfy ergonomics. Preferably, the height difference between the two is zero.

[0050] Referring to Figures 10 and 11, the backrest 2 of the car seat can rotate backward from its designed position to a flattened state, which can also be referred to as a reclining position. The rear end of the lifting pad 3 formed by the lifting frame assembly 30 is raised upward, and the upper surface of the lifting pad 3 is close to the upper surface of the backrest 2, which can avoid discomfort to the lower back caused by a large height difference between the backrest 2 and the seat cushion 1. As shown in Figures 10 and 11, the rear end of the lifting pad 3 is raised from a state that is roughly flush with the rear end of the seat cushion 1 to a state that is above the seat cushion 1 and close to the upper surface of the lower end of the backrest 2.

[0051] Furthermore, as shown in Figure 3, the backrest frame assembly 20 of the car seat is designed to be generally upright. At this time, the rear end 32 of the lifting frame assembly 30 is placed inside the seat cushion frame assembly 10, as shown in Figure 10. In this state, the backrest frame assembly 20 can rotate forward at a certain angle, as shown in Figures 4 and 9. As the backrest frame assembly 20 rotates forward, the rear end of the lifting pad 3 is lowered via the connecting rod 40. In the effect shown in Figure 9, the rear end of the lifting pad 3 is lower than the rear end of the seat cushion 1. This downward descent is relatively small because the backrest frame assembly 20 typically only rotates forward at a small angle, and will not cause discomfort.

[0052] In one specific embodiment of the present invention, as shown in FIG1, the rear end 32 of the lifting frame assembly 30 is disposed near the lower end 22 of the backrest frame assembly 20.

[0053] When the lifting frame assembly 30 is set, the lifting frame assembly 30 can be embedded in the seat cushion frame assembly 20. The front end 31 of the lifting frame assembly 30 is hinged to the corresponding part of the seat cushion frame assembly 20. The rear end 32 of the lifting frame assembly 30 is set close to the lower end of the backrest frame assembly 20. The rear end 32 of the lifting frame assembly 30 can rotate upward around the front end 31 to achieve lifting or rotate downward to achieve lowering.

[0054] In one specific embodiment of the present invention, as shown in Figures 1 to 3, the lower end 22 of the backrest frame assembly 20 near the rotatable connection point with the seat cushion side plate 11 of the seat cushion frame assembly 10 is provided with an outwardly extending bracket 51 or is connected to the bracket 51; one end of the connecting rod 40 is hinged to the bracket 51.

[0055] The end of the connecting rod 40 is provided with a hinge hole 42, and the bracket 51 is also provided with a through hole. The hinge hole 42 and the through hole are aligned and then the hinge connection is achieved by the through bolt bushing or rivet.

[0056] The bracket 51 can be a separate component, connected to the lower end 22 of the backrest frame assembly 20 by welding or screws. The bracket 51 can also be part of the backrest frame assembly 20, that is, integrally formed with the backrest frame assembly 20.

[0057] Preferably, as shown in Figures 1 and 3, the backrest frame assembly 20 includes a pair of backrest side panels 21, a backrest top plate 23 connected to the top of the pair of backrest side panels 21, an upper connecting plate 24 connected to the upper part of the pair of backrest side panels 21, and a lower connecting plate 25 connected to the lower part of the pair of backrest side panels 21. Further, the pair of backrest side panels 21 includes a lower support plate 211 and an upper support plate connected to the lower support plate 211. Referring to Figure 10, a backrest foam and a backrest cover are fabricated on the backrest frame assembly 20, thereby forming the backrest 2. The bracket 51 is positioned at the lower end 22 of the lower support plate 211 of the backrest frame assembly 20.

