Multifunctional vehicle seat

Abstract

The utility model belongs to the technical field of vehicle seats, and particularly relates to a multifunctional vehicle seat which comprises a base, a cushion support, a cushion framework, a first chair back framework and a second chair back framework, and the cushion support is arranged on the base in a front-back sliding mode; the cushion framework is arranged on the cushion bracket through a third angle adjuster; the first chair back framework is arranged on the base through the first angle adjuster, the first chair back framework can be unfolded forwards, and when the first chair back framework is unfolded forwards, the cushion support slides forwards to give way to the first chair back framework; the second chair back framework is arranged on the base through a second angle adjuster, and the second chair back framework can be unfolded backwards; the first chair back framework and the second chair back framework are arranged in parallel front and back. According to the multifunctional vehicle seat, the seat state is a normal state; in the chair state, the second chair back framework can be laid flat backwards to serve as a multifunctional table board; when the bed is in a bed state, the cushion framework moves forwards and turns over to give way to the first chair back framework, so that the length of the bed is greatly increased, and the lying experience of a user is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats, and in particular relates to a multifunctional vehicle seat. Background Art

[0002] With the development of society and technology, people have higher and higher requirements for vehicle seats, and a single seat function can no longer meet the needs of users. In order to meet the needs of users, existing vehicle seats are designed to be multifunctional vehicle seats with various morphological changes. For example, patent application No. 202021397523.1 discloses a seat structure and a car. Existing vehicle seats have the following defects: 1. The length of the bed formed by the seats is insufficient, the user's rest is restricted, and the experience is poor; 2. In order to be able to be assembled into a bed, the seat's recliner has a large angle adjustment range, and the positioning strength of the recliner is limited, which makes the overall strength of the seat insufficient and poses a safety hazard. There is still a lot of room for improvement in the multifunctional application of vehicle seats to enhance the user experience and optimize the application market of vehicle seats. Utility Model Content

[0003] In order to solve the problems of limitation of the folding bed and insufficient strength of vehicle seats in the prior art, the utility model provides a multifunctional vehicle seat.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a multifunctional vehicle seat, characterized in that: it includes:

[0005] Pedestal;

[0006] A seat cushion bracket, the seat cushion bracket being slidably arranged on the base forward and backward;

[0007] A seat cushion frame, wherein the seat cushion frame is arranged on the seat cushion bracket through a third angle adjuster;

[0008] A first seat back frame, the first seat back frame is arranged on the base through a first angle adjuster, the first seat back frame can be unfolded forward, and when the first seat back frame is unfolded forward, the seat cushion bracket slides forward to make way for the first seat back frame;

[0009] and a second chair back frame, wherein the second chair back frame is arranged on the base through a second angle adjuster, and the second chair back frame can be unfolded backward; the first chair back frame and the second chair back frame are arranged in parallel front and back.

[0010] Preferably, the multifunctional vehicle seat further comprises a safety belt, which is arranged across the second seat back frame and the first seat back frame. That is, the safety belt is jointly supported by the first angle adjuster and the second angle adjuster, which greatly increases the safety performance of the safety belt. Moreover, the first angle adjuster and the second angle adjuster with smaller support can be selected, so that the safety belt can obtain higher safety performance and greatly reduce the cost.

[0011] Preferably, the seat cushion bracket is slidably arranged on the base forward and backward through a slide rail structure, the slide rail structure includes a slide rail seat and a sliding plate that cooperate with each other, the slide rail seat is arranged on the base, the sliding plate is connected to the seat cushion bracket, and the slide rail structure also includes a locking structure, the locking structure is used to lock the sliding plate. The slide rail structure is simple and reliable, and is convenient for the sliding arrangement of the seat cushion bracket.

