Rear-row seat framework structure and vehicle

Abstract

The utility model provides a rear-row seat framework structure and a vehicle. The rear-row seat framework structure comprises a cushion frame, a first connecting rod assembly and a backrest frame rotationally arranged on a vehicle floor. One end of the cushion frame is rotationally connected with the backrest frame, and the other end of the cushion frame is rotationally connected with the first connecting rod assembly; the end, away from the cushion frame, of the first connecting rod assembly is rotationally installed on a vehicle floor. The first rotating shaft between the backrest frame and the vehicle floor is higher than the second rotating shaft between the backrest frame and the cushion frame. According to the utility model, when the inclination angle of the backrest frame is adjusted, the cushion frame can be synchronously linked with the backrest frame, so that the adjusting efficiency and the riding comfort are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle bodies, and particularly relates to a rear seat frame structure and a vehicle. Background Art

[0002] At present, the adjustable rear seats in vehicles usually only provide a certain degree of backrest angle adjustment. Since the rear seat can only adjust the backrest angle, and the angle position of the seat cushion is often fixed, thus, when the rear passengers need to take a long ride in the vehicle, or different body size passengers take the same rear seat, it is impossible to adjust the seat cushion specifically while adjusting the backrest angle, and then the problem of insufficient comfort of the rear seat exists. Summary of the Utility Model

[0003] Aiming at the technical problems such as insufficient comfort of the rear seat in the prior art, the utility model provides a rear seat frame structure and a vehicle.

[0004] In view of the above technical problems, an embodiment of the utility model provides a rear seat frame structure, including a seat cushion frame, a first link assembly, and a backrest frame rotatably arranged on a vehicle floor; one end of the seat cushion frame is rotatably connected to the backrest frame, and the other end of the seat cushion frame is rotatably connected to the first link assembly; the end of the first link assembly away from the seat cushion frame is rotatably installed on the vehicle floor;

[0005] A first rotating shaft between the backrest frame and the vehicle floor and a second rotating shaft between the backrest frame and the seat cushion frame are arranged in parallel; the height of the first rotating shaft is higher than that of the second rotating shaft.

[0006] Optionally, the backrest frame includes a backrest frame body and a fixed rod assembly, the backrest frame body is rotatably arranged on the vehicle floor, one end of the fixed rod assembly is fixedly connected to the backrest frame body, and the other end of the fixed rod assembly is rotatably connected to the seat cushion frame.

[0007] Optionally, the fixed rod assembly includes a first fixed rod and a second fixed rod fixedly connected to opposite sides of the backrest frame body; the first fixed rod and the second fixed rod are arranged in parallel and symmetrically.

[0008] Optionally, the seat cushion frame includes a seat frame body and a second link assembly fixedly connected to the seat frame body, the end of the second link assembly away from the seat frame body is rotatably connected to the fixed rod assembly, and the end of the seat frame body away from the second link assembly is rotatably connected to the first link assembly.

[0009] Optionally, the second link assembly includes a first connecting rod and a second connecting rod fixedly connected to opposite sides of the seat frame body, and the first connecting rod and the second connecting rod are arranged in parallel and symmetrically.

[0010] Optionally, the rear seat frame structure further includes a first mounting bracket and a second mounting bracket both fixedly installed on the vehicle floor; the first mounting bracket and the second mounting bracket are symmetrically arranged on opposite sides of the backrest frame; and both the first mounting bracket and the second mounting bracket are rotatably connected to the backrest frame.

[0011] Optionally, the rear seat frame structure further includes an angle adjuster; the angle adjuster is installed between the first mounting bracket and the backrest frame, or the angle adjuster is installed between the second mounting bracket and the backrest frame.

[0012] Optionally, the first link assembly includes a third connecting rod and a fourth connecting rod rotatably connected to opposite sides of the seat cushion frame, and the third connecting rod and the fourth connecting rod are arranged in parallel and symmetrically.

