Two-row seat framework assembly convenient for passengers to quickly get in and out

Abstract

The utility model discloses a two-row seat framework assembly convenient for passengers to quickly get in and out, synchronous unlocking of an angle adjuster assembly and a ground lock mechanism can be realized by pulling an inhaul cable mechanism, a backrest assembly can be forwards overturned to a front limit position relative to a cushion assembly after unlocking, and at the moment, the backrest assembly continues to be forwards overturned, so that the passengers can quickly get in and out of the two-row seat framework assembly. The sliding locking mechanism can drive the cushion assembly to turn upwards relative to the sliding rail assembly so that the rear end of the cushion assembly can be lifted, a maintaining mechanism is arranged between the cushion assembly and the sliding rail assembly, when the rear end of the cushion assembly is lifted to a designed position, the maintaining mechanism can automatically achieve lifting maintaining of the cushion assembly, and the sliding locking mechanism is further provided with an unlocking support. In the lifting process of the rear end of the seat cushion assembly, the seat cushion assembly can drive the unlocking support to move, so that unlocking of the sliding locking mechanism is achieved, and the seat cushion assembly and the backrest assembly can move forwards through the sliding rail assembly after unlocking. The receding operation process can be simplified, the structural complexity and cost are reduced, and passengers can conveniently and quickly enter and exit the third row of seats.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a second-row seat frame assembly that facilitates quick entry and exit for passengers. Background Technology

[0002] In today's rapidly developing automotive industry, consumers have increasingly higher demands for the efficiency of interior space utilization and the ease of passenger access. Especially in multi-seat vehicles, the design of the second-row seats plays a crucial role in the ease of access for passengers entering and exiting the third row. Traditional second-row seat frame assemblies have many shortcomings in meeting passenger access needs and are ill-suited to the efficiency and convenience requirements of modern automotive use. Traditional second-row seat frame assemblies typically employ a complex, step-by-step operation to allow passengers to enter and exit the third row. Some seats use a two-step method: first, the backrest is unlocked and flipped forward, then the slide rail is unlocked, allowing the seat to slide forward as a whole. Others use a three-step method, adding a seat cushion lifting step to the two-step method: first, the backrest is unlocked and flipped forward, then the seat cushion is lifted, and finally the slide rail is unlocked, allowing the entire seat to slide forward. However, these traditional methods primarily rely on a four-bar linkage to lift the seat cushion.

[0003] While the application of a four-bar linkage in traditional second-row seat frames can achieve seat cushion lifting to some extent, it has several significant drawbacks. From a structural complexity perspective, the four-bar linkage consists of multiple links and hinges, resulting in a large number of parts and a complex layout. This not only increases the overall weight of the seat frame assembly but also poses challenges to seat installation and maintenance. From a cost perspective, the numerous parts and complex structure of the four-bar linkage lead to relatively high manufacturing and assembly costs, undoubtedly increasing vehicle production costs and potentially impacting the vehicle's market competitiveness. More importantly, the traditional four-bar linkage lacks an effective linkage mechanism between the seat cushion lifting and backrest folding actions. When making way, the backrest unlocking, seat cushion lifting, and slide rail unlocking must be performed separately, resulting in slow adjustment speeds and hindering a quick and smooth transition, severely impacting the convenience of passengers entering and exiting the third-row seats. In today's fast-paced lifestyle, consumers have higher expectations for the convenience and efficiency of car use, and the shortcomings of traditional second-row seat frames in terms of seating operation are no longer sufficient to meet market demands. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention aims to provide a second-row seat frame assembly that facilitates quick entry and exit for passengers, thereby simplifying the process of making way, reducing structural complexity and cost, and facilitating quick entry and exit for passengers in the third row of seats.