[0012] Furthermore, the locking structure includes a toothed locking tongue and an operating rod, the slide rail seat is provided with a toothed locking groove, the operating rod is provided on the sliding plate, the toothed locking tongue is provided on the operating rod, and when the toothed locking tongue is inserted into the toothed locking groove, the sliding plate is locked relative to the slide rail seat. The locking structure is simple and reliable, easy to operate, and low in cost.

[0013] Preferably, the first recliners are provided at both the left and right ends of the first chair back frame, and the two first recliners are linked by a first unlocking structure, the first unlocking structure includes a first unlocking handle and two first zippers, one end of the two first zippers are connected to the first unlocking handle, and the other ends of the two first zippers are respectively connected to the corresponding two first recliners; the second recliners are provided at both the left and right ends of the second chair back frame, and the two second recliners are linked by a second unlocking structure, the second unlocking structure includes a second unlocking handle and two second zippers, one end of the two second zippers are connected to the second unlocking handle, and the other ends of the two second zippers are respectively connected to the corresponding two second recliners. Both the first unlocking structure and the second unlocking structure can use existing unlocking structures, which are simple and reliable in structure and low in cost.

[0014] Furthermore, an adjustment knob is provided on the left or right side of the base, and the adjustment knob is connected to the first unlocking handle through a third zipper, and the adjustment knob is connected to the second unlocking handle through a fourth zipper. That is, the adjustment knob controls the first angle adjuster and the second angle adjuster at the same time, so as to realize the linkage adjustment of the first chair back frame and the second chair back frame.

[0015] Furthermore, the first unlocking structure further includes a first pull member, which is arranged above the first seat back frame and connected to the first unlocking handle via a fifth zipper; the second unlocking structure further includes a second pull member, which is arranged above the second seat back frame and connected to the second unlocking handle via a sixth zipper. That is, the first pull member controls the first angle adjuster to achieve the separate adjustment of the first seat back frame, and the second pull member controls the second angle adjuster to achieve the separate adjustment of the second seat back frame, so that the adjustment between the seat state and the bed state of the multifunctional vehicle seat is very convenient and reliable.

[0016] Preferably, the first seat back frame is provided with a first limit plate, and the base is provided with a first limit stroke matching the first limit plate; the second seat back frame is provided with a second limit plate, and the base is provided with a second limit stroke matching the second limit plate; the seat cushion frame is provided with a third limit plate, and the seat cushion bracket is provided with a third limit stroke matching the third limit plate. Each limit stroke assists each recliner, greatly improving the load-bearing capacity of the multifunctional vehicle seat in an extreme state, such as the load-bearing capacity in a bed state.

[0017] Furthermore, the seat cushion frame is tilted downward at a certain angle α from front to back, which effectively prevents the user from sliding forward from the seat cushion frame, is more ergonomic, and improves the user's comfort.

[0018] Preferably, the base is slidably arranged on the vehicle floor, that is, the multifunctional vehicle seat is slidably arranged on the vehicle floor, and its sliding structure can be selected from existing seat sliding structures to facilitate the movement of the overall position of the multifunctional vehicle seat.

[0019] Preferably, the seat cushion frame is configured as a double seat cushion frame, the first chair back frame is also a double first chair back frame, and the second chair back frame is also a double second chair back frame.

[0020] Beneficial effects:

[0021] 1. The multifunctional vehicle seat of the utility model is in the seat state: the first seat back frame and the second seat back frame are arranged side by side in the vertical direction. At this time, the inclination angle of the second seat back frame can be adjusted by the second recliner, and the inclination angle of the first seat back frame can be adjusted by the first recliner at the same time to adapt to the user's sitting posture, greatly improving the user's good experience; at this time, the first recliner and the second recliner bear the force together, which greatly increases the safety performance, and the first recliner and the second recliner with smaller force can be selected to obtain higher safety performance and greatly reduce costs;

[0022] 2. The multifunctional vehicle seat of the utility model can be folded back by the second recliner, and the second back frame can be laid flat to be used as a multifunctional table, or the second back frame can be extended into the trunk to be used as a multifunctional table, which can be used to place items and can also be used as a seat, so as to better meet various needs of outdoor activities;

