Seat frame assembly and vehicle

Abstract

The utility model discloses an embodiment proposes a kind of seat framework assembly and vehicle, it is related to vehicle manufacturing technical field, comprising: backrest framework;Cushion framework, the rear portion of cushion framework is equipped with lower connecting plate, the bottom of backrest framework is rotatably connected in lower connecting plate around backrest rotation axis, and the upper portion of cushion framework has the standard seat position point corresponding with user;Wherein, lower connecting plate and cushion framework between there are at least two connecting positions, one connecting position in two connecting positions located in rear side is lower than one connecting position located in front side, and make backrest rotation axis lower than standard seat position point.The seat framework assembly of the utility model embodiment, the overall height of seat framework assembly can be reduced, reduce the space occupied, improve lightweight, and avoid the gap between backrest framework and cushion framework, improve the comfort of passenger seating, to ensure the use experience of passenger, simple structure, use effect is better, more widely applicable.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a seat frame assembly and a vehicle having the seat frame assembly. Background Technology

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming increasingly important in daily life and travel, and the user experience is a key consideration during vehicle manufacturing. Vehicles are equipped with seats that can be adjusted in position and configuration according to the different needs, conditions, and habits of the driver and passengers to achieve a comfortable seating posture. Existing vehicles have seats with reclining backrests, allowing passengers to lie down for rest and other needs, thus improving comfort. However, when the seat backrests are reclined, the area near the seat cushion arches upwards, which can push against the passenger's lower back, affecting comfort and indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a seat frame assembly with a simple structure, which can reduce the overall height of the seat frame assembly, reduce the space occupied, thereby improving weight reduction, and ensuring the riding comfort of passengers, thus improving the user experience.

[0004] According to an embodiment of the present utility model, a seat frame assembly includes: a backrest frame; a seat cushion frame, wherein a lower connecting plate is provided at the rear of the seat cushion frame, the bottom of the backrest frame is rotatably connected to the lower connecting plate about the backrest rotation axis, and the upper part of the seat cushion frame has a standard seating position point corresponding to the user; wherein, there are at least two connection positions between the lower connecting plate and the seat cushion frame, wherein one of the two connection positions located on the rear side is lower than the connection position located on the front side, and the backrest rotation axis is lower than the standard seating position point.

[0005] According to the embodiment of the present utility model, the seat frame assembly reduces the overall height of the seat frame assembly by setting one of the two connection positions on the rear side to be lower than the connection position on the front side, thereby reducing the space occupied and improving weight reduction. It also makes the rotation axis of the backrest lower than the standard sitting position point, avoiding a gap between the backrest frame and the seat cushion frame, improving the comfort of the occupant, and thus ensuring the user experience of the occupant. The structure is simple, the effect is better, and the application range is wider.

[0006] According to some embodiments of the present invention, the seat frame assembly includes at least one first connection position and at least one second connection position. The first connection position is located below and in front of the backrest rotation axis, and the second connection position is located below and behind the backrest rotation axis. The second connection position is located behind and below the first connection position.

[0007] According to some embodiments of the present invention, the seat frame assembly includes an upper connecting area and a bottom connecting area. The upper connecting area is rotatably connected to the bottom of the backrest frame about the backrest rotation axis. The bottom connecting area is connected to the bottom of the upper connecting area through a transition flange that bends inward relative to the upper connecting area. The bottom connecting area is connected to the seat cushion frame at the first connecting position and the second connecting position, respectively.

[0008] According to some embodiments of the present invention, the bottom connecting region of the seat frame assembly is configured to extend downward from front to back at the bottom of the upper connecting region.

[0009] According to some embodiments of the present invention, in the seat frame assembly, the rear part of the seat cushion frame has an upwardly protruding connecting boss, the connecting boss is spaced apart from the rear end of the seat cushion frame and forms a clearance recess, at least a portion of the bottom connecting area extends to the clearance recess, the front part of the bottom connecting area is connected to the connecting boss at a first connecting position, and the rear part of the bottom connecting area is connected to the rear end of the seat cushion frame at a second connecting position.