[0005] To achieve the above objectives, this utility model proposes a second-row seat frame assembly that facilitates quick passenger entry and exit, including a backrest assembly, a seat cushion assembly, and a slide rail assembly. The backrest assembly and the seat cushion assembly are rotatably connected via an adjuster assembly. The seat cushion assembly and the slide rail assembly are fixedly connected via a floor lock mechanism. The slide rail assembly is equipped with a sliding locking mechanism. The front end of the seat cushion assembly is rotatably connected to the slide rail assembly. The adjuster assembly and the floor lock mechanism are connected to the same cable mechanism. Pulling the cable mechanism enables synchronous unlocking of the adjuster assembly and the floor lock mechanism. After unlocking, the backrest assembly can be positioned relative to the seat cushion assembly. The backrest assembly flips forward to its maximum position. At this point, the backrest assembly continues to flip forward, causing the seat cushion assembly to flip upward relative to the slide rail assembly, thereby raising the rear end of the seat cushion assembly. A retaining mechanism is provided between the seat cushion assembly and the slide rail assembly. When the rear end of the seat cushion assembly is raised to the designed position, the retaining mechanism can automatically maintain the raised seat cushion assembly. The sliding locking mechanism is also equipped with an unlocking bracket. During the rear end raising process of the seat cushion assembly, the seat cushion assembly can drive the unlocking bracket to move, thereby unlocking the sliding locking mechanism. After unlocking, the seat cushion assembly and the backrest assembly can move forward through the slide rail assembly.

[0006] In the above solution: when the rear end of the seat assembly is raised to the designed position, the sliding locking mechanism unlocks precisely, and the seat assembly remains in a raised and held state after unlocking. That is, by precisely controlling the lifting height of the seat assembly and the unlocking timing of the sliding locking mechanism, it is ensured that the seat assembly remains in a raised and held state throughout the forward movement process.

[0007] In the above solution: the retaining mechanism includes a limiting block rotatably connected to the slide rail assembly and a first limiting pin disposed on the seat cushion assembly. A tension spring is provided between the limiting block and the slide rail assembly, and the tension spring has an elastic force to drive the limiting block to reset clockwise. The slide rail assembly is provided with a limiting post for limiting the clockwise rotation of the limiting block. The limiting block is provided with a rearward-opening slot. During the lifting of the rear end of the seat cushion assembly, the first limiting pin can squeeze the limiting block, causing it to rotate counterclockwise and lift. When the first limiting pin passes the corresponding part of the limiting block, the limiting block can reset under the action of the tension spring. The first limiting pin can be engaged in the slot to prevent the seat cushion assembly from falling, thereby realizing the lifting and holding of the seat cushion assembly. The retaining mechanism achieves its function through simple components such as the limiting block, the first limiting pin, the tension spring, and the limiting post, and has a compact structure that is easy to manufacture and maintain. When passengers adjust their seat position, they only need to perform a simple lifting operation, and the holding mechanism will automatically complete the lifting and holding function without any extra steps. This design makes seat adjustment more convenient and improves the passenger's user experience.

[0008] In the above solution: a leaf spring is provided between the seat cushion assembly and the slide rail assembly. When the seat cushion assembly is in its initial state, the leaf spring is compressed, and it has an elastic force that drives the seat cushion assembly to flip upward. This means that when it is necessary to lift the seat cushion assembly, the elastic force of the leaf spring will provide some assistance, reducing the external force required by the passenger or operator, making the lifting operation easier and less strenuous. The leaf spring also has a certain lifting and holding function. The elastic force of the leaf spring and the holding mechanism work together to prevent the seat cushion assembly from falling accidentally.

[0009] In the above solution: the slide rail assembly includes two slide rail components, each equipped with a sliding locking mechanism, and each sliding locking mechanism is equipped with an unlocking bracket. The middle of the two unlocking brackets is rotatably connected to the corresponding side slide rail component. The seat cushion assembly is also provided with a second limiting pin at the front end of one of the unlocking brackets. The second limiting pin is connected to the front end of the unlocking bracket. The two unlocking brackets are connected by a synchronizing rod, and the rear ends of the two unlocking brackets correspond to the positions of the corresponding side sliding locking mechanisms. During the lifting of the rear end of the seat cushion assembly, the seat cushion assembly can drive the corresponding unlocking bracket to rotate counterclockwise, thereby driving the front ends of the two unlocking brackets to press down the locking pin of the corresponding side sliding locking mechanism, thereby realizing the synchronous unlocking of the two sliding locking mechanisms.

[0010] There is no need to unlock each sliding locking mechanism individually, reducing the number of actions required by passengers or operators and making seat adjustments quicker and more convenient.