[0023] 3. The multifunctional vehicle seat of the utility model pulls the cushion frame and the cushion bracket forward until the cushion frame gives way to the first seat back frame, then unlocks the third recliner, and flips the cushion frame forward to make the cushion frame give way to the first seat back frame, then the first recliner is used to fold the first seat back frame forward, and the second recliner is used to fold the second seat back frame forward and backward to complete the adjustment from the seat state to the bed state. The length of the bed state of the multifunctional vehicle seat is greatly increased, which improves the user's good lying experience;

[0024] 4. The multifunctional vehicle seat of the utility model has a simple and ingenious structure, reliable and stable overall strength, convenient operation, low cost, and is suitable for a variety of usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the utility model multifunctional vehicle seat when it is in a seat state;

[0027] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0028] Figure 3 yes Figure 2 A is a partial enlarged schematic diagram;

[0029] Figure 4 yes Figure 2 A partial enlarged schematic diagram of B in the middle;

[0030] Figure 5 It is a three-dimensional structural schematic diagram of another angle when the utility model multifunctional vehicle seat is in a seat state;

[0031] Figure 6 yes Figure 5 Schematic diagram of the internal structure;

[0032] Figure 7 yes Figure 6 A partial enlarged schematic diagram of C in the middle;

[0033] Figure 8 It is a three-dimensional structural schematic diagram of the slide rail structure of the multifunctional vehicle seat of the utility model;

[0034] Fig. 9 It is a cross-sectional schematic diagram of the slide rail structure of the multifunctional vehicle seat of the utility model;

[0035] Fig.10 It is a three-dimensional structural schematic diagram of the utility model multifunctional vehicle seat in a seat state with the second seat back frame laid flat;

[0036] Fig.11 yes Fig.10 A partial enlarged schematic diagram of D in the middle;

[0037] Fig.12 It is a three-dimensional structural schematic diagram of the utility model multifunctional vehicle seat when it is in a bed state;

[0038] Fig.13 yes Fig.12 A partial enlarged schematic diagram of middle E;

[0039] In the figure: 1, base, 2, cushion bracket, 3, cushion frame, 4, third recliner, 5, first seat back frame, 6, first recliner, 7, second seat back frame, 8, second recliner, 9, safety belt, 10, slide rail structure, 10-1, slide rail seat, 10-11, toothed lock groove, 10-2, sliding plate, 10-3, locking structure, 10-31, toothed lock tongue, 10-32, operating lever, 11, first unlocking structure, 11-1, first unlocking handle Handle, 11-2, first zipper, 12, second unlocking structure, 12-1, second unlocking handle, 12-2, second zipper, 13, adjusting knob, 14, third zipper, 15, fourth zipper, 16, first pulling member, 17, fifth zipper, 18, second pulling member, 19, sixth zipper, 20, first limit plate, 21, first limit stroke, 22, second limit plate, 23, second limit stroke, 24, third limit plate, 25, third limit stroke. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] like Figures 1 to 13As shown, a multifunctional vehicle seat includes a base 1, a seat cushion bracket 2, a seat cushion frame 3, a first seat back frame 5 and a second seat back frame 7. The seat cushion bracket 2 is slidably arranged on the base 1 forward and backward; the seat cushion frame 3 is arranged on the seat cushion bracket 2 through a third recliner 4; the first seat back frame 5 is arranged on the base 1 through a first recliner 6, and the first seat back frame 5 can be unfolded forward. When the first seat back frame 5 is unfolded forward, the seat cushion bracket 2 slides forward to make way for the first seat back frame 5; the second seat back frame 7 is arranged on the base 1 through a second recliner 8, and the second seat back frame 7 can be unfolded backward; the first seat back frame 5 and the second seat back frame 7 are arranged side by side front and back. For the convenience of description, in this embodiment, it is assumed that the user faces forward when sitting on the seat.