[0013] Optionally, the rear seat frame structure further includes a third mounting bracket and a fourth mounting bracket both fixedly installed on the vehicle floor; the third mounting bracket is rotatably connected to one end of the third connecting rod away from the seat cushion frame, and the fourth mounting bracket is rotatably connected to one end of the fourth connecting rod away from the seat cushion frame.

[0014] The present utility model further provides a vehicle, including the above-mentioned rear seat frame structure, the rear seat frame structure including a seat cushion frame, a first link assembly, and a backrest frame rotatably installed on the vehicle floor; one end of the seat cushion frame is rotatably connected to the backrest frame, and the other end of the seat cushion frame is rotatably connected to the first link assembly; one end of the first link assembly away from the seat cushion frame is rotatably installed on the vehicle floor; a first rotating shaft between the backrest frame and the vehicle floor and a second rotating shaft between the backrest frame and the seat cushion frame are arranged in parallel; and the height of the first rotating shaft is higher than that of the second rotating shaft.

[0015] In the above embodiments of the present utility model, since both ends of the seat cushion frame are respectively rotatably connected to the backrest frame and the first link assembly, and the first link assembly is rotatably installed on the vehicle floor, and the height of the first rotating shaft is higher than that of the second rotating shaft. Therefore, when adjusting the tilt angle of the backrest frame, the seat cushion frame can be synchronously linked with the backrest frame, and the front-back movement of the seat cushion frame relative to the vehicle floor in the horizontal direction can be realized. In addition, the height of the first rotating shaft is higher than that of the second rotating shaft, which can better transmit the rotational torque of the backrest frame to the seat cushion frame, thereby driving the seat cushion frame to move with the backrest frame. Furthermore, within the limited vehicle space, the angle adjustment of the rear seat frame structure of the vehicle can be carried out within a larger angle adjustment range, improving the adjustment efficiency and riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of a rear seat frame structure provided by an embodiment of the present utility model;

[0018] Figure 2 is a schematic structural diagram of a rear seat frame structure provided by another embodiment of the present utility model;

[0019] Figure 3 is a schematic diagram of the design state of a rear seat frame structure provided by an embodiment of the present utility model;

[0020] Figure 4 is a schematic diagram of the final position state of a rear seat frame structure provided by an embodiment of the present utility model.

[0021] The reference numerals in the specification are as follows:

[0022] 1 - seat cushion frame, 11 - seat frame body, 12 - second link assembly, 121 - first connecting rod, 122 - second connecting rod, 2 - first link assembly, 21 - third connecting rod, 22 - fourth connecting rod, 3 - backrest frame, 31 - back frame body, 32 - fixed rod assembly, 321 - first fixed rod, 322 - second fixed rod, 4 - first rotating shaft, 5 - second rotating shaft, 6 - third rotating shaft, 7 - fourth rotating shaft, 8 - first mounting bracket, 9 - second mounting bracket, 10 - angle adjuster, 13 - third mounting bracket, 14 - fourth mounting bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] Such as Figures 1 to 2As shown, an embodiment of the utility model provides a rear seat frame structure, including a cushion frame 1, a first connecting rod assembly 2, and a backrest frame 3 rotatably arranged on the vehicle floor; one end of the cushion frame 1 is rotatably connected to the backrest frame 3, and the other end of the cushion frame 1 is rotatably connected to the first connecting rod assembly 2; the first connecting rod assembly 2 is rotatably installed on the vehicle floor at one end away from the cushion frame 1; the height of the first rotating shaft 4 between the backrest frame 3 and the vehicle floor is higher than the height of the second rotating shaft 5 between the backrest frame 3 and the cushion frame 1. That is, the height of the first rotating shaft 4 is higher than the second rotating shaft 5, which can ensure that the backrest frame 3 and the vehicle floor, as well as the backrest frame 3 and the cushion frame 1, can realize linkage rotation without mutual interference, and at the same time make the backrest frame 3 have a larger angle adjustable range relative to the cushion frame 1 and the vehicle floor. Among them, one end of the cushion frame 1 is rotatably connected to the backrest frame 3, and the other end of the cushion frame 1 is rotatably connected to the first connecting rod assembly 2, and the first connecting rod assembly 2 is rotatably installed on the vehicle floor, that is, one end of the cushion frame 1 is rotatably connected to the backrest frame 3. Taking the backward tilt adjustment angle of the backrest frame 3 as an example, the backrest frame 3 will rotate backward around the first rotating shaft 4. At this time, since the height of the first rotating shaft 4 is higher than the second rotating shaft 5, and the second rotating shaft 5 is rotatably connected between the backrest frame 3 and the cushion frame 1, the second rotating shaft 5 will move forward with the backward rotation of the backrest frame 3. At this time, it will also push the cushion frame 1 to move forward in conjunction, thereby changing the horizontal position of the cushion frame 1; the forward tilt adjustment angle of the backrest frame 3 is the same, and it will not be repeated again. It can be understood that the other end of the seat cushion frame 1 is rotatably connected to the first connecting rod assembly 2, and the first connecting rod assembly 2 is not only connected to the seat cushion frame 1, but also rotatably installed on the vehicle floor. When the seat cushion frame 1 moves with the backrest frame 3, the position of the first connecting rod assembly 2 is adjusted accordingly to adapt to the position adjustment of the seat cushion frame 1; in this way, the horizontal forward and backward movement of the seat cushion frame 1 relative to the vehicle floor can be synchronously achieved within a certain range, thereby adapting to the leg length and sitting habits of different passengers.