[0011] In the above scheme: the lower end of the limiting block is rotatably connected to an auxiliary block via a rotating shaft. The auxiliary block abuts against the limiting block in a counterclockwise direction. A coil spring is provided between the auxiliary block and the limiting block. When the auxiliary block rotates clockwise, the coil spring has the torque to drive the auxiliary block to reset in a counterclockwise direction. The front end of the slide rail assembly is provided with an abutment post corresponding to the auxiliary block. During the process of the seat cushion assembly moving from front to back, the abutment post can contact the auxiliary block forward and squeeze to drive the auxiliary block to rotate counterclockwise around the rotating shaft, thereby driving the limiting block to rotate counterclockwise, so as to realize that the first limiting pin is disengaged from the slot, thereby realizing the seat cushion assembly falling back to its original position. When the auxiliary block passes the abutment post, the limiting block can return to its original position under the action of the tension spring, thereby driving the auxiliary block to return to its original position.

[0012] During the process of the seat cushion assembly moving from front to back, the contact and compression between the abutment post and the auxiliary block can automatically trigger the rotation of the auxiliary block and the limiting block, thereby enabling the first limiting pin to disengage from the slot and allowing the seat cushion assembly to automatically fall back into place. This design reduces the need for manual operation and improves the automation level of seat adjustment.

[0013] It is worth noting that during the forward movement of the seat assembly, the abutment post can contact the auxiliary block rearward and squeeze it to drive it to rotate clockwise around the pivot until the auxiliary block passes the abutment post. After passing the abutment post, the auxiliary block can return to its original position under the action of the coil spring. That is, the auxiliary block will not interfere with the limiting block during the forward movement of the seat assembly.

[0014] In the above solution: the cable mechanism includes an unlocking lever and a cable; both the angle adjuster assembly and the floor lock mechanism are connected to the unlocking lever via the cable; the unlocking lever is installed at the top of the backrest assembly. The unlocking lever's installation at the top of the backrest assembly provides passengers with a centralized and easily accessible operating point.

[0015] The beneficial effects of this utility model are as follows: 1. By using the same cable mechanism to achieve synchronous unlocking of the angle adjuster assembly and the floor lock mechanism, the backrest assembly can then flip forward, causing the seat cushion assembly to flip upward. Furthermore, during the lifting of the rear end of the seat cushion assembly, the unlocking bracket is automatically moved, unlocking the sliding locking mechanism. This makes the entire seating process seamless and greatly simplifies the operation. Due to the reduction in operating steps and the implementation of the linkage mechanism, passengers can complete the seat seating operation more quickly, thus quickly entering and exiting the third row of seats, saving time and improving entry and exit efficiency, especially suitable for scenarios requiring rapid entry and exit. 2. By using the backrest assembly to drive the seat cushion assembly to flip and lift, a complex four-bar linkage structure is eliminated, reducing the number of parts and simplifying the overall structure of the seat, thus reducing the difficulty of manufacturing and assembly. 3. The retaining mechanism between the seat cushion assembly and the slide rail assembly can automatically lift and hold the seat cushion assembly when the rear end of the seat cushion assembly is raised to the designed position, preventing the seat cushion assembly from falling. This design ensures the stability of the seat in the yielding state, avoids possible injury to passengers due to the accidental fall of the seat cushion assembly, and improves the safety of seat use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention in its initial position.

[0017] Figure 2 yes Figure 1 Side view.

[0018] Figure 3 This is a schematic diagram of the seat cushion assembly after it has been raised.

[0019] Figure 4 This is a schematic diagram of the seat cushion assembly after it has been raised and moved forward.

[0020] Figure 5 This is a structural schematic diagram of the slide rail assembly.

[0021] Figure 6 This is a schematic diagram of the mechanism.

[0022] Figure 7yes Figure 6 A diagram from another angle. Detailed Implementation

[0023] like Figure 1 As shown in Figure 7, a second-row seat frame assembly that facilitates quick entry and exit for passengers mainly consists of a backrest assembly 1, a seat cushion assembly 2, and a slide rail assembly 3.

[0024] The backrest assembly 1 and the seat cushion assembly 2 are rotatably connected by the angle adjuster assembly 4. The seat cushion assembly 2 and the slide rail assembly 3 are fixedly connected by the floor lock mechanism 5. The slide rail assembly 3 is equipped with a sliding locking mechanism 7.

