A seat frame with a cushion foldable upward

Abstract

The utility model relates to the field of automobile seat, concretely relates to a seat framework that cushion can fold up. Including backrest framework assembly, seat frame framework assembly and slide rail assembly, the slide rail assembly is equipped with the sliding assembly on the sliding, and backrest framework assembly and seat frame framework assembly can respectively rotate around the transverse of its sliding direction on the sliding assembly, the slide rail assembly is equipped with horizontal motor assembly for driving the sliding assembly to move, the sliding assembly is equipped with backrest motor for driving backrest framework assembly to rotate, the sliding assembly is equipped with turnover motor for driving seat frame framework assembly to rotate. The utility model drives the cushion to turn over, backrest adjustment and lay flat, seat forward / backward movement through turnover motor, backrest motor and horizontal motor respectively, and realizes the storage and unfolding of backrest framework assembly and seat frame framework assembly through the cooperation of electric cushion lock and cushion cable, improves space utilization and operation intellectualization.

Description

Technical Field

[0001] This utility model relates to the field of automotive seats, specifically to a seat frame with an upwardly foldable seat cushion. Background Technology

[0002] In existing technologies, the third-row seats in MPV models generally suffer from limited functionality and low utilization. Most only offer manual adjustment or simple backrest folding, failing to flexibly adapt to diverse usage scenarios. Seat adjustments are cumbersome and laborious, lacking electrification and intelligent operation, hindering rapid space transformation. Furthermore, traditional seats often occupy extra space or disrupt the overall flatness when folded and stored, failing to balance passenger comfort with ample storage capacity. They also lack integrated functions such as upward folding of the seat cushion, automatic forward movement, and multi-mode combination transformations, failing to meet consumers' growing demands for flexibility, convenience, and versatility in rear passenger space.

[0003] A single chair with a folding function, currently disclosed in Chinese patent publication number CN220662322U, includes a seat frame. Connectors are fixedly installed on both sides of the seat frame, and an adjuster is installed inside each connector. A backrest frame is installed on the other side of the adjuster. A slide rail is slidably connected to the bottom of the seat frame, and a front support leg is fixedly installed on one bottom side of the seat frame. The front support leg is fixedly installed on one side of the bottom end of the slide rail. A hinge is fixedly installed on the inner bottom wall of the front support leg. A front foot plate is rotatably connected to the outside of the hinge. A limit rod is fixedly installed on one side of the front foot plate. A booster spring is sleeved on the outside of the hinge. A pin is rotatably connected to one side of the front support leg, and a pin hole is formed on one side of the front support leg.

[0004] According to the aforementioned patent, the seat supports fore-and-aft adjustment via sliding rails, backrest folding, and seat frame folding. Multi-directional adjustment and fixation are achieved through an adjuster, sliding rails, and a simple lock. When the seat frame folds, a spring reduces weight, and pins and hooks ensure a secure lock. This allows for flexible space transformation, enhancing passenger comfort and storage capacity, and making full use of the vehicle's interior space.

[0005] However, while the patented seat features sliding, backrest folding, and seat frame folding functions, its operation is cumbersome, requiring manual unlocking and strenuous folding. Furthermore, the folded structure protrudes, affecting the flatness of the space and hindering quick conversion to larger spaces. Therefore, there is a need for a seat frame with an automatically adjustable, foldable cushion that can be folded upwards with a single touch, automatically moving forward, or quickly flattening and automatically moving the backrest, among other intelligent modes, to improve ease of operation, space utilization, and overall aesthetics. Utility Model Content

[0006] To address the problems existing in the prior art, a seat frame with an upwardly foldable cushion is provided. The cushion is folded up, the backrest is flattened, and the seat is moved forward by a flip motor, a backrest motor, and a horizontal motor, respectively. The backrest frame assembly and the seat frame assembly can be stored and unfolded by the cooperation of an electric cushion lock and a cushion cable, thereby improving space utilization and intelligent operation.

[0007] To address the problems of existing technologies, this utility model provides a seat frame with an upwardly foldable cushion, including a backrest frame assembly, a seat frame assembly, and a slide rail assembly. A sliding component is slidably mounted on the slide rail assembly along its linear direction. Both the backrest frame assembly and the seat frame assembly are movably mounted on the sliding component. The backrest frame assembly and the seat frame assembly are respectively rotatable on the sliding component along their sliding direction. The seat frame assembly is located below the backrest frame assembly. One end of the backrest frame assembly and the seat frame assembly are respectively rotatably connected to the rear end of the sliding component. A horizontal motor assembly for driving the sliding component to move is mounted on the slide rail assembly. A backrest motor for driving the backrest frame assembly to rotate is mounted on the sliding component. A flip motor for driving the seat frame assembly to rotate is mounted on the sliding component.