[0042] Specifically, in this embodiment, Figure 1 and Figure 5 As shown, the multifunctional vehicle seat also includes a safety belt 9, and the safety belt 9 is arranged across the second seat back frame 7 and the first seat back frame 5, that is, the safety belt 9 is jointly supported by the first recliner 6 and the second recliner 8, which greatly increases the safety performance of the safety belt 9, and the first recliner 6 and the second recliner 8 with smaller load-bearing capacity can be selected, so that the safety belt 9 can obtain higher safety performance and greatly reduce costs.

[0043] Specifically, in this embodiment, Figure 1 , Fig.10 and Fig.12 As shown, the seat cushion frame 3 is configured as a double seat cushion frame 3 , the first seat back frame 5 is also a double first seat back frame 5 , and the second seat back frame 7 is also a double second seat back frame 7 .

[0044] Specifically, in this embodiment, Figure 2 , Figure 4 , Figure 8 and Fig. 9As shown, the cushion bracket 2 is set on the base 1 by sliding back and forth through a slide rail structure 10. The slide rail structure 10 includes a slide rail seat 10-1 and a sliding plate 10-2 that cooperate with each other. The slide rail seat 10-1 is set on the base 1, and the sliding plate 10-2 is connected to the cushion bracket 2. The slide rail structure 10 also includes a locking structure 10-3, and the locking structure 10-3 is used to lock the sliding plate 10-2. Furthermore, in this embodiment, the locking structure 10-3 includes a toothed lock tongue 10-31 and an operating rod 10-32, a toothed lock groove 10-11 is provided on the slide rail seat 10-1, the operating rod 10-32 is provided on the sliding plate 10-2, and the toothed lock tongue 10-31 is provided on the operating rod 10-32. When the toothed lock tongue 10-31 is inserted into the toothed lock groove 10-11, the sliding plate 10-2 is locked relative to the slide rail seat 10-1. The operating rod 10-32 of this embodiment is located between the seat cushion frame 3 and the base 1, and the outer end of the operating rod 10-32 is exposed at the front end of the seat.

[0045] Specifically, in this embodiment, Figures 1 to 4 , Figure 6 , Figure 7 , Fig.11 and Fig.13 As shown, the left and right ends of the first chair back frame 5 are provided with the first recliners 6, and the two first recliners 6 are linked together by a first unlocking structure 11. The first unlocking structure 11 includes a first unlocking handle 11-1 and two first zippers 11-2. One ends of the two first zippers 11-2 are connected to the first unlocking handle 11-1, and the other ends of the two first zippers 11-2 are respectively connected to the corresponding two first recliners 6; the left and right ends of the second chair back frame 7 are provided with the second recliners 8, and the two second recliners 8 are linked together by a second unlocking structure 12. The second unlocking structure 12 includes a second unlocking handle 12-1 and two second zippers 12-2. One ends of the two second zippers 12-2 are connected to the second unlocking handle 12-1, and the other ends of the two second zippers 12-2 are respectively connected to the corresponding two second recliners 8; the first unlocking structure 11 and the second unlocking structure 12 can both use existing unlocking structures. Furthermore, in this embodiment, an adjustment knob 13 is provided on the left or right side of the base 1, and the adjustment knob 13 is connected to the first unlocking handle 11-1 through a third zipper 14, and at the same time, the adjustment knob 13 is connected to the second unlocking handle 12-1 through a fourth zipper 15, that is, the adjustment knob 13 simultaneously controls the first angle adjuster 6 and the second angle adjuster 8, thereby realizing the linkage adjustment of the first seat back frame 5 and the second seat back frame 7.

