Middle-row seat lifting keeping and resetting structure

Abstract

The invention provides a middle-row seat lifting keeping and resetting structure which comprises a seat framework and a sliding rail assembly, the sliding rail assembly comprises an inner sliding rail and an outer sliding rail, the front end of the bottom of the seat framework is hinged to the inner sliding rail, a front rotating shaft connecting rod is arranged at the front end of the bottom of the seat framework, a locking hook assembly is arranged on the inner sliding rail, and the locking hook assembly is arranged on the outer sliding rail. A lifting keeping and releasing mechanism is arranged between the inner sliding rail and the outer sliding rail, when the seat framework is lifted upwards around the front end hinge point, the front rotating shaft connecting rod can be driven to be clamped into the locking hook assembly, and lifting keeping of the seat framework is achieved. When the seat framework moves forwards, the seat framework can be kept in a lifting state all the time; when the seat framework moves backwards to return, the lifting keeping and releasing mechanism can be driven to move, so that lifting keeping and releasing of the seat framework are achieved, and at the moment, the seat framework is pressed downwards, and resetting of the seat framework can be achieved. According to the invention, the use requirements of the middle-row seat in a comity function scene can be met, and the flexibility and convenience of the seat use are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle seats, and particularly to a middle row seat lifting, holding and resetting structure. Background Art

[0002] With the continuous development of the automotive industry, people have put forward higher requirements for the functionality and comfort of vehicle seats. In multi-seat vehicles such as MPVs (Multi-Purpose Vehicles) and some SUVs (Sports Utility Vehicles), the middle row seats often need to have a yielding function to facilitate passengers' access to the third row seats or other spaces in the vehicle. The yielding function usually requires that the middle row seats can be lifted upward by a certain angle around the front hinge point after unlocking, and automatically maintain the lifted state during the forward movement. After the passengers pass through, the seats can automatically release the lifted state and reset to restore the normal sitting posture.

[0003] However, the existing middle row seat structures have many deficiencies in realizing the above-mentioned yielding function. Specifically, after unlocking the floor lock and lifting around the front hinge point, the existing seat structures lack an effective lifting and holding mechanism, resulting in the seats being prone to falling due to external forces or their own gravity during the lifting process, and unable to stably maintain the lifted state, which brings inconvenience to the passengers' passage. In addition, when the seats move forward to provide a larger passage space, the existing structures often cannot ensure that the seats always maintain the lifted state during the entire forward movement, further affecting the implementation effect of the yielding function. More critically, after the passengers pass through, the existing seat structures also lack a mechanism for automatically releasing the lifted state during the reset process, and the passengers need to manually release it. This operation not only increases the usage complexity but may also cause damage to the seats or other components in the vehicle due to improper operation. Therefore, the existing middle row seat structures have obvious functional defects and operational inconveniences in realizing the yielding function. Summary of the Invention

[0004] Aiming at the deficiencies existing in the above-mentioned prior art, the present invention aims to provide a middle row seat lifting, holding and resetting structure to realize the functions of automatically holding the seat after lifting, continuously holding the lifted state during the forward movement, and automatically releasing the lifted and held state when moving backward to the original position, thereby improving the convenience of passengers getting on and off the vehicle.

[0005] To achieve the above object, the present invention aims to provide a middle row seat lifting, holding and resetting structure, which includes a seat frame and a slide rail assembly. The slide rail assembly includes an inner slide rail and an outer slide rail, and a sliding locking mechanism is provided between the two. The front end of the bottom of the seat frame is hinged to the inner slide rail, and the rear end of the bottom of the seat frame is locked and fixed to the inner slide rail through a floor lock. A front pivot connecting rod is provided at the front end of the bottom of the seat frame, and a locking hook assembly is provided on the inner slide rail corresponding to the front pivot connecting rod. A lifting, holding and releasing mechanism is provided between the inner slide rail and the outer slide rail. When the floor lock is unlocked and the rear end of the seat frame rotates upward around the hinge point of its front end and the inner slide rail, it can drive the front pivot connecting rod to be caught in the locking hook assembly, thereby realizing the lifting and holding of the seat frame. When the sliding locking mechanism is unlocked and the seat frame moves forward, the seat frame can always maintain the lifted state. When the seat frame moves backward and returns to its position, it can drive the lifting, holding and releasing mechanism to move, thereby driving the separation of the front pivot connecting rod and the locking hook assembly, and then realizing the release of the lifting and holding of the seat frame. At this time, pressing down the seat frame can realize the reset of the seat frame.