[0027] In the above embodiment of the utility model, since the two ends of the cushion frame 1 are rotatably connected with the backrest frame 3 and the first connecting rod assembly 2 respectively, and the first connecting rod assembly 2 is rotatably mounted on the vehicle floor, the height of the first rotating shaft 4 is higher than the second rotating shaft 5. Therefore, when adjusting the inclination angle of the backrest frame 3, the cushion frame 1 can follow the backrest frame 3 in synchronous linkage, and the cushion frame 1 can move forward and backward in the horizontal direction relative to the vehicle floor. In addition, the height of the first rotating shaft 4 is higher than the second rotating shaft 5, which can better transmit the rotational torque of the backrest frame 3 to the cushion frame 1, thereby pushing the cushion frame 1 to move with the backrest frame 3, and then in the limited vehicle space, the rear seat frame structure of the vehicle can be adjusted in a larger adjustment angle range, thereby improving the adjustment efficiency and riding comfort.

[0028] Furthermore, the third rotating shaft 6 between the seat cushion frame 1 and the first connecting rod assembly 2 is located behind the fourth rotating shaft 7 between the first connecting rod assembly 2 and the vehicle floor. In this way, when the backrest frame 3 rotates backward around the first rotating shaft 4, since the height of the first rotating shaft 4 is higher than the second rotating shaft 5, and the second rotating shaft 5 is rotatably connected between the backrest frame 3 and the seat cushion frame 1, the second rotating shaft 5 will move forward as the backrest frame 3 rotates backward. At this time, the seat cushion frame 1 will also be pushed to move forward in conjunction. Since the third rotating shaft 6 is located behind the fourth rotating shaft 7, the end of the first connecting rod assembly 2 connected to the seat cushion frame 1 will move forward and upward driven by the seat cushion frame 1. In this way, the seat cushion frame 1 will also move up accordingly. That is, at this time, the seat cushion frame 1 will move forward and lift while the backrest frame 3 is tilted forward.

[0029] Furthermore, the first rotating shaft 4 between the backrest frame 3 and the vehicle floor, the second rotating shaft 5 between the backrest frame 3 and the cushion frame 1, the third rotating shaft 6 between the cushion frame 1 and the first connecting rod assembly 2, and the fourth rotating shaft 7 between the first connecting rod assembly 2 and the vehicle floor are all arranged in parallel, so that a planar connecting rod mechanism is formed between the backrest frame 3, the cushion frame 1 and the first connecting rod assembly 2, thereby ensuring that the movement process of the rear seat skeleton structure will not be offset, thereby ensuring the controllability and certainty of the movement of the rear seat skeleton structure.