[0046] Specifically, in this embodiment, Figures 1 to 7As shown, the first unlocking structure 11 also includes a first pulling member 16, which is arranged above the first seat back frame 5 and is connected to the first unlocking handle 11-1 through a fifth zipper 17; the second unlocking structure 12 also includes a second pulling member 18, which is arranged above the second seat back frame 7 and is connected to the second unlocking handle 12-1 through a sixth zipper 19, that is, the first pulling member 16 controls the first angle adjuster 6 to achieve separate adjustment of the first seat back frame 5, and the second pulling member 18 controls the second angle adjuster 8 to achieve separate adjustment of the second seat back frame 7.

[0047] Specifically, in this embodiment, Figure 2 , Figure 4 , Figure 6 , Fig.11 and Fig.13 As shown, the first seat back frame 5 is provided with a first limit plate 20, and the base 1 is provided with a first limit stroke 21 matching the first limit plate 20; the second seat back frame 7 is provided with a second limit plate 22, and the base 1 is provided with a second limit stroke 23 matching the second limit plate 22; the seat cushion frame 3 is provided with a third limit plate 24, and the seat cushion bracket 2 is provided with a third limit stroke 25 matching the third limit plate 24; when the multifunctional vehicle seat is in the seat state, the seat cushion frame 3 is tilted downward at a certain angle from front to back. Degree α, at this time, the third limit plate 24 reaches the extreme position of the third limit stroke 25, which effectively prevents the user from sliding forward from the seat cushion frame 3, is more ergonomic, and improves the user's comfort; when the multi-functional vehicle seat is in the bed state, the first limit plate 20 reaches the extreme position of the first limit stroke 21, the second limit plate 22 reaches the extreme position of the second limit stroke 23, and the third limit plate 24 reaches the extreme position of the third limit stroke 25, that is, each limit stroke assists each adjuster, which greatly improves the load-bearing capacity of the multi-functional vehicle seat under extreme conditions.

[0048] In order to facilitate the movement of the overall position of the multifunctional vehicle seat to suit different users and different usage scenarios, in the present embodiment, the base 1 is slidably set on the vehicle floor, that is, the multifunctional vehicle seat is slidably set on the vehicle floor, and its sliding structure can select the existing seat sliding structure.

[0049] Here’s how it works:

[0050] like Figure 1-7 As shown, when the multifunctional vehicle seat is in the seat state:

[0051] The first backrest frame 5 and the second backrest frame 7 are arranged side by side in the vertical direction, and the cushion frame 3 is tilted downward from front to back at an angle of α. At this time, the tilt angles of the first backrest frame 5 and the second backrest frame 7 can be adjusted simultaneously by turning the adjusting knob 13 to adapt to the user's sitting posture, greatly improving the user's good experience. Specifically, when the adjusting knob 13 is turned, the adjusting knob 13 drives the first unlocking handle 11-1 to swing through the third zipper 14, thereby driving the first zipper 11-2 to unlock the first angle adjuster 6. At this time, the first backrest frame 5 can be rotated forward and backward to adjust its tilt angle; at the same time, when the adjusting knob 13 is turned, the adjusting knob 13 drives the second unlocking handle 12-1 to swing through the fourth zipper 15, thereby driving the second zipper 12-2 to unlock the second angle adjuster 8. At this time, the second backrest frame 7 can be rotated forward and backward to adjust its tilt angle, that is, the linkage between the first backrest frame 5 and the second backrest frame 7 is realized, making the backrest adjustment very convenient. Among them, the safety belt 9 crosses the second seat back frame 7 and the first seat back frame 5, that is, the safety belt 9 is jointly supported by the first recliner 6 and the second recliner 8, which greatly increases the safety performance of the safety belt 9, and the first recliner 6 and the second recliner 8 with smaller load can be selected, so that the safety belt 9 can obtain higher safety performance and greatly reduce costs. Among them, the cushion frame 3 is tilted downward at an angle α from front to back, and the third limit plate 24 reaches the extreme position of the third limit stroke 25, which effectively prevents the user from sliding forward from the cushion frame 3, is more ergonomic, and improves the user's comfort. The third limit stroke 25 assists the third recliner 4, which greatly improves the load-bearing capacity of the multifunctional vehicle seat in the seat state.