[0008] Preferably, it also includes a seat lock support arm assembly, which includes an electric seat lock and a seat lock mounting bracket. The seat lock mounting bracket is located at the front end of the sliding component, the electric seat lock is located on the seat lock mounting bracket, and the free end of the seat frame assembly is provided with a seat bolt that cooperates with the electric seat lock.

[0009] Preferably, the seat lock mounting bracket is rotatable on the sliding assembly along its sliding direction, and a rotary shaft is rotatably provided between one end of the seat lock mounting bracket and the sliding assembly. The sliding assembly is provided with a rotary motor for driving the rotary shaft to rotate.

[0010] Preferably, a backrest drive shaft is fixedly provided on the backrest frame assembly and rotatably connected to the sliding component. The backrest drive shaft is connected to the backrest motor, and an electric angle adjuster is provided at the rotatable connection point between the backrest drive shaft and the sliding component.

[0011] Preferably, both sides of the seat frame assembly are provided with rotating shafts that are rotatably connected to the sliding component, one of the rotating shafts is connected to the flip motor, and each rotating shaft is provided with a toothed plate at the rotation connection point between the rotating component and the sliding component.

[0012] Preferably, the slide rail assembly consists of inner slide rails and outer slide rails that are parallel to each other. Upper slide rail assemblies are slidably mounted on the inner and outer slide rails respectively. A front horizontal tube is fixedly connected between the front ends of the two upper slide rail assemblies, and a rear horizontal tube is fixedly connected between the rear ends of the two upper slide rail assemblies. The front horizontal tube, the rear horizontal tube, and the two upper slide rail assemblies together constitute the sliding assembly.

[0013] Preferably, a seat lock support arm fixing bracket for hinged mounting bracket is fixed on the front cross tube.

[0014] Preferably, a bracket is fixed between each end of the rear cross tube and the corresponding upper slide rail assembly, and an adjuster lower connecting plate for hinged connection of the backrest frame assembly and the seat frame frame assembly is fixedly connected to each bracket.

[0015] The advantages of this application compared to the prior art are:

[0016] 1. This utility model achieves one-click folding and automatic unfolding of the seat through the coordinated operation of the slide rail assembly, sliding component and various motor assemblies.

[0017] In the first mode, the flip motor drives the seat frame assembly to fold upward, and the horizontal motor drives the sliding component to move forward.

[0018] In the second mode, the backrest motor drives the backrest frame assembly to lie flat forward, and the horizontal motor drives the sliding component to move forward, improving space utilization efficiency and ease of operation, and meeting diverse usage needs.

[0019] 2. This utility model uses a pull-wire motor to control the automatic unlocking and locking of the electric seat lock, and combines it with a rotary motor to drive the rotation of the seat lock mounting bracket, thereby achieving the synchronous folding and resetting of the seat lock support arm assembly.

[0020] When the seat frame assembly is folded upwards, the electric seat cushion lock unlocks in advance, while the seat cushion lock support arm assembly retracts downwards, improving space utilization. During unfolding, the seat cushion lock support arm assembly resets to ensure precise locking alignment, achieving fully automated operation and enhancing the intelligence of seat folding.

[0021] 3. This utility model uses a backrest motor to drive the backrest transmission shaft and works in conjunction with an electric angle adjuster to achieve smooth adjustment and reliable locking of the backrest frame assembly at any angle.

[0022] By using a rotating motor to drive the rotating shaft and toothed plate structure, the seat frame assembly can be automatically folded upwards and unfolded downwards, and rigidly positioned by the engagement of the toothed plates when in place. This improves the automation level of seat operation, structural reliability, and ease of use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a seat frame with an upwardly foldable cushion, according to this utility model. Figure 1 .

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a seat frame with an upwardly foldable cushion, according to this utility model. Figure 2 .

[0025] Figure 3 This is a side view of a seat frame with an upwardly foldable cushion, according to the present invention.