[0030] In one embodiment, if Figure 1 and Figure 2As shown, the backrest frame 3 includes a backrest frame body 31 and a fixing rod assembly 32. The backrest frame body 31 is rotatably arranged on the vehicle floor. One end of the fixing rod assembly 32 is fixedly connected to the backrest frame body 31, and the other end of the fixing rod assembly 32 is rotatably connected to the seat cushion frame 1. Understandably, the backrest frame body 31 of the backrest frame 3 is rotatably connected to the vehicle floor, and this connection method provides a stable base for the rotation of the backrest frame body 31; one end of the fixing rod assembly 32 of the backrest frame 3 is fixedly connected to the backrest frame body 31, and the other end of the fixing rod assembly 32 is rotatably connected to the seat cushion frame 1. When adjusting the tilt angle of the backrest frame 3, the fixing rod assembly 32 serves as an intermediary for mechanical transmission and can transmit the rotational torque of the backrest frame 3 to the seat cushion frame 1, thereby realizing the synchronous linkage adjustment of the backrest frame 3 and the seat cushion frame 1. Among them, the way of fixedly connecting one end of the fixing rod assembly 32 of the backrest frame 3 to the backrest frame body 31 can be welding, riveting, bonding, integral molding connection, etc., and no specific limitation is made here.

[0031] In one embodiment, as Figure 1 and Figure 2 shown, the fixing rod assembly 32 includes a first fixing rod 321 and a second fixing rod 322 fixedly connected to opposite sides of the backrest frame body 31; the first fixing rod 321 and the second fixing rod 322 are arranged in parallel and symmetrically. Understandably, the first ends of both the first fixing rod 321 and the second fixing rod 322 are fixedly connected to the backrest frame body 31. The end of the first fixing rod 321 away from the backrest frame body 31 is hinged to the seat cushion frame 1 at a first hinge point; the end of the second fixing rod 322 away from the backrest frame body 31 is hinged to the seat cushion frame 1 at a second hinge point, and the second rotating shaft 5 passes through the first hinge point and the second hinge point (that is, the line connecting the first hinge point and the second hinge point is the second rotating shaft 5); thus, when adjusting the angle of the backrest frame 3, only need to apply force on the backrest frame 3 to make the backrest frame 3 rotate around the second rotating shaft 5. At this time, since the first fixing rod 321 and the second fixing rod 322 are hinged to the seat cushion frame 1, the seat cushion frame 1 also rotates relative to the backrest frame 3 around the second rotating shaft 5. That is, as the backrest frame 3 rotates, the first fixing rod 321 and the second fixing rod 322 will drive the seat cushion frame 1 to rotate around the second rotating shaft 5 in linkage to adjust its position in the horizontal direction and the height direction, realizing the synchronous adjustment of the seat cushion frame 1 and the backrest seat cushion frame 1.

[0032] In one embodiment, as Figures 1 to 4As shown, the seat cushion frame 1 includes a seat frame body 11 and a second link assembly 12 fixedly connected to the seat frame body 11. One end of the second link assembly 12 away from the seat frame body 11 is rotatably connected to the fixed rod assembly 32, and one end of the seat frame body 11 away from the second link assembly 12 is rotatably connected to the first link assembly 2. Understandably, one end of the second link assembly 12 of the seat cushion frame 1 is fixedly connected to the seat frame body 11 of the seat cushion frame 1, and the other end of the second link assembly 12 is rotatably connected to the fixed rod assembly 32 through a second rotating shaft 5. Thus, in the absence of any external force, the seat cushion frame 1 and the backrest frame 3 remain at a relatively fixed angle and position. When it is necessary to adjust the angle of the backrest frame 3 backward, a force is applied to the backrest frame 3 to make the backrest frame 3 rotate backward around the first rotating shaft 4. At this time, since the second link assembly 12 is rotatably connected to the fixed rod assembly 32 of the backrest frame 3 through the second rotating shaft 5, and the seat frame body 11 is fixedly connected to the second link assembly 12, the backrest frame 3 will push the second link assembly 11 and the seat cushion frame 1 forward and upward through the fixed rod assembly 32. And after the force applied to the backrest frame 3 is stopped, the seat cushion frame 1 and the backrest frame 3 will remain in a new stable state, maintaining a new relatively fixed angle and position between them.