[0025] The front end of the seat cushion assembly 2 is rotatably connected to the slide rail assembly 3. The angle adjuster assembly 4 and the floor lock mechanism 5 are connected by the same cable mechanism 6. Pulling the cable mechanism 6 can synchronously unlock the angle adjuster assembly 4 and the floor lock mechanism 5. After unlocking, the backrest assembly 1 can flip forward relative to the seat cushion assembly 2 to the front limit position (specifically, the backrest assembly 1 can flip forward 20-30° from the design position to the front limit position). At this time, the backrest assembly 1 continues to flip forward, which can drive the seat cushion assembly 2 to rotate together, so that the seat cushion assembly 2 flips upward relative to the slide rail assembly 3, thereby raising the rear end of the seat cushion assembly 2. A retaining mechanism is provided between the seat cushion assembly 2 and the slide rail assembly 3. When the rear end of the seat cushion assembly 2 is raised to the design position, the retaining mechanism can automatically keep the seat cushion assembly 2 raised.

[0026] The sliding locking mechanism 7 is also equipped with an unlocking bracket 8. During the lifting of the rear end of the seat cushion assembly 2, the seat cushion assembly 2 can drive the unlocking bracket 8 to move, thereby unlocking the sliding locking mechanism 7. After unlocking, the seat cushion assembly 2 and the backrest assembly 1 can move forward through the slide rail assembly 3.

[0027] Ideally, the sliding locking mechanism 7 should unlock precisely when the rear end of the seat cushion assembly 2 is raised to the designed position, and the seat cushion assembly 2 should remain in the raised and held state after unlocking. That is, by precisely controlling the lifting height of the seat cushion assembly 2 and the unlocking timing of the sliding locking mechanism 7, it is ensured that the seat cushion assembly 2 remains in the raised and held state throughout the forward movement.

[0028] Preferably, the retaining mechanism includes a limiting block 9 rotatably connected to the slide rail assembly 3 and a first limiting pin 10 disposed on the seat cushion assembly 2. A tension spring 12 is provided between the limiting block 9 and the slide rail assembly 3. The tension spring 12 has an elastic force to drive the limiting block 9 to reset clockwise. The slide rail assembly 3 is provided with a limiting post 11 for limiting the clockwise rotation of the limiting block 9. The limiting block 9 is provided with a slot 91 with an opening facing backward. During the lifting process of the rear end of the seat cushion assembly 2, the first limiting pin 10 can squeeze the limiting block 9, causing it to rotate counterclockwise and lift. When the first limiting pin 10 passes the corresponding part of the limiting block 9, the limiting block 9 can reset under the action of the tension spring 12. The first limiting pin 10 can be locked into the slot 91 to prevent the seat cushion assembly 2 from falling, thereby realizing the lifting and holding of the seat cushion assembly 2. The retaining mechanism functions using simple components such as the limiting block 9, the first limiting pin 10, the tension spring 12, and the limiting post 11. Its compact structure makes it easy to manufacture and maintain. When adjusting the seat position, passengers only need to perform a simple lifting operation, and the retaining mechanism automatically completes the lifting and holding function without any additional steps. This design makes seat adjustment more convenient and improves the passenger's user experience.

[0029] Ideally, a leaf spring 13 is provided between the seat cushion assembly 2 and the slide rail assembly 3. When the seat cushion assembly 2 is in its initial state, the leaf spring 13 is compressed, and it has an elastic force that drives the seat cushion assembly 2 to flip upward. This means that when it is necessary to lift the seat cushion assembly 2, the elastic force of the leaf spring 13 will provide some assistance, reducing the external force required by the passenger or operator, making the lifting operation easier and less strenuous. The leaf spring 13 also has a certain lifting and holding function. The elastic force of the leaf spring 13 and the holding mechanism work together to prevent the seat cushion assembly 2 from falling accidentally.

[0030] Preferably, the slide rail assembly 3 includes two slide rail components, each equipped with a sliding locking mechanism 7, and each sliding locking mechanism 7 equipped with an unlocking bracket 8. The middle of the two unlocking brackets 8 is rotatably connected to the corresponding side slide rail component. The seat cushion assembly 2 is also provided with a second limiting pin 14 corresponding to the front end of one of the unlocking brackets 8. The second limiting pin 14 is connected to the front end of the unlocking bracket 8. The two unlocking brackets 8 are connected by a synchronizing rod 17, and the rear ends of the two unlocking brackets 8 are respectively positioned with the corresponding side sliding locking mechanism 7. During the rear end lifting process of the seat cushion assembly 2, the seat cushion assembly 2 can drive the corresponding unlocking bracket 8 to rotate counterclockwise, thereby driving the front ends of the two unlocking brackets 8 to press down the locking pin of the corresponding side sliding locking mechanism 7, thereby realizing the synchronous unlocking of the two sliding locking mechanisms 7.