[0058] In one specific embodiment of the present invention, as shown in Figures 1 to 3, the lifting frame assembly 30 includes opposing side connecting plates 33, the front end of which is hinged to the seat cushion side plate 11 of the seat cushion frame assembly 10; two side connecting plates 33 are provided here. Two connecting rods 40 are provided, which are respectively hinged to both sides of the backrest frame assembly 20, and the other end of the connecting rod 40 is slidably connected to the corresponding side connecting plate 33.

[0059] The side connecting plate 33 of the lifting frame assembly 30 is positioned close to the lower support plate 211 of the corresponding backrest frame assembly 20. The rear end of the side connecting plate 33 is slidably connected to the corresponding end of the connecting rod 40, and the other end of the connecting rod 40 is hinged to the bracket 51 at the lower end of the corresponding lower support plate 211. The two connecting rods 40 can synchronously lift or lower the two side connecting plates 33, improving the stability of the lifting and lowering adjustment process of the lifting frame assembly 30.

[0060] Furthermore, a sliding groove 331 is provided on the side connecting plate 33 corresponding to the connecting rod 40; a sliding block 41 is provided on the connecting rod 40 corresponding to the sliding groove 331 and slides in the sliding groove 331. During the process of the backrest frame assembly 20 rotating and adjusting relative to the seat cushion side plate 11 of the seat cushion frame assembly 10, the sliding block 41 can slide in the sliding groove 331.

[0061] As shown in Figures 6 and 4, when the backrest frame assembly 20 is rotated forward to a certain angle, the sliding block 41 slides to the first end (in this case, the rear end) of the sliding groove 331. The interaction between the first end of the sliding groove 331 and the sliding block 41 restricts the angle of forward rotation of the backrest frame assembly 20. At this time, the backrest frame assembly 20 can only be rotated backward for adjustment. In the state shown in Figure 6, the vertical line (shown by the dashed line) of the rotation center of the backrest frame assembly 20 and the line (shown by the solid line) connecting the rotation center to the hinge point center at the end of the connecting rod 40 are on the same straight line.

[0062] Typically, when the backrest frame assembly 20 rotates forward to its forward limit position, the backrest 2 can be stopped against the seat cushion 1 by the outer stop point, preventing further forward rotation. The outer stop point can be located, for example, on the seat cushion 1, such as its seat cushion frame assembly 10, and the backrest 2 is stopped at this outer stop point in the forward limit position, preventing further forward rotation. Therefore, the sliding groove 331 can be designed to be longer rearward, so that in the forward limit position of the backrest 2 shown in Figures 6 and 4, the sliding block 41 has not yet reached the first end or rear end of the sliding groove 331, but is still in its forward position.

[0063] As shown in Figures 7 and 3, when the backrest frame assembly 20 is in its conventional design position, the sliding block 41 slides in the middle of the sliding groove 331. At this time, the backrest frame assembly 20 can be adjusted by rotating forward or backward. In the state shown in Figure 7, the perpendicular line from the rotation center of the backrest frame assembly 20 (shown as a dashed line) forms an angle A with the line connecting the rotation center to the center of the hinge point at the end of the connecting rod 40 (shown as a solid line). This angle A is acute, equivalent to the backrest frame assembly 20 rotating backward relative to the seat cushion frame assembly 10 in the state shown in Figure 6 by an angle A.

[0064] As shown in Figures 8 and 5, when the backrest frame assembly 20 is in the flattened state, the sliding block 41 slides to the second end (here, the front end) of the sliding groove 331. At this time, the backrest frame assembly 20 can only rotate forward for adjustment. In the state shown in Figure 8, it is equivalent to the backrest frame assembly 20 rotating backward and lying flat relative to the seat cushion frame assembly 10 in the state shown in Figure 6. Here, the angle A between the vertical line (shown by the dashed line) of the rotation center of the backrest frame assembly 20 and the center line (shown by the solid line) connecting the rotation center to the center of the hinge point at the end of the connecting rod 40 is basically a right angle. This allows the backrest 2 to be basically horizontally aligned with the seat cushion 1 in the flattened state, thus improving comfort. Here, the angle A always changes with the forward or backward rotation of the backrest frame assembly 20, thereby driving the connecting rod 40 to move accordingly. Through the sliding connection between the connecting rod 40 and the side connecting plate 33, the rear end of the side connecting plate 33 continues to be raised or lowered.