[0033] In one embodiment, as Figures 1 to 4 shown, the second link assembly 12 includes a first connecting rod 121 and a second connecting rod 122 fixedly connected to opposite sides of the seat frame body 11. The first connecting rod 121 and the second connecting rod 122 are arranged in parallel and symmetrically. Understandably, the first ends of the first connecting rod 121 and the second connecting rod 122 are both welded to the seat frame body 11. The second end of the first connecting rod 121 is hinged to the first fixed rod 321 at a first hinge point, and the second end of the second connecting rod 122 is hinged to the second fixed rod 322 at a second hinge point. Thus, while ensuring the stable and reliable connection between the second link assembly 12 and the fixed rod assembly 32, the movement of the seat frame body 11 can be driven by adjusting the inclination angle of the backrest frame 3, and further the linkage adjustment of the seat frame body 11 and the backrest frame 3 can be realized. Among them, the first connecting rod 121 and the second connecting rod 122 are arranged in parallel and symmetrically, which can ensure the stability and symmetry of the rear seat frame structure.

[0034] In one embodiment, as Figure 1 and Figure 2As shown, the rear seat frame structure further includes a first mounting bracket 8 and a second mounting bracket 9 both fixedly installed on the vehicle floor; the first mounting bracket 8 and the second mounting bracket 9 are symmetrically arranged on opposite sides of the backrest frame 3; and both the first mounting bracket 8 and the second mounting bracket 9 are rotatably connected to the backrest frame 3. Understandably, the first mounting bracket 8 and the second mounting bracket 9 are both fixedly installed on the vehicle floor, providing stable support for the backrest frame 3. Among them, both the first mounting bracket 8 and the second mounting bracket 9 are rotatably connected to the backrest frame 3, and the backrest frame 3 is allowed to be adjusted at an angle within a certain range, and its adjustable angle range can be set according to the actual vehicle structure, requirements or comfort level.

[0035] In one embodiment, as Figure 1 and Figure 2 shown, the rear seat frame structure further includes an angle adjuster 10; the angle adjuster 10 is installed between the first mounting bracket 8 and the backrest frame 3, or the angle adjuster 10 is installed between the second mounting bracket 9 and the backrest frame 3. Understandably, there are various options for the installation position of the angle adjuster 10. Specifically, the angle adjuster 10 can be installed between the first mounting bracket 8 and the backrest frame 3, or can be installed between the second mounting bracket 9 and the backrest frame 3. Further, the driving method of the angle adjuster 10 can be manual or electric. In this embodiment, the tilt angle of the backrest frame 3 can be automatically adjusted based on the electric angle adjuster according to the adjustment instruction through the angle adjuster 10, or the tilt angle of the backrest frame 3 can be manually adjusted through the manual angle adjuster, and finally the linkage adjustment between the backrest frame 3 and the seat cushion frame 1 is realized.

[0036] In one embodiment, as Figure 1 , Figure 3 , Figure 4 shown, the first link assembly 2 includes a third connecting rod 21 and a fourth connecting rod 22 rotatably connected to opposite sides of the seat cushion frame 1, and the third connecting rod 21 and the fourth connecting rod 22 are arranged in parallel and symmetrically. Understandably, the third connecting rod 21 and the fourth connecting rod 22 are rotatably connected to opposite sides of the seat cushion frame 1 in parallel and symmetrically, which can ensure that after the seat cushion frame 1 changes its position due to the torque transmitted by the backrest frame 3, through the adaptive adjustment of the positions of the third connecting rod 21 and the fourth connecting rod 22, the seat cushion frame 1 can remain stable and be effectively supported during the position adjustment process, thus ensuring the feasibility of the seat adjustment and also improving the comfort of the seat after adjustment.