[0052] When the multifunctional vehicle seat is in the seat state, the second seat back frame 7 can be laid flat and used as a multifunctional table: specifically, the second pulling member 18 is pulled, and the second pulling member 18 drives the second unlocking handle 12-1 to swing, thereby driving the second zipper 12-2 to unlock the second recliner 8. At this time, the second seat back frame 7 is rotated backward until the second seat back frame 7 is laid down, and the second limiting plate 22 reaches the extreme position of the second limiting stroke 23. The second limiting stroke 23 assists the second recliner 8, greatly improving the load-bearing capacity of the second seat back frame 7. Fig.10 As shown, at this time, the second seat back frame 7 is laid flat and used as a multi-functional table, or, at this time, the second seat back frame 7 is extended into the trunk as a multi-functional table, on which items can be placed, and can also be used as a seat, which can better meet the various needs of outdoor activities.

[0053] The process of the multifunctional vehicle seat changing from the seat state to the bed state is as follows:

[0054] First, the toothed lock tongue 10-31 is driven by the operating rod 10-32 to disengage the toothed lock groove 10-11 to unlock the locking structure 10-3. At this time, the seat cushion frame 3 and the seat cushion bracket 2 are pulled forward until the seat cushion frame 3 gives way to the first seat back frame 5; then the third recliner 4 is unlocked, and the seat cushion frame 3 is flipped forward so that the seat cushion frame 3 gives way to the first seat back frame 5; then the first pulling member 16 is pulled, and the first pulling member 16 drives the first unlocking handle 11-1 to swing, thereby driving the first zipper 11-2 to unlock the first recliner 6. At this time, the first seat back frame 5 is rotated forward until the first seat back frame 5 is laid down; then the second pulling member 18 is pulled, and the second pulling member 18 drives the second unlocking handle 12-1 to swing, thereby driving the second zipper 12-2 to unlock the second recliner 8. At this time, the second seat back frame 7 is rotated backward until the second seat back frame 7 is laid down. Fig.12 As shown, the adjustment from the seat state to the bed state is completed, and the length of the bed state of the multifunctional vehicle seat is greatly increased, which improves the user's good experience of lying down. In the bed state, the cushion frame 3 can be used as a leg rest, and the inclination angle of the cushion frame 3 is changed by the third angle adjuster 4 to adapt to the user's posture, greatly improving the user's good experience. Among them, the first limit plate 20 reaches the limit position of the first limit stroke 21, and the first limit stroke 21 assists the first angle adjuster 6, greatly improving the load-bearing capacity of the first chair back frame 5; and the second limit plate 22 reaches the limit position of the second limit stroke 23, and the second limit stroke 23 assists the second angle adjuster 8, greatly improving the load-bearing capacity of the second chair back frame 7.

[0055] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A multifunctional vehicle seat, characterized in that: include, Base (1); A seat cushion bracket (2), the seat cushion bracket (2) being slidably arranged on the base (1) forward and backward; A seat cushion frame (3), wherein the seat cushion frame (3) is arranged on the seat cushion bracket (2) via a third angle adjuster (4); A first chair back frame (5), the first chair back frame (5) is arranged on the base (1) through a first angle adjuster (6), the first chair back frame (5) can be unfolded forward, and when the first chair back frame (5) is unfolded forward, the seat cushion bracket (2) slides forward to make way for the first chair back frame (5); and a second backrest frame (7), wherein the second backrest frame (7) is arranged on the base (1) via a second angle adjuster (8), and the second backrest frame (7) can be unfolded backwards; and the first backrest frame (5) and the second backrest frame (7) are arranged side by side front and back.

2. The multifunctional vehicle seat according to claim 1, characterized in that: The multifunctional vehicle seat also includes a safety belt (9), which is arranged across the second seat back frame (7) and the first seat back frame (5).