[0065] Typically, when the backrest frame assembly 20 rotates backward to its rearmost position (e.g., corresponding to the flat position), the backrest 2 can also rely on an additional outer stop point to abut against the seat cushion 1, preventing further rearward rotation. This additional outer stop point can be provided, for example, on the seat cushion 1, such as its seat cushion frame assembly 10, and the backrest 2 is stopped at this additional outer stop point in the rearmost position, preventing further rearward rotation. Therefore, the sliding groove 331 can be designed to be longer forward, so that in the rearmost position of the backrest 2 shown in Figures 8 and 5, the sliding block 41 has not yet reached the second end or front end of the sliding groove 331, but is still in its rearward position.

[0066] As shown in Figures 6 and 7, when the backrest frame assembly 20 is rotated backward for adjustment, the sliding block 41 of the connecting rod 40 slides from the first end to the second end in the sliding groove 331. During the sliding process, the connecting rod 40 can drive the rear end of the side connecting plate 33 of the lifting frame assembly 30 to be slightly lifted upward.

[0067] As shown in Figures 7 and 8, as the backrest frame assembly 20 rotates backward for adjustment, the sliding block 41 pulls the rear end of the side connecting plate 33 of the lifting frame assembly 30 upward. When the backrest frame assembly 20 rotates to the flattened state, the rear end of the side connecting plate 33 is raised to its highest position. Here, when the sliding block 41 of the connecting rod 40 slides to the second end of the sliding groove 331, the sliding block 41 has reached its limit position. Referring to Figure 11, after the foam and cover are installed, the rear end of the lifting pad 3 is close to the lower end of the backrest 2.

[0068] Preferably, the sliding groove 331 is elongated and extends through the inner and outer surfaces of the side connecting plate 33. The sliding block 41 can be integrally formed on the end of the connecting rod 40, or it can be connected to the end of the connecting rod 40 as a separate part. When the sliding block 41 is a separate part, it can be connected to the connecting rod 40 by welding or bolting. Further, the sliding block 41 is preferably elongated, and it can also be square or elongated, which can prevent the sliding block 41 from rotating within the sliding groove 331, allowing it to slide and adjust only along the sliding groove 331.

[0069] In another preferred embodiment, the sliding connection between the connecting rod 40 and the corresponding side connecting plate 33 can also be achieved by a slide rail mechanism, which includes a fixed rail and a movable rail slidably disposed on the fixed rail. The fixed rail can be fixedly connected to one of the side connecting plate 33 and the connecting rod 40, for example, on one of its sides, and the movable rail can be fixedly connected to the other of the side connecting plate 33 and the connecting rod 40, for example, on one of its sides facing each other.

[0070] In one specific embodiment of the present invention, as shown in Figures 1 to 3, the seat side plate 11 of the seat frame assembly 10 has a fixing frame 52 formed at the front end of the side connecting plate 33 or is connected to a fixing frame 52; the fixing frame 52 is hinged to the front end of the side connecting plate 33.

[0071] The front end of the side connecting plate 33 is provided with a connecting hole 332, and the fixing bracket 52 is provided with a connecting hole 521. The connecting hole 332 and the connecting hole 521 are aligned and then hinged together by bolt bushings or rivets.

[0072] The fixing bracket 52 can be a separate component, connected to the corresponding part of the seat cushion side plate 11 of the seat cushion frame assembly 10 by welding or screws. The fixing bracket 52 can also be part of the seat cushion side plate 11 of the seat cushion frame assembly 10, that is, integrally formed with the seat cushion side plate 11.