[0006] In the above solution: the slide rail assembly includes two groups of symmetrically arranged inner slide rails and outer slide rails. Slide rail front brackets are provided on both sides of the inner slide rails. A front pivot is provided at the front end of the bottom of the seat frame, and the front pivot is hinged between the two slide rail front brackets, thereby realizing the hinge connection between the front end of the bottom of the seat frame and the inner slide rail. The hinge design of the front pivot allows the front end of the seat frame to be directly adjusted with the inner slide rail as the rotation center, which is suitable for scenarios that require frequent adjustment of the seat posture.

[0007] In the above solution: the middle part of the locking hook assembly is hinged to one of the slide rail front brackets through a locking hook assembly rotating shaft. A spring fixing pin is provided on this slide rail front bracket. A positioning spring is provided between the spring fixing pin and the locking hook assembly. The positioning spring is located below the locking hook assembly rotating shaft and has an elastic force to drive the locking hook assembly to rotate counterclockwise. Under this elastic force, the counterclockwise side of the locking hook assembly abuts against the spring fixing pin, thereby fixing the locking hook assembly in the designed position. A locking edge and a return pin are also provided on the locking hook assembly. The front pivot connecting rod is in an inverted U shape, its top end is fixed to the front pivot, and a linkage pin is provided at the lower end of one side corresponding to the locking edge, and a locking mechanism return contact edge is provided at the lower end of the other side corresponding to the return pin. When the seat frame is lifted upward, it can drive the front pivot connecting rod to rotate counterclockwise, thereby driving the linkage pin to be caught in the locking edge, and then realizing the lifting and holding of the seat frame. This locking hook assembly design realizes the stable holding position of the seat frame after lifting through mechanical locking, and has the advantages of compact structure, convenient maintenance, high reliability, etc.

[0008] In the above solution: the lifting and holding release mechanism includes a one-way arm and a quick-in-and-out stop pin. The upper end of the one-way arm is hinged to the lower end of the locking hook assembly through a one-way arm rotating shaft, and a one-way arm torsion spring is provided between the one-way arm and the locking hook assembly. The one-way arm torsion spring has a torsion force to drive the one-way arm to maintain its designed position. The quick-in-and-out stop pin is fixed on the outer wall at the front end of the outer slide rail. When the sliding locking mechanism is unlocked and the seat frame moves forward, the one-way arm can abut against the quick-in-and-out stop pin and is pushed by it to rotate counterclockwise until it passes over the quick-in-and-out stop pin. The one-way arm after passing over the quick-in-and-out stop pin can return to its designed position under the action of the one-way arm torsion spring. A stop point is provided on the locking hook assembly. The one-way arm abuts against the stop point on the clockwise side. When the seat frame moves backward and returns to its original position, it can drive the one-way arm to push the locking hook assembly to rotate clockwise, realizing the separation of the linkage pin and the locking edge, and further realizing the release of the lifting and holding of the seat frame. At this time, the positioning tension spring is located below the rotating shaft of the locking hook assembly, and it has an elastic force to drive the locking hook assembly to rotate clockwise. Under this elastic force, the clockwise side of the locking hook assembly abuts against the tension spring fixing pin, so that the locking hook assembly is fixed in the open position. And at this time, pressing down the seat frame can realize the reset of the seat frame. When the seat frame is reset downward, it can drive the front rotating shaft connecting rod to rotate clockwise, thereby driving the return contact edge of the locking mechanism to push the return pin to move downward, and further realizing the return of the locking hook assembly from the open position to its designed position.

[0009] That is, during the process of the return contact edge of the locking mechanism pushing the return pin downward, it can make the positioning tension spring cross the axis of the rotating shaft of the locking hook assembly to change the direction of the elastic force of the positioning tension spring, so as to pull the locking hook assembly back to the designed position through the elastic force.

[0010] In short, when the seat frame moves forward and then returns, it can automatically trigger unlocking without manual operation, improving the user experience. Moreover, when pressing down the seat frame, through the linkage of the front rotating shaft connecting rod and the return pin, the automatic reset of the locking hook assembly is realized, further simplifying the operation steps. It should be noted that when the self-weight of the seat frame is sufficient to drive the seat frame to reset, the downward pressure applied to the seat frame can be omitted. After the seat frame is reset, the floor lock locks to fix the seat frame.