[0010] According to some embodiments of the present invention, in the seat frame assembly, the lower connecting plate and the seat cushion frame are detachably connected at at least one of the first connecting positions via a first connector. And / or, the lower connecting plate is detachably connected to the seat cushion frame at at least one of the second connecting positions via a second connector.

[0011] According to some embodiments of the present invention, in the seat frame assembly, the height difference between the backrest rotation axis and the standard seating position point is h, and satisfies: 45mm≤h≤55mm.

[0012] According to some embodiments of the present invention, the seat frame assembly further includes a drive member and an adjuster. The bottom of the backrest frame is rotatably connected to the lower connecting plate via the adjuster. The drive member is poweredly connected to the adjuster to drive the backrest frame to rotate relative to the lower connecting plate via the adjuster.

[0013] According to some embodiments of the present utility model, the seat frame assembly includes a connecting rod, a bottom plate, and two connecting side plates. The two connecting side plates are spaced apart. The connecting rod is connected between the upper ends of the two connecting side plates, and the bottom plate is connected between the lower ends of the two connecting side plates, so as to jointly define the backrest installation space. The driving component is installed in the backrest mounting space, the connecting side plate is rotatably connected to the lower connecting plate through the angle adjuster, and the driving component is poweredly connected to the angle adjuster through a rotating shaft.

[0014] This utility model also proposes a vehicle.

[0015] The vehicle according to the present invention includes the seat frame assembly described in any of the above embodiments.

[0016] The vehicle and the aforementioned seat frame assembly have the same advantages over the prior art, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial structural diagram of the seat frame assembly according to an embodiment of the present utility model. Figure 1 ; Figure 2 This is a partial structural diagram of the seat frame assembly according to an embodiment of the present utility model. Figure 2 ; Figure 3 This is a partial structural schematic diagram of the seat cushion frame according to an embodiment of the present utility model; Figure 4 This is a structural schematic diagram of the lower connecting plate according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the seat frame assembly according to an embodiment of the present utility model. Figure 1 ; Figure 6 This is a schematic diagram of the seat frame assembly according to an embodiment of the present utility model. Figure 2 .

[0019] Figure label: Seat frame assembly 100, standard seating position 101. Backrest frame 1, connecting rod 11, base plate 12, clearance groove 121, connecting side plate 13, backrest mounting space 14, rotating shaft 15, driving component 16, angle adjuster 17, seat cushion frame 2, connecting boss 21, first connecting mating position 211, clearance notch 22, second connecting mating position 23. Lower connecting plate 3, upper connecting area 31, transition flange 32, bottom connecting area 33, first connecting position 331, second connecting position 332. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0024] The following is for reference. Figures 1-6The seat frame assembly 100 according to an embodiment of the present utility model has a simple structure, which can reduce the overall height of the seat frame assembly 100, reduce the space occupied, thereby improving weight reduction, and ensuring the riding comfort of the occupants, so as to improve the user experience.

[0025] like Figures 1-6 As shown, a seat frame assembly 100 according to an embodiment of the present invention includes: a backrest frame 1 and a seat cushion frame 2.

[0026] The seat cushion frame 2 has a lower connecting plate 3 at its rear. The bottom of the backrest frame 1 is rotatably connected to the lower connecting plate 3 around the backrest rotation axis. The seat cushion frame 2 has a standard seating position point 101 corresponding to the user at its top. There are at least two connection positions between the lower connecting plate 3 and the seat cushion frame 2. One of the two connection positions is located at the rear side, which is lower than the connection position located at the front side, and the backrest rotation axis is lower than the standard seating position point 101.

[0027] The seat frame assembly 100 includes a backrest frame 1 and a seat cushion frame 2, which are rotatably connected. The seat cushion frame 2 is located below the backrest frame 1, allowing occupants to sit on the seat cushion frame 2 and lean against the backrest frame 1. The backrest frame 1 can be angled according to the occupant's usage habits, and a height adjustment device can be installed on the seat cushion frame 2 to adjust the height of the seat frame assembly 100. This allows occupants to adjust the height of the seat frame assembly 100 according to their own conditions and habits to achieve a comfortable seating posture, meet different needs of occupants, and improve comfort and seating experience.