[0073] Furthermore, a fixing bracket 52 is provided between the side connecting plate 33 and the seat cushion side plate 11 to achieve connection. The fixing bracket 52 allows a gap to be formed between the side connecting plate 33 and the seat cushion side plate 11 to accommodate the connecting rod 40.

[0074] Preferably, as shown in Figures 1 to 3, the seat cushion frame assembly 10 also includes a rear tube 12 that is supported and connected to the rear end of the seat cushion side plate 11. Referring to Figure 10, the seat cushion 1 is formed by fabricating seat cushion foam and seat cushion cover on the seat cushion frame assembly 10. The inner side of the formed seat cushion 1 has a receiving groove to receive the lifting pad 3 formed by the lifting frame assembly 30.

[0075] The lower part of the lower support plate 211 of the backrest frame assembly 20 is rotatably connected to the rear end of the seat cushion side plate 11, specifically to the lower connecting plate 110, which is considered part of the seat cushion side plate 11 and is known in itself. It is also known that the lower connecting plate 110 can be fixedly connected to the front seat cushion side plate body 111, for example, by bolts (see Figure 2). The lower support plate 211 of the backrest frame assembly 20 is rotated by a drive mechanism 26, which includes a drive motor 261 and an adjuster 262. The adjuster 262 is connected to the lower support plate 211, and its fixing plate is connected to the seat cushion side plate 11, or its lower connecting plate 110. The lower support plate 211 is rotatably connected to the seat cushion side plate 11 via the adjuster 262. The drive motor 261 is connected to the angle adjuster 262, which drives the angle adjuster 262 to rotate, thereby causing the lower support plate 211 to rotate together. The angle adjusters 262 of the two lower support plates 211 are connected by a synchronous rod, so that the two angle adjusters 262 can rotate synchronously.

[0076] When a rear tube 12 is provided at the rear of the seat frame assembly 10, the connecting rod 40 passes over the rear tube 12, and the end of the connecting rod 40 near the lifting frame assembly 30 bends downward and slides in connection with the lifting frame assembly 30.

[0077] Furthermore, the lifting frame assembly 30 also includes a support tube 34 supporting the rear ends of the two side connecting plates 33. A suspension member 60 is also attached to the support tube 34 to, for example, form a surface-shaped seat. Referring to Figure 10, the lifting foam and lifting surface cover are fabricated on the lifting frame assembly 30 to form the lifting pad 3.

[0078] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. An automobile seat comprising a seat cushion framework assembly (10) and a backrest framework assembly (20), the seat cushion framework assembly comprising oppositely arranged seat cushion side plates (11) and comprising a lifting framework assembly (30), the backrest framework assembly (20) being rotatable relative to the seat cushion side plates (11), characterized in that, a front end (31) of the lifting framework assembly (30) is hingedly connected to the seat cushion side plates (11), a rear end (32) of the lifting framework assembly (30) is drivingly connected to the backrest framework assembly (20) through a connecting rod (40), one end of the connecting rod (40) is hingedly connected to the backrest framework assembly (20), and the other end of the connecting rod (40) is slidingly connected to the lifting framework assembly (30); the rear end (32) of the lifting framework assembly (30) is lifted or lowered through the connecting rod (40) when the backrest framework assembly (20) rotates relative to the seat cushion side plates (11).

2. The automobile seat according to claim 1, wherein the rear end (32) of the lifting framework assembly (30) is arranged close to a lower end of the backrest framework assembly (20).

3. The automobile seat according to claim 1 or 2, wherein a lower end (22) of the backrest framework assembly (20) close to a rotating connection between the backrest framework assembly (20) and the seat cushion side plates (11) is integrally formed with an outwardly extending support (51) or is connected with a separate support (51).

2. The automobile seat according to claim 1, wherein 4. The automobile seat according to any one of claims 1 to 3, wherein the one end of the connecting rod (40) is hingedly connected to the support (51).