[0011] The tension spring fixing pin has a dual function. It not only plays the role of fixing the positioning tension spring, but also serves as a limit point for the locking hook assembly to maintain its designed position and open position, eliminating the need for an additional limiting structure and simplifying the mechanical design.

[0012] In the above solution: one end of the positioning tension spring is hooked and fixed on the tension spring fixing pin, and the other end is hooked and fixed on the return pin of the locking hook assembly. The structure is simple and the assembly is convenient, which is beneficial to reducing the number of components.

[0013] In the above solution: The quick access stop pin is fixed to the outer slide rail through a mounting bracket. The mounting bracket fits against the outer surface of the outer slide rail and is snap-connected to the outer slide rail by a snap structure. The quick access stop pin is fixed to the mounting bracket. This structure makes the quick access stop pin easy to disassemble and assemble, facilitating subsequent maintenance and replacement.

[0014] In the above solution: The rotating shaft connecting rod, the locking hook assembly, the one-way arm, and the quick access stop pin are evenly arranged on one side of the front slide rail bracket close to the inside of the seat, thus being hidden under the seat frame, making full use of the idle space under the seat, avoiding the occupation of other areas in the vehicle by components, and avoiding the influence of the exposed structure on the overall appearance of the seat, making the seat appearance more concise and smooth.

[0015] The beneficial effects of the present invention are:

[0016] 1. It can meet the usage requirements of the middle row seat in the courtesy function scenario. Through a series of operations such as unlocking with the floor lock, lifting the seat around the front hinge point, and moving forward while maintaining the lifted state, it greatly facilitates the passage of passengers, solves the problem that the existing middle row seat structure is difficult to achieve this function, and improves the flexibility and convenience of seat use. 2. During the forward movement of the seat, through the cooperation of the front rotating shaft connecting rod and the locking hook assembly, the seat can always maintain the lifted state, ensuring the stability and safety of the seat during movement, and avoiding the inconvenience or potential danger caused to passengers due to seat shaking or accidental lowering. 3. When the seat moves backward and returns to its original position, it can automatically drive the lifting holding release mechanism to move, separating the front rotating shaft connecting rod from the locking hook assembly, realizing the release of the seat lifting holding, facilitating passengers to press down the seat to make it fall back to its original position without additional manual operation, further improving the convenience of seat use and the user experience. 4. This structure cleverly utilizes the mutual cooperation among components such as the seat frame, the slide rail assembly, the front rotating shaft connecting rod, the locking hook assembly, and the lifting holding release mechanism to realize the lifting holding and reset functions of the seat. The components work together in a coordinated manner, with a compact and reasonable structure, effectively utilizing the internal space of the seat and reducing the impact on the overall vehicle layout. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present invention.

[0018] Figure 2 is the partial structural schematic diagram of the present invention.

[0019] Figure 3 is Figure 2 the enlarged schematic diagram at M in

[0020] Figure 4 is the schematic diagram of the seat frame in the designed state.

[0021] Figure 5 It is a schematic diagram when the seat frame is in the lifted state and has not moved forward.

[0022] Figure 6 It is a schematic diagram after the seat frame is in the lifted state and has moved forward. Specific implementation mode

[0023] Such as Figure 1 As shown in Fig. - 6, a lifting, holding and resetting structure for a middle row seat mainly consists of a seat frame A and a slide rail assembly. The slide rail assembly includes an inner slide rail B and an outer slide rail C which are slidably connected, and a sliding locking mechanism is provided between them. The front end of the bottom of the seat frame A is hinged to the inner slide rail B, and the rear end of the bottom of the seat frame A is locked and fixed to the inner slide rail B through a floor lock.

[0024] A front rotating shaft connecting rod 1 is provided at the front end of the bottom of the seat frame A, a locking hook assembly 2 is provided on the inner slide rail B corresponding to the front rotating shaft connecting rod 1, and a lifting holding release mechanism D is provided between the inner slide rail B and the outer slide rail C.

[0025] When the floor lock is unlocked and the rear end of the seat frame A rotates upward around the hinge point of its front end and the inner slide rail B, it can drive the front rotating shaft connecting rod 1 to be caught in the locking hook assembly 2, thereby realizing the lifting and holding of the seat frame A. When the sliding locking mechanism is unlocked and the seat frame A moves forward, the seat frame A can always maintain the lifted state. When the seat frame A moves backward to return to its position, it can drive the lifting holding release mechanism D to move, thereby driving the separation of the front rotating shaft connecting rod 1 and the locking hook assembly 2, and further realizing the release of the lifting and holding of the seat frame A. At this time, pressing down the seat frame A can realize the reset of the seat frame A, that is, return to the designed position.