[0026] Figure 4 This is a schematic diagram of the seat frame assembly of a seat with an upwardly foldable cushion, as per the present invention, in its folded-up storage state.

[0027] Figure 5 This is a schematic diagram of the electric seat cushion lock of the seat frame of this utility model, which is folded downwards for storage.

[0028] Figure 6 This is a schematic diagram of the seat frame assembly of a seat with an upwardly foldable cushion, shown in the diagram, in the state where the slide rail assembly is slid to its foremost position. Figure 1 .

[0029] Figure 7 This is a schematic diagram of the backrest frame assembly of a seat frame with an upwardly foldable cushion, which is folded downwards for storage.

[0030] Figure 8 This is a schematic diagram of the seat frame assembly of a seat with an upwardly foldable cushion, shown in the diagram, in the state where the slide rail assembly is slid to its foremost position. Figure 2 .

[0031] The following are the labels in the diagram: 1. Backrest frame assembly; 11. Backrest motor; 111. Backrest drive shaft; 12. Electric seat adjuster; 2. Seat frame assembly; 21. Tilting motor; 211. Rotating shaft; 212. Tooth plate; 22. Seat cushion bolt; 3. Slide rail assembly; 31. Sliding component; 311. Upper slide rail assembly; 312. Front cross tube; 3121. Seat cushion lock support arm fixing bracket; 313. Rear cross tube; 3131. Bracket; 3132. Lower connecting plate of seat adjuster; 32. Horizontal motor assembly; 33. Inner slide rail; 34. Outer slide rail; 4. Seat cushion lock support arm assembly; 41. Electric seat cushion lock; 42. Seat cushion lock mounting bracket; 421. Rotating shaft. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0033] See Figures 1-3As shown, a seat frame with an upwardly foldable cushion is characterized by comprising a backrest frame assembly 1, a seat frame frame assembly 2, and a slide rail assembly 3. A sliding component 31 is slidably mounted on the slide rail assembly 3 along its linear direction. Both the backrest frame assembly 1 and the seat frame frame assembly 2 are movably mounted on the sliding component 31. The backrest frame assembly 1 and the seat frame frame assembly 2 are respectively rotatable on the sliding component 31 along their sliding direction. The seat frame frame assembly 2 is located below the backrest frame assembly 1. One end of the backrest frame assembly 1 and the seat frame frame assembly 2 are respectively rotatably connected to the rear end of the sliding component 31. A horizontal motor assembly 32 is provided on the slide rail assembly 3 to drive the sliding component 31 to move. A backrest motor 11 is provided on the sliding component 31 to drive the backrest frame assembly 1 to rotate. A flip motor 21 is provided on the sliding component 31 to drive the seat frame frame assembly 2 to rotate.

[0034] When the seat is folded or unfolded, the system automatically starts the corresponding electric drive process according to the mode selected by the user. The entire process is controlled by the motor assembly integrated on the seat frame, achieving an intelligent and one-button operation experience.

[0035] Specifically, the seat supports two main folding and unfolding modes: the first is the "seat cushion folds up + seat moves forward" mode, and the second is the "backrest flattens forward + seat moves forward" mode. Both modes are based on the linkage of the slide rail assembly 3, the sliding component 31 and each motor assembly.

[0036] The first folding and storage mode is activated: First, the flip motor 21 starts, outputting power to the seat frame assembly 2, causing it to rotate upwards around the rotational connection point with the rear end of the sliding component 31, thus automatically flipping and folding the seat cushion upwards. Simultaneously, the horizontal motor assembly 32 receives a control signal and begins operation, driving the sliding component 31 to slide forward along the linear direction of the slide rail assembly 3, gradually moving the entire seat to its forward position. During this process, the seat frame reaches a preset vertical or near-vertical storage posture. Throughout the folding action, the horizontal motor assembly 32 and the flip motor 21 work together to ensure that the seat's forward movement and the seat cushion's upward folding are synchronized, improving operational efficiency and optimizing space utilization.

[0037] When the sliding component 31 reaches its forward limit and the seat frame is fully flipped up, all motors automatically stop, completing the first storage mode. The unfolding process is completely reversed: when the user triggers the unfolding command, the flipping motor 21 runs in reverse, driving the seat frame assembly 2 to rotate downwards and reset to a horizontal sitting posture. At the same time, the horizontal motor assembly 32 drives the sliding component 31 to slide backwards, restoring the seat to its original set position, achieving one-button automatic unfolding.