3. The automobile seat according to claim 1, wherein 5. The automobile seat according to any one of claims 1 to 4, wherein the backrest framework assembly (20) and the seat cushion side plates (11) are rotatably connected through an angle adjuster (262).

6. The automobile seat according to any one of claims 1 to 5, wherein the lifting framework assembly (30) comprises oppositely arranged side connecting plates (33), and a front end of each of the side connecting plates (33) is hingedly connected to the seat cushion side plates (11).

4. The automobile seat according to claim 1, wherein 7. The automobile seat according to any one of claims 1 to 6, wherein two connecting rods (40) are provided, one end of each of the connecting rods (40) is hingedly connected to the backrest framework assembly (20) on the two sides thereof, and the other end of each of the connecting rods (40) is slidingly connected to a corresponding side connecting plate (33).

5. The automobile seat according to claim 1, wherein 8. The automobile seat according to claim 7, wherein a sliding groove (331) is formed in the side connecting plate (33) corresponding to the connecting rod (40).

9. The automobile seat according to claim 8, wherein a sliding block (41) is provided on the connecting rod (40) corresponding to the sliding groove (331) and slidingly arranged in the sliding groove (331), and the sliding block (41) is slidable in the sliding groove (331) during rotation adjustment of the backrest framework assembly (20) relative to the seat cushion side plates (11).

6. The automobile seat according to claim 5, wherein 10. The automobile seat according to claim 7, wherein the connecting rod (40) and the corresponding side connecting plate (33) are slidingly connected through a sliding rail mechanism.

11. The automobile seat according to any one of claims 1 to 10, wherein a fixed frame (52) is integrally formed with or connected to a front end of the side connecting plate (33) corresponding to the seat cushion framework assembly (10).

7. The automobile seat according to claim 5, wherein 12. The automobile seat according to claim 11, wherein the fixed frame (52) is hingedly connected to the front end of the side connecting plate (33).

8. The automobile seat according to claim 5, wherein 13. The automobile seat according to any one of claims 1 to 12, wherein the lifting framework assembly (30) further comprises a support pipe (34) supporting and connecting rear ends of the two side connecting plates (33).

14. The automobile seat according to any one of claims 1 to 13, wherein the lifting framework assembly (30) further comprises a hanging piece (60) hung on the support pipe (34).

9. The automobile seat according to claim 5, wherein 15. The automobile seat according to any one of claims 1 to 14, wherein the seat cushion framework assembly (10) further comprises a rear pipe (12) supported and connected to a rear end of the seat cushion side plate (11).

10. The automotive seat according to claim 9, wherein ​ 11. The automotive seat according to claim 1, wherein ​ The connecting rod (40) passes over the rear tube (12), and the end of the connecting rod (40) near the lifting frame assembly (30) is bent downward to be slidingly connected with the lifting frame assembly (30).

12. The automotive seat according to claim 1, wherein The vertical line of the rotation center of the back frame assembly (20) and the center line of the hinge point of the end of the connecting rod (40) form an angle (A), which changes with the forward or backward rotation of the back frame assembly (20).

13. The automotive seat according to claim 1, wherein The vertical line of the rotation center of the back frame assembly (20) and the center line of the hinge point of the end of the connecting rod (40) form an angle (A), which is greater in the flat position of the back frame assembly (20) than in the designed position of the back frame assembly (20).

14. The automotive seat according to claim 1, wherein The vertical line of the rotation center of the back frame assembly (20) and the center line of the hinge point of the end of the connecting rod (40) form an angle (A), which is substantially a right angle in the flat position of the back frame assembly (20).

15. The automotive seat of claim 1, wherein When the back frame assembly (20) rotates backward relative to the cushion side plate (11), the rear end (32) of the lifting frame assembly (30) is lifted by the connecting rod (40); when the back frame assembly (20) rotates forward relative to the cushion side plate (11), the rear end (32) of the lifting frame assembly (30) is lowered by the connecting rod (40).

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