[0026] Preferably, the slide rail assembly includes two groups of inner slide rails B and outer slide rails C arranged symmetrically. Slide rail front brackets 7 are provided on both sides of the inner slide rails B. A front rotating shaft 11 is provided at the front end of the bottom of the seat frame A, and the front rotating shaft 11 is hinged between the two slide rail front brackets 7, thereby realizing the hinge connection between the front end of the bottom of the seat frame A and the inner slide rail B. The hinge design of the front rotating shaft 11 allows the front end of the seat frame A to be directly adjusted with the inner slide rail B as the rotation center, which is suitable for scenarios where the seat posture needs to be frequently adjusted.

[0027] Preferably, the middle of the locking hook assembly 2 is hinged to one of the slide rail front brackets 7 through a locking hook assembly rotating shaft 22. A tension spring fixing pin 8 is provided on this slide rail front bracket 7. A positioning tension spring 3 is provided between the tension spring fixing pin 8 and the locking hook assembly 2. The positioning tension spring 3 is located below the locking hook assembly rotating shaft 22, and it has an elastic force to drive the locking hook assembly 2 to rotate counterclockwise. Under this elastic force, the counterclockwise side of the locking hook assembly 2 abuts against the tension spring fixing pin 8, thereby fixing the locking hook assembly 2 in the designed position.

[0028] The locking hook assembly 2 is also provided with a locking edge 21 and a return pin 23. The front rotating shaft connecting rod 1 is in an inverted U shape, with its top fixed on the front rotating shaft 11. A linkage pin 12 is provided at the lower end of one side corresponding to the locking edge 21, and a locking mechanism return contact edge 13 is provided at the lower end of the other side corresponding to the return pin 23.

[0029] When the seat frame A is lifted upward, it can drive the front rotating shaft connecting rod 1 to rotate counterclockwise, thereby driving the linkage pin 12 to snap into the locking edge 21, and further realizing the lifting and holding of the seat frame A. The design of this locking hook assembly 2 realizes the stable holding position of the seat frame A after lifting through mechanical locking, and has the advantages of compact structure, convenient maintenance, and high reliability.

[0030] Preferably, the lifting and holding release mechanism D includes a one-way arm 5 and a quick-in-and-out stop pin 6. The upper end of the one-way arm 5 is hinged to the lower end of the locking hook assembly 2 through a one-way arm rotating shaft 24, and a one-way arm torsion spring 4 is provided between the one-way arm 5 and the locking hook assembly 2. The one-way arm torsion spring 4 has a torsion force to drive the one-way arm 5 to remain in the designed position. The quick-in-and-out stop pin 6 is fixed on the outer wall of the front end of the outer slide rail C.

[0031] When the sliding locking mechanism is unlocked and the seat frame A moves forward, the one-way arm 5 can abut against the quick-in-and-out stop pin 6 and be pushed by it to rotate counterclockwise until it passes over the quick-in-and-out stop pin 6. After passing over the quick-in-and-out stop pin 6, the one-way arm 5 can return to the designed position under the action of the one-way arm torsion spring 4.

[0032] A stop point 25 is provided on the locking hook assembly 2. The one-way arm 5 abuts against the stop point 25 on the clockwise side. When the seat frame A moves backward to return to its position, it can drive the one-way arm 5 to push the locking hook assembly 2 to rotate clockwise, realizing the separation of the linkage pin 12 from the locking edge 21, and further realizing the release of the lifting and holding of the seat frame A. At this time, the positioning tension spring 3 is located below the locking hook assembly rotating shaft 22, and it has an elastic force to drive the locking hook assembly 2 to rotate clockwise. Under this elastic force, the clockwise side of the locking hook assembly 2 abuts against the tension spring fixing pin 8, so that the locking hook assembly 2 is fixed in the open position. And when the seat frame A is pressed downward at this time, the reset of the seat frame A can be realized. When the seat frame A is reset downward, it can drive the front rotating shaft connecting rod 1 to rotate clockwise, thereby driving the locking mechanism return contact edge 13 to push the return pin 23 to move downward, and further realizing the return of the locking hook assembly 2 from the open position to the designed position.