[0038] The second folding and storage mode is activated: First, the backrest motor 11 starts, outputting power to drive the backrest frame assembly 1 to rotate forward and downward around its rotational connection point with the rear end of the sliding component 31, causing the backrest to gradually fold forward until it is basically parallel to the horizontal plane, forming a flat loading surface. During this process, the seat frame assembly 2 remains fixed and does not participate in the rotation, existing only as a support base. At the same time, the horizontal motor assembly 32 starts, driving the sliding component 31 to slide forward along the slide rail assembly 3, moving the entire seat to its forwardmost position, thereby maximizing the usable space in the trunk.

[0039] Once the backrest is fully reclined and the seat is in position, the backrest motor 11 and the horizontal motor assembly 32 stop working, completing the second storage mode. The unfolding process is also a reverse operation: the backrest motor 11 drives in the opposite direction, causing the backrest frame assembly 1 to rotate upwards and reset to the normal seating angle, while the horizontal motor assembly 32 drives the sliding component 31 to slide backwards, restoring the seat to its initial position, achieving one-button automatic unfolding.

[0040] See Figure 1 and Figures 3-8 As shown, it also includes a seat lock support arm assembly 4, which includes an electric seat lock 41 and a seat lock mounting bracket 42. The seat lock mounting bracket 42 is located at the front end of the sliding component 31, and the electric seat lock 41 is located on the seat lock mounting bracket 42. The free end of the seat frame assembly 2 is provided with a seat bolt 22 that cooperates with the electric seat lock 41.

[0041] The electric seat lock 41 is controlled by a pull cable to lock or unlock the seat bolt 22.

[0042] When the seat frame assembly 2 needs to be folded upwards, the electric seat lock 41 is automatically unlocked by pulling the cable driven by the cable motor. The cable motor is not shown in the figure.

[0043] When the seat frame assembly 2 needs to be folded upwards, the system first activates the cable motor. The cable motor generates linear power output by pulling the cable, one end of which is connected to the cable motor, and the other end is connected to the electric seat lock 41. As the cable is pulled, the locking structure inside the electric seat lock 41 is triggered and released, thereby releasing the locking state of the seat anchor 22 at the free end of the seat frame assembly 2, achieving automatic unlocking. At this time, the constraint on the front end of the seat frame assembly 2 is released, providing conditions for the subsequent upward flipping movement.

[0044] When the folding process is completed and the unfolding process begins, the seat frame assembly 2 rotates downward and resets under the drive of the flip motor 21. When the seat cable bolt 22 at its free end is aligned with the locking port of the electric seat lock 41, the cable retracts under the reverse traction, and the electric seat lock 41 automatically returns to the locked position, relocking the seat cable bolt 22 and ensuring the structural stability and safety of the seat frame in the riding state.

[0045] See Figure 1 and Figures 3-8 As shown, the seat lock mounting bracket 42 can rotate on the sliding component 31 along its sliding direction. One end of the seat lock mounting bracket 42 is rotatably provided with a rotary shaft 421 between it and the sliding component 31. The sliding component 31 is provided with a rotary motor for driving the rotary shaft 421 to rotate.

[0046] The rotary motor is not shown in the figure.

[0047] After the seat frame is folded upwards, the rotary motor starts and outputs power, driving the rotary shaft 421 to rotate around its axis. This causes the seat lock mounting bracket 42 to rotate downwards around the rotary shaft 421 on the sliding assembly 31 along its sliding direction. This causes the seat lock support arm assembly 4 to automatically fold downwards for storage.

[0048] During the downward unfolding and resetting process of the seat frame, the rotary motor drives the rotary shaft 421 in the reverse direction, causing the seat lock mounting bracket 42 to rotate in the reverse direction to the initial position, ensuring that the electric seat lock 41 and the seat bolt 22 are precisely aligned, creating conditions for locking.

[0049] See Figure 1 and Figures 3-8 As shown, a backrest drive shaft 111 is fixedly provided on the backrest frame assembly 1 and is rotatably connected to the sliding component 31. The backrest drive shaft 111 is connected to the backrest motor 11. An electric angle adjuster 12 is provided at the rotation connection point between the backrest drive shaft 111 and the sliding component 31.