[0031] There is no need to unlock each sliding locking mechanism 7 individually, reducing the number of actions required by passengers or operators and making seat adjustment quicker and more convenient.

[0032] Ideally, the lower end of the limiting block 9 is rotatably connected to an auxiliary block 15 via a rotating shaft. The auxiliary block 15 abuts against the limiting block 9 in a counterclockwise direction. A coil spring is provided between the auxiliary block 15 and the limiting block 9. When the auxiliary block 15 rotates clockwise, the coil spring has the torque to drive the auxiliary block 15 to reset in a counterclockwise direction. The front end of the slide rail assembly 3 is provided with an abutment post 16 corresponding to the auxiliary block 15. During the movement of the seat cushion assembly 2 from front to back, the abutment post 16 can contact the auxiliary block 15 forward and squeeze to drive the auxiliary block 15 to rotate counterclockwise around the rotating shaft, thereby driving the limiting block 9 to rotate counterclockwise, so as to realize that the first limiting pin 10 is disengaged from the slot 91, thereby realizing the lowering and return of the seat cushion assembly 2. When the auxiliary block 15 passes the abutment post 16, the limiting block 9 can return to its original position under the action of the tension spring 12, thereby driving the auxiliary block 15 to return to its original position.

[0033] During the process of the seat cushion assembly 2 moving from front to back, the contact and compression between the abutment post 16 and the auxiliary block 15 can automatically trigger the rotation of the auxiliary block 15 and the limiting block 9, thereby enabling the first limiting pin 10 to disengage from the slot 91 and causing the seat cushion assembly 2 to automatically fall back into place. This design reduces the need for manual operation and improves the automation level of seat adjustment.

[0034] It is worth noting that during the forward movement of the seat cushion assembly 2, the abutment post 16 can contact the auxiliary block 15 from the rear and squeeze it to drive it to rotate clockwise around the pivot until the auxiliary block 15 passes the abutment post 16. After passing the abutment post 16, the auxiliary block 15 can return to its original position under the action of the coil spring. That is, the auxiliary block 15 will not interfere with the limiting block 9 during the forward movement of the seat cushion assembly 2.

[0035] Preferably, the cable mechanism 6 includes an unlocking paddle and a cable, and both the angle adjuster assembly 4 and the floor lock mechanism 5 are connected to the unlocking paddle via the cable. The unlocking paddle is mounted at the top of the backrest assembly 1. The unlocking paddle, mounted at the top of the backrest assembly 1, provides passengers with a centralized and easily accessible operating point.

Claims

1. A second-row seat frame assembly for convenient passenger quick entry and exit, comprising a backrest assembly (1), a seat cushion assembly (2), and a slide rail assembly (3), wherein the backrest assembly (1) and the seat cushion assembly (2) are rotatably connected via an adjuster assembly (4), and the seat cushion assembly (2) and the slide rail assembly (3) are fixedly connected via a floor lock mechanism (5), and the slide rail assembly (3) is equipped with a sliding locking mechanism (7), characterized in that: The front end of the seat cushion assembly (2) is rotationally connected with the slide rail assembly (3), the angle adjuster assembly (4) and the ground lock mechanism (5) are connected with the same cable mechanism (6), pulling the cable mechanism (6) can realize the synchronous unlocking of the angle adjuster assembly (4) and the ground lock mechanism (5), after unlocking, the backrest assembly (1) can be flipped forward to the front limit position relative to the seat cushion assembly (2), at this time, the backrest assembly (1) continues to flip forward, which can drive the seat cushion assembly (2) to flip upward relative to the slide rail assembly (3), thereby realizing the lifting of the rear end of the seat cushion assembly (2), the seat cushion assembly (2) and the slide rail assembly (3) are provided with a retaining mechanism, when the rear end of the seat cushion assembly (2) is lifted to the designed position, the retaining mechanism can automatically realize the lifting and retention of the seat cushion assembly (2), the slide lock mechanism (7) is also provided with an unlocking bracket (8), during the lifting of the rear end of the seat cushion assembly (2), the seat cushion assembly (2) can drive the unlocking bracket (8) to move, thereby realizing the unlocking of the slide lock mechanism (7), after unlocking, the seat cushion assembly (2) and the backrest assembly (1) can move forward through the slide rail assembly (3).