[0033] That is, during the process of the locking mechanism return contact edge 13 pushing the return pin 23 downward, it can make the positioning tension spring 3 cross the axis of the locking hook assembly rotating shaft 22 (move from above the locking hook assembly rotating shaft 22 to below it), so as to change the elastic force direction of the positioning tension spring 3, and pull the locking hook assembly 2 back and fix it to the designed position through the elastic force of the positioning tension spring 3.

[0034] In summary, when the seat frame A moves forward and then returns to its original position, unlocking is automatically triggered without manual operation, enhancing the user experience. Moreover, when the seat frame A is pressed down, through the linkage of the front rotating shaft connecting rod 1 and the return pin 23, automatic reset of the locking hook assembly 2 is achieved, further simplifying the operation steps. It should be noted that when the self-weight of the seat frame A is sufficient to drive the seat frame A to reset, the downward pressure applied to the seat frame A can be omitted. After the seat frame A resets, the floor lock is locked to fix the seat frame A.

[0035] The tension spring fixing pin 8 has a dual function. It not only fixes and positions the tension spring 3 but also serves as a limit point for keeping the locking hook assembly 2 in the designed position and the open position, eliminating the need for an additional limiting structure (such as an independent stop block) and simplifying the mechanical design.

[0036] Preferably, one end of the positioning tension spring 3 is hooked and fixed to the tension spring fixing pin 8, and the other end is hooked and fixed to the return pin 23 of the locking hook assembly 2. The structure is simple and convenient for assembly, which is beneficial to reducing the number of components.

[0037] Preferably, the quick access stop pin 6 is fixed to the outer slide rail C through the mounting bracket 61. The mounting bracket 61 fits on the outer surface of the outer slide rail C and is snap-connected to the outer slide rail C through a snap structure. The quick access stop pin 6 is fixed to the mounting bracket 61. This structure makes the quick access stop pin 6 easy to disassemble and assemble, facilitating subsequent maintenance and replacement.

[0038] Preferably, the rotating shaft connecting rod 1, the locking hook assembly 2, the one-way arm 5, and the quick access stop pin 6 are evenly arranged on the side of the slide rail front bracket 7 close to the interior of the seat, thus being hidden under the seat frame A, making full use of the idle space under the seat, avoiding the occupation of other areas in the vehicle by the components, and avoiding the impact of the exposed structure on the overall appearance of the seat, making the seat appearance more concise and smooth.

Claims

1. A middle-row seat lifting, holding and resetting structure, comprising a seat frame (A) and a slide rail assembly. The slide rail assembly includes an inner slide rail (B) and an outer slide rail (C), and a sliding locking mechanism is provided between the two. The front end of the bottom of the seat frame (A) is hinged to the inner slide rail (B), and the rear end of the bottom of the seat frame (A) is locked and fixed to the inner slide rail (B) through a floor lock. It is characterized in that: A front pivot connecting rod (1) is provided at the front end of the bottom of the seat frame (A). A locking hook assembly (2) is provided on the inner slide rail (B) corresponding to the front pivot connecting rod (1). A lifting, holding and releasing mechanism (D) is provided between the inner slide rail (B) and the outer slide rail (C). When the floor lock is unlocked and the seat frame (A) is lifted upward around the hinge point of its front end and the inner slide rail (B), it can drive the front pivot connecting rod (1) to be caught in the locking hook assembly (2), so as to realize the lifting and holding of the seat frame (A). When the sliding locking mechanism is unlocked and the seat frame (A) moves forward, the seat frame (A) can always maintain the lifted state. When the seat frame (A) moves backward and returns to its original position, it can drive the lifting, holding and releasing mechanism (D) to move, so as to drive the front pivot connecting rod (1) to separate from the locking hook assembly (2), and further realize the release of the lifting and holding of the seat frame (A). At this time, pressing down the seat frame (A) can realize the reset of the seat frame (A).

2. The middle row seat lifting, holding and resetting structure according to claim 1, characterized in that: The slide rail assembly includes two groups of symmetrically arranged inner slide rails (B) and outer slide rails (C). Slide rail front brackets (7) are provided on both sides of the inner slide rails (B). A front pivot (11) is provided at the front end of the bottom of the seat frame (A). The front pivot (11) is hinged between the two slide rail front brackets (7), so as to realize the hinge connection between the front end of the bottom of the seat frame (A) and the inner slide rail (B).