[0050] When it is necessary to adjust the angle of the backrest frame assembly 1 or to perform folding or unfolding actions, the backrest motor 11 starts and outputs power to the backrest drive shaft 111. The backrest drive shaft 111 rotates, causing the backrest frame assembly 1 to rotate relative to the sliding component 31. During the rotation, the electric angle adjuster 12 controls the resistance and angle position of the rotation, so as to achieve stable stopping or continuous adjustment of the backrest frame at any preset angle.

[0051] See Figure 1 and Figures 3-8 As shown, both sides of the seat frame assembly 2 are provided with rotating shafts 211 that are rotatably connected to the sliding component 31. One of the rotating shafts 211 is connected to the flip motor 21. Each rotating shaft 211 is provided with a toothed plate 212 at the rotation connection point between it and the sliding component 31.

[0052] When the seat frame assembly 2 needs to be folded upwards or unfolded downwards, the flip motor 21 starts and outputs power to the rotating shaft 211 connected to it, causing the seat frame assembly 2 to rotate relative to the sliding component 31 around the axis of the rotating shaft 211. When the seat frame is flipped upwards to the storage position, the toothed plate 212 rotates synchronously with the rotating shaft 211 to a preset angle and remains locked, providing structural support.

[0053] During the downward unfolding and resetting process, the flip motor 21 rotates in the opposite direction, driving the rotating shaft 211 to rotate in the opposite direction. The toothed plate 212 rotates in the opposite direction accordingly, guiding the seat frame frame to smoothly reset to a horizontal sitting posture. After it is in place, it achieves rigid positioning through the meshing of the toothed plate 212, ensuring the stability and safety of the seat frame frame assembly 2 in the use state.

[0054] See Figure 1 and Figures 3-8 As shown, the slide rail assembly 3 consists of an inner slide rail 33 and an outer slide rail 34 that are parallel to each other. Upper slide rail assemblies 311 are slidably mounted on the inner slide rail 33 and the outer slide rail 34 respectively. A front horizontal tube 312 is fixedly connected between the front ends of the two upper slide rail assemblies 311, and a rear horizontal tube 313 is fixedly connected between the rear ends of the two upper slide rail assemblies 311. The front horizontal tube 312, the rear horizontal tube 313 and the two upper slide rail assemblies 311 together constitute the sliding assembly 31.

[0055] When the seat is adjusted forward and backward or folded for storage, the inner slide rail 33 and outer slide rail 34 in the slide rail assembly 3 remain parallel to each other and fixed to the vehicle floor, serving as a guide structure. The two upper slide rail assemblies 311 slide synchronously along the straight line of the inner slide rail 33 and outer slide rail 34, realizing the overall forward and backward movement of the seat. Throughout the process, the movement of the sliding assembly 31 remains smooth, providing a stable moving basis for the electric adjustment and folding functions of the seat.

[0056] See Figure 1 and Figures 3-8 As shown, a seat lock support arm fixing bracket 3121 for hinged connection of seat lock mounting bracket 42 is fixed on the front cross tube 312.

[0057] The seat lock support arm fixing bracket 3121 set on the front cross tube 312 serves as a fixed fulcrum and is used to hinge the seat lock mounting bracket 42 to form a rotatable hinge structure.

[0058] When the rotary motor drives the rotary shaft 421 to rotate, the seat lock mounting bracket 42 rotates around the hinge point on the sliding assembly 31, realizing the swinging motion of the electric seat lock 41. The seat lock support arm fixing bracket 3121 stably mounts the seat lock mounting bracket 42 on the front cross tube 312, ensuring its structural rigidity and positional accuracy during rotation, and providing a reliable installation foundation for the automatic unlocking and alignment of the electric seat lock 41.

[0059] See Figure 1 and Figures 3-8 As shown, a bracket 3131 is fixed between each end of the rear horizontal tube 313 and the corresponding upper slide rail assembly 311. Each bracket 3131 is fixedly connected to an angle adjuster lower connecting plate 3132 for hinged connection between the backrest frame assembly 1 and the seat frame frame assembly 2.

[0060] Both ends of the rear horizontal tube 313 are fixedly connected to the corresponding upper slide rail assembly 311 via brackets 3131. Each bracket 3131 serves as a structural connector, firmly connecting the rear horizontal tube 313 to the upper slide rail assembly 311, thereby enhancing the overall rigidity and stability of the sliding assembly 31. A lower connecting plate 3132 of the angle adjuster is further fixedly connected to each bracket 3131, serving as a hinge support for the backrest frame assembly 1 and the seat frame frame assembly 2.