3. The multifunctional vehicle seat according to claim 1, characterized in that: The seat cushion bracket (2) is slidably arranged on the base (1) via a slide rail structure (10); the slide rail structure (10) comprises a slide rail seat (10-1) and a sliding plate (10-2) which cooperate with each other; the slide rail seat (10-1) is arranged on the base (1); the sliding plate (10-2) is connected to the seat cushion bracket (2); the slide rail structure (10) further comprises a locking structure (10-3); the locking structure (10-3) is used to lock the sliding plate (10-2).

4. The multifunctional vehicle seat according to claim 3, characterized in that: The locking structure (10-3) comprises a toothed locking tongue (10-31) and an operating rod (10-32); a toothed locking groove (10-11) is provided on the slide rail seat (10-1); the operating rod (10-32) is provided on the sliding plate (10-2); the toothed locking tongue (10-31) is provided on the operating rod (10-32); when the toothed locking tongue (10-31) is inserted into the toothed locking groove (10-11), the sliding plate (10-2) is locked relative to the slide rail seat (10-1).

5. The multifunctional vehicle seat according to claim 1, characterized in that: The first recliners (6) are arranged at both left and right ends of the first chair back frame (5), and the two first recliners (6) are linked together by a first unlocking structure (11). The first unlocking structure (11) includes a first unlocking handle (11-1) and two first zippers (11-2). One end of the two first zippers (11-2) is connected to the first unlocking handle (11-1), and the other end of the two first zippers (11-2) is respectively connected to the corresponding two first recliners (6); the second recliners (8) are arranged at both left and right ends of the second chair back frame (7), and the two second recliners (8) are linked together by a second unlocking structure (12). The second unlocking structure (12) includes a second unlocking handle (12-1) and two second zippers (12-2). One end of the two second zippers (12-2) is connected to the second unlocking handle (12-1), and the other end of the two second zippers (12-2) is respectively connected to the corresponding two second recliners (8).

6. The multifunctional vehicle seat according to claim 5, characterized in that: An adjusting knob (13) is provided on the left or right side of the base (1); the adjusting knob (13) is connected to the first unlocking handle (11-1) via a third zipper (14); and the adjusting knob (13) is connected to the second unlocking handle (12-1) via a fourth zipper (15).

7. The multifunctional vehicle seat according to claim 6, characterized in that: The first unlocking structure (11) further comprises a first pulling member (16), the first pulling member (16) being arranged above the first seat back frame (5), and the first pulling member (16) being connected to the first unlocking handle (11-1) via a fifth zipper (17); the second unlocking structure (12) further comprises a second pulling member (18), the second pulling member (18) being arranged above the second seat back frame (7), and the second pulling member (18) being connected to the second unlocking handle (12-1) via a sixth zipper (19).

8. The multifunctional vehicle seat according to any one of claims 1 to 7, characterized in that: The first seat back frame (5) is provided with a first limit plate (20), and the base (1) is provided with a first limit stroke (21) matching the first limit plate (20); the second seat back frame (7) is provided with a second limit plate (22), and the base (1) is provided with a second limit stroke (23) matching the second limit plate (22); the seat cushion frame (3) is provided with a third limit plate (24), and the seat cushion bracket (2) is provided with a third limit stroke (25) matching the third limit plate (24).

9. The multifunctional vehicle seat according to claim 8, characterized in that: The seat cushion frame (3) is tilted downward at a certain angle α from front to back.

10. The multifunctional vehicle seat according to any one of claims 1 to 7, characterized in that: The base (1) is slidably arranged on the vehicle floor.

11. The multifunctional vehicle seat according to any one of claims 1 to 7, characterized in that: The seat cushion frame (3) is configured as a double seat cushion frame (3), the first chair back frame (5) is also a double first chair back frame (5), and the second chair back frame (7) is also a double second chair back frame (7).

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