2. The two-row seat assembly of claim 1, wherein: When the rear end of the seat cushion assembly (2) is lifted to the designed position, the slide lock mechanism (7) is just unlocked, and after unlocking, the seat cushion assembly (2) is in a lifted and retained state.

3. The two-row seat assembly of claim 1, wherein: The retaining mechanism includes a limiting block (9) rotationally connected to the slide rail assembly (3) and a first limiting pin (10) provided on the seat cushion assembly (2), the limiting block (9) and the slide rail assembly (3) are provided with a tension spring (12), the tension spring (12) has a restoring force for driving the limiting block (9) to rotate clockwise, and the slide rail assembly (3) is provided with a limiting column (11) for limiting the clockwise rotation of the limiting block (9), the limiting block (9) is provided with a clamping groove (91) with a rear opening, during the lifting of the rear end of the seat cushion assembly (2), the first limiting pin (10) can press the limiting block (9) to rotate counterclockwise and lift, when the first limiting pin (10) passes the corresponding part of the limiting block (9), the limiting block (9) can be reset under the action of the tension spring (12), and the first limiting pin (10) can be clamped in the clamping groove (91) to prevent the seat cushion assembly (2) from falling, thereby realizing the lifting and retention of the seat cushion assembly (2).

4. The two-row seat assembly of claim 3, wherein: The seat cushion assembly (2) and the slide rail assembly (3) are provided with a leaf spring (13), when the seat cushion assembly (2) is in the initial state, the leaf spring (13) is in a compressed state, and has a restoring force for driving the seat cushion assembly (2) to flip upward.

5. The two-row seat assembly of claim 1, wherein: The slide rail assembly (3) comprises two slide rail components, each of which is equipped with a slide locking mechanism (7), and each of the slide locking mechanisms (7) is equipped with an unlocking bracket (8), the middle part of each of the unlocking brackets (8) is rotationally connected to the corresponding slide rail component, the front end of the seat cushion assembly (2) corresponding to one of the unlocking brackets (8) is further provided with a second limiting pin (14), the second limiting pin (14) is connected to the front end of the unlocking bracket (8), the two unlocking brackets (8) are connected through a synchronous rod (17), and the rear end of each of the unlocking brackets (8) corresponds to the position of the corresponding slide locking mechanism (7), during the lifting of the rear end of the seat cushion assembly (2), the seat cushion assembly (2) can drive the corresponding unlocking bracket (8) to rotate counterclockwise, thereby driving the front end of the two unlocking brackets (8) to press down the locking pin of the corresponding slide locking mechanism (7), and the synchronous unlocking of the two slide locking mechanisms (7) is realized.

6. The two-row seat assembly of claim 3, wherein: The lower end of the limiting block (9) is rotationally connected with an auxiliary block (15) through a rotating shaft, the auxiliary block (15) abuts against the limiting block (9) in the counterclockwise direction, a coil spring is arranged between the auxiliary block (15) and the limiting block (9), when the auxiliary block (15) rotates clockwise, the coil spring has a torsion force for driving the auxiliary block (15) to reset in the counterclockwise direction, and the front end of the slide rail assembly (3) is provided with an abutting column (16) corresponding to the auxiliary block (15), during the movement of the seat cushion assembly (2) from front to back, the abutting column (16) can contact the auxiliary block (15) from front and press the auxiliary block (15) to rotate counterclockwise around the rotating shaft, thereby driving the limiting block (9) to rotate counterclockwise, so as to realize the disengagement of the first limiting pin (10) from the clamping groove (91), and the falling reset of the seat cushion assembly (2) is realized, when the auxiliary block (15) passes the abutting column (16), the limiting block (9) can reset under the action of the tension spring (12), thereby driving the auxiliary block (15) to reset.

7. The two-row seat assembly of claim 1, wherein: The cable mechanism (6) comprises an unlocking tab and a cable, the angle adjuster assembly (4) and the ground lock mechanism (5) are connected with the unlocking tab through the cable, and the unlocking tab is installed at the top end of the backrest assembly (1).

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