[0037] In one embodiment, as Figure 1 and Figure 2As shown, the rear seat frame structure further includes a third mounting bracket 13 and a fourth mounting bracket 14 both fixedly mounted on the vehicle floor; the third mounting bracket 13 is rotatably connected to one end of the third connecting rod 21 away from the seat cushion frame 1, and the fourth mounting bracket 14 is rotatably connected to one end of the fourth connecting rod 22 away from the seat cushion frame 1. Understandably, both the third mounting bracket 13 and the fourth mounting bracket 14 are fixedly mounted on the vehicle floor by step bolts, providing stable and effective support for the installation and movement of the first link assembly 2 and the seat cushion frame 1.

[0038] In the above embodiments of the present invention, when the angle adjuster 10 is driven manually or electrically, the backrest frame 3 rotates around the first rotating shaft 4 relative to the first mounting bracket 8 and the second mounting bracket 9. Taking the backward fall of the backrest frame 3 as an example, since the backrest frame 3 is fixedly connected to the first fixing rod 321 and the second fixing rod 322, therefore, the backrest frame 3 drives the first fixing rod 321 and the second fixing rod 322 to move around the first rotating shaft 4 together; furthermore, since the first fixing rod 321 is rotatably connected to the first connecting rod 121 and the second fixing rod 322 is rotatably connected to the second connecting rod 122, the first fixing rod 321 will drive the first connecting rod 121 to move forward synchronously, and the second fixing rod 322 will drive the second connecting rod 122 to move forward synchronously; and since the first connecting rod 121 and the second connecting rod 122 are fixedly connected to the seat cushion frame 1, therefore, while the first connecting rod 121 and the second connecting rod 122 move forward, they can also drive the seat cushion frame 1 to move forward; during the forward movement of the seat cushion frame 1, the third connecting rod 21 and the fourth connecting rod 22 are driven by the seat cushion frame 1 to rotate around the fourth rotating shaft 7, and thus, while not interfering with the forward movement of the seat cushion frame 1, it also provides effective support for the seat cushion frame 1 in terms of height, ensuring the structural stability of the seat cushion frame 1 during and after movement.

[0039] The present invention also provides a vehicle including the above-mentioned rear seat frame structure. In the vehicle in the above embodiments of the present invention, the rear seat frame structure includes a seat cushion frame 1, a first link assembly 2, and a backrest frame 3 rotatably provided on the vehicle floor; one end of the seat cushion frame 1 is rotatably connected to the backrest frame 3, and the other end of the seat cushion frame 1 is rotatably connected to the first link assembly 2; one end of the first link assembly 2 away from the seat cushion frame 1 is rotatably mounted on the vehicle floor; the height of the first rotating shaft 4 between the backrest frame 3 and the vehicle floor is higher than the height of the second rotating shaft 5 between the backrest frame 3 and the seat cushion frame 1.

[0040] In the vehicle of the above embodiment of the utility model, since the two ends of the cushion frame 1 of the rear seat skeleton structure are respectively connected to the backrest frame 3 and the first connecting rod assembly 2 for rotation, and the first connecting rod assembly 2 is rotatably mounted on the vehicle floor, the height of the first rotating shaft 4 is higher than the second rotating shaft 5. Therefore, when adjusting the inclination angle of the backrest frame 3, the cushion frame 1 can follow the backrest frame 3 for synchronous linkage, and the cushion frame 1 can move forward and backward in the horizontal direction relative to the vehicle floor. In addition, the height of the first rotating shaft 4 is higher than the second rotating shaft 5, which can better transmit the rotation torque of the backrest frame 3 to the cushion frame 1, thereby pushing the cushion frame 1 to move with the backrest frame 3, and then in the limited vehicle space, the rear seat skeleton structure of the vehicle can be adjusted in a larger adjustment angle range, thereby improving the adjustment efficiency and riding comfort.