3. The middle row seat lifting, holding and resetting structure according to claim 2, characterized in that: The middle part of the locking hook assembly (2) is hinged to one side of the slide rail front bracket (7) through a locking hook assembly rotating shaft (22). A tension spring fixing pin (8) is provided on the slide rail front bracket (7). A positioning tension spring (3) is provided between the tension spring fixing pin (8) and the locking hook assembly (2). The positioning tension spring (3) is located below the locking hook assembly rotating shaft (22), and it has an elastic force to drive the locking hook assembly (2) to rotate counterclockwise. Under this elastic force, the counterclockwise side of the locking hook assembly (2) abuts against the tension spring fixing pin (8), so as to fix the locking hook assembly (2) at the designed position. A locking edge (21) and a return pin (23) are also provided on the locking hook assembly (2). The front pivot connecting rod (1) is in an inverted U shape, its top end is fixed on the front pivot (11), a linkage pin (12) is provided at the lower end of one side corresponding to the locking edge (21), and a locking mechanism return contact edge (13) is provided at the lower end of the other side corresponding to the return pin (23). When the seat frame (A) is lifted upward, it can drive the front pivot connecting rod (1) to rotate counterclockwise, so as to drive the linkage pin (12) to be caught in the locking edge (21), and further realize the lifting and holding of the seat frame (A).

4. The middle row seat lifting, holding and resetting structure according to claim 3, characterized in that: The lifting and holding release mechanism (D) includes a one-way arm (5) and a quick-in-and-out stop pin (6). The upper end of the one-way arm (5) is hinged to the lower end of the locking hook assembly (2) through a one-way arm rotating shaft (24), and a one-way arm torsion spring (4) is provided between the one-way arm (5) and the locking hook assembly (2). The one-way arm torsion spring (4) has a torsion force to drive the one-way arm (5) to stay in the designed position. The quick-in-and-out stop pin (6) is fixed on the outer wall of the front end of the outer slide rail (C). When the sliding locking mechanism is unlocked and the seat frame (A) moves forward, the one-way arm (5) can abut against the quick-in-and-out stop pin (6) and is pushed by it to rotate counterclockwise until it passes over the quick-in-and-out stop pin (6). The one-way arm (5) after passing over the quick-in-and-out stop pin (6) can return to the designed position under the action of the one-way arm torsion spring (4). A stop point (25) is provided on the locking hook assembly (2). The one-way arm (5) abuts against the stop point (25) on the clockwise side. When the seat frame (A) moves backward and returns to its position, it can drive the one-way arm (5) to push the locking hook assembly (2) to rotate clockwise, realizing the separation of the linkage pin (12) from the locking edge (21), and further realizing the release of the lifting and holding of the seat frame (A). At this time, the positioning tension spring (3) is located below the locking hook assembly rotating shaft (22), and it has an elastic force to drive the locking hook assembly (2) to rotate clockwise. Under this elastic force, the clockwise side of the locking hook assembly (2) abuts against the tension spring fixing pin (8), so that the locking hook assembly (2) is fixed in the open position. And at this time, pressing down the seat frame (A) can realize the reset of the seat frame (A). When the seat frame (A) is reset downward, it can drive the front rotating shaft connecting rod (1) to rotate clockwise, thereby driving the locking mechanism return contact edge (13) to push the return pin (23) to move downward, and further realizing the return of the locking hook assembly (2) from the open position to the designed position.

5. The middle row seat lifting, holding and resetting structure according to claim 3, characterized in that: One end of the positioning tension spring (3) is hooked and fixed on the tension spring fixing pin (8), and the other end is hooked and fixed on the return pin (23) of the locking hook assembly (2).

6. The middle row seat lifting, holding and resetting structure according to claim 4, characterized in that: The quick-in-and-out stop pin (6) is fixed on the outer slide rail (C) through a mounting bracket (61). The mounting bracket (61) fits on the outer surface of the outer slide rail (C) and is clamped on the outer slide rail (C) through a snap structure. The quick-in-and-out stop pin (6) is fixed on the mounting bracket (61).

7. The middle row seat lifting, holding and resetting structure according to claim 6, characterized in that: The rotating shaft connecting rod (1), the locking hook assembly (2), the one-way arm (5) and the quick-in-and-out stop pin (6) are evenly arranged on one side of the slide rail front bracket (7) close to the inside of the seat, so as to be hidden under the seat frame (A).

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