[0061] The smooth rotation during flipping or adjustment ensures a reliable connection between the backrest frame assembly 1, the seat frame assembly 2, and the sliding component 31, providing stable mechanical support for backrest angle adjustment, seat cushion folding, and other actions.

[0062] This invention achieves one-button automatic folding and unfolding of the seat in multiple modes through the coordinated operation of various motor assemblies and transmission structures. The backrest motor 11, in conjunction with the electric angle adjuster 12, enables stepless adjustment and reliable locking of the backrest frame assembly 1. The rotating shaft 211 and toothed plate 212, driven by the flip motor 21, achieve automatic flipping and rigid positioning of the seat frame assembly 2. The sliding component 31, driven by the horizontal motor, enables the overall forward and backward movement of the seat.

[0063] Simultaneously, the automatic unlocking of the electric seat cushion lock 41 and the synchronous retraction and reset of the seat cushion lock support arm assembly 4 are achieved through the linkage of the pull-wire motor and the rotary motor. This improves the intelligence, safety, and space utilization efficiency of the seat operation.

[0064] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the appended claims.

Claims

1. A seat frame with an upwardly foldable cushion, characterized in that, This includes the backrest frame assembly, seat frame frame assembly, and slide rail assembly; A sliding component is provided on the slide rail assembly along its linear direction; Both the backrest frame assembly and the seat frame frame assembly are hinged to the sliding assembly. The backrest frame assembly and the seat frame frame assembly are respectively able to rotate laterally on the sliding assembly about their sliding direction. The seat frame frame assembly is located below the backrest frame assembly. One end of the backrest frame assembly and the seat frame frame assembly are respectively rotatably connected to the rear end of the sliding assembly. The slide rail assembly is equipped with a horizontal motor assembly for driving the sliding component to move; The sliding assembly is equipped with a backrest motor for driving the backrest frame assembly to rotate; The sliding assembly is equipped with a flip motor for driving the seat frame assembly to rotate.

2. The seat frame with an upwardly foldable cushion according to claim 1, characterized in that, It also includes a seat lock support arm assembly, which includes an electric seat lock and a seat lock mounting bracket. The seat lock mounting bracket is located at the front end of the sliding component, the electric seat lock is located on the seat lock mounting bracket, and the free end of the seat frame assembly is provided with a seat bolt that cooperates with the electric seat lock.

3. A seat frame with an upwardly foldable cushion according to claim 2, characterized in that, The seat lock mounting bracket is capable of lateral rotation on the sliding component about its sliding direction. One end of the seat lock mounting bracket is provided with a rotary shaft between itself and the sliding component. The sliding component is provided with a rotary motor for driving the rotary shaft to rotate.

4. A seat frame with an upwardly foldable cushion according to claim 1, characterized in that, The backrest frame assembly is fixedly provided with a backrest drive shaft that is rotatably connected to the sliding component. The backrest drive shaft is connected to the backrest motor. An electric angle adjuster is provided at the rotation connection point between the backrest drive shaft and the sliding component.

5. A seat frame with an upwardly foldable cushion according to claim 1, characterized in that, Both sides of the seat frame assembly are provided with rotating shafts that are rotatably connected to the sliding component. One of the rotating shafts is connected to the flip motor. Each rotating shaft is provided with a toothed plate at the rotation connection point between it and the sliding component.

6. A seat frame with an upwardly foldable cushion according to claim 3, characterized in that, The slide rail assembly consists of inner and outer slide rails that are parallel to each other. Upper slide rail assemblies are slidably mounted on the inner and outer slide rails respectively. A front horizontal tube is fixedly connected between the front ends of the two upper slide rail assemblies, and a rear horizontal tube is fixedly connected between the rear ends of the two upper slide rail assemblies. The front horizontal tube, the rear horizontal tube, and the two upper slide rail assemblies together constitute the sliding assembly.

7. A seat frame with an upwardly foldable cushion according to claim 6, characterized in that, A seat lock support arm fixing bracket is fixed on the front cross tube for hinged mounting bracket of seat lock.

8. A seat frame with an upwardly foldable cushion according to claim 6, characterized in that, Each end of the rear horizontal tube is fixedly connected to a bracket between the corresponding upper slide rail assembly and a lower connecting plate of the angle adjuster for hinged connection between the backrest frame assembly and the seat frame frame assembly.

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