[0041] The above are only embodiments of the rear seat frame structure and vehicle of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rear seat frame structure, characterized in that, It includes a seat cushion frame (1), a first link assembly (2), and a backrest frame (3) rotatably arranged on the vehicle floor; one end of the seat cushion frame (1) is rotatably connected to the backrest frame (3), and the other end of the seat cushion frame (1) is rotatably connected to the first link assembly (2); the end of the first link assembly (2) away from the seat cushion frame (1) is rotatably mounted on the vehicle floor. The height of the first rotating shaft (4) between the backrest frame (3) and the vehicle floor is higher than the height of the second rotating shaft (5) between the backrest frame (3) and the seat cushion frame (1).

2. The rear seat frame structure according to claim 1, characterized in that, The backrest frame (3) includes a backrest frame body (31) and a fixed rod assembly (32), the backrest frame body (31) is rotatably arranged on the vehicle floor, one end of the fixed rod assembly (32) is fixedly connected to the backrest frame body (31), and the other end of the fixed rod assembly (32) is rotatably connected to the seat cushion frame (1).

3. The rear seat frame structure according to claim 2, wherein, The fixed rod assembly (32) includes a first fixed rod (321) and a second fixed rod (322) fixedly connected to opposite sides of the backrest frame body (31); the first fixed rod (321) and the second fixed rod (322) are arranged in parallel and symmetrically.

4. The rear seat frame structure according to claim 2, characterized in that, The seat cushion frame (1) includes a seat frame body (11) and a second link assembly (12) fixedly connected to the seat frame body (11), the end of the second link assembly (12) away from the seat frame body (11) is rotatably connected to the fixed rod assembly (32), and the end of the seat frame body (11) away from the second link assembly (12) is rotatably connected to the first link assembly (2).

5. The rear seat frame structure according to claim 4, characterized in that, The second link assembly (12) includes a first connecting rod (121) and a second connecting rod (122) fixedly connected to opposite sides of the seat frame body (11), the first connecting rod (121) and the second connecting rod (122) are arranged in parallel and symmetrically.

6. The rear seat frame structure according to claim 1, characterized in that, The rear seat frame structure further includes a first mounting bracket (8) and a second mounting bracket (9) both fixedly installed on the vehicle floor; the first mounting bracket (8) and the second mounting bracket (9) are symmetrically arranged on opposite sides of the backrest frame (3); and both the first mounting bracket (8) and the second mounting bracket (9) are rotatably connected to the backrest frame (3).

7. The rear seat frame structure according to claim 6, characterized in that, The rear seat frame structure further includes an angle adjuster (10); the angle adjuster (10) is installed between the first mounting bracket (8) and the backrest frame (3), or the angle adjuster (10) is installed between the second mounting bracket (9) and the backrest frame (3).

8. The rear seat frame structure according to claim 1, wherein The third rotating shaft (6) between the seat cushion frame (1) and the first link assembly (2) is located behind the fourth rotating shaft (7) between the first link assembly (2) and the vehicle floor.

9. The rear seat frame structure according to claim 8, wherein, The first link assembly (2) includes a third connecting rod (21) and a fourth connecting rod (22) rotatably connected to opposite sides of the seat cushion frame (1), the third connecting rod (21) and the fourth connecting rod (22) are arranged in parallel and symmetrically; The rear seat frame structure further includes a third mounting bracket (13) and a fourth mounting bracket (14) both fixedly mounted on the vehicle floor; the third mounting bracket (13) is rotatably connected to one end of the third connecting rod (21) away from the seat cushion frame (1), and the fourth mounting bracket (14) is rotatably connected to one end of the fourth connecting rod (22) away from the seat cushion frame (1).

10. A vehicle, characterized in that, Comprising the rear seat frame structure according to any one of claims 1 to 9.

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