[0028] Specifically, the seat frame assembly 100 is provided with a backrest frame 1 and a seat cushion frame 2. In actual use, leather or cloth materials can be covered on the backrest frame 1 and the seat cushion frame 2 to improve the comfort of passengers. The bottom of the seat cushion frame 2 can be connected to the vehicle floor through a structure such as a sliding rail, so that the seat frame assembly 100 can be adjusted relative to the vehicle floor to meet the needs of different users.

[0029] The rear of the seat cushion frame 2 is provided with a lower connecting plate 3, and the bottom of the backrest frame 1 is rotatably connected to the lower connecting plate 3 around the backrest rotation axis. This allows the front of the backrest frame 1 and the top of the seat cushion frame 2 to define the occupant seating area, and allows the backrest frame 1 to rotate around the backrest rotation axis. That is, when the occupant needs to sit on the seat frame assembly 100, the backrest frame 1 can be adjusted to a position that is close to vertical or has a small angle with vertical relative to the seat cushion frame 2. When the occupant needs to lie down on the seat frame assembly 100, the backrest frame 1 can be adjusted to a position that is close to horizontal or has a small angle with horizontal relative to the seat cushion frame 2, so as to meet the different usage needs of the occupant and improve the seating comfort.

[0030] Furthermore, the lower connecting plate 3 and the seat cushion frame 2 can be connected by connectors or other means, and the lower connecting plate 3 and the seat cushion frame 2 have at least two connection positions, that is, the connection positions of the lower connecting plate 3 and the seat cushion frame 2 can be set to two, three or four, etc., thereby ensuring the reliability of the connection between the lower connecting plate 3 and the seat cushion frame 2. In this embodiment, the connection positions are set to two, and the two connection positions are distributed at intervals along the front-rear direction of the vehicle. The connection position located on the rear side of the two connection positions is set to be lower than the connection position located on the front side, that is, the connection position located on the front side of the lower connecting plate 3 and the seat cushion frame 2 is set to be higher than the connection position located on the rear side.

[0031] Thus, after the lower connecting plate 3 is installed on the seat cushion frame 2, it can be tilted backward and downward as a whole, thereby reducing the height of the upper end of the lower connecting plate 3 in the horizontal direction. This allows the highest point of the backrest frame 1 to move downward when it is installed on the lower connecting plate 3, thereby reducing the overall height of the seat frame assembly 100, reducing the space occupied, and improving lightweighting.

[0032] Furthermore, the upper part of the seat cushion frame 2 has a standard seating position point 101 corresponding to the user. The standard seating position point 101 is the standard sitting posture position of the driver or passenger during safety testing (such as crash testing), ergonomic design, or vehicle space measurement. It is usually set according to regulations (such as ISO 6549, SAE J1516). The backrest rotation axis is lower than the standard seating position point 101, so that when the backrest frame 1 is rotated to a position close to horizontal or with a small angle to the horizontal, the lower end of the backrest frame 1 is below the standard seating position point 101. In this way, it can avoid a gap between the backrest frame 1 and the seat cushion frame 2 when adjusted to a position close to horizontal or with a small angle to the horizontal, which would cause the occupant's back to be pushed upward, thereby improving the occupant's seating comfort and ensuring the occupant's user experience.

[0033] According to the embodiment of the present utility model, the seat frame assembly 100 reduces the overall height of the seat frame assembly 100 by setting one of the two connection positions located on the rear side to be lower than the connection position located on the front side, thereby reducing the space occupied, improving weight reduction, and making the backrest rotation axis lower than the standard seating position point 101, avoiding a gap between the backrest frame 1 and the seat cushion frame 2, improving the comfort of the occupant, and thus ensuring the user experience of the occupant. The structure is simple, the use effect is better, and the application range is wider.

[0034] In some embodiments, the connection position includes at least one first connection position 331 and at least one second connection position 332. The first connection position 331 is located in front of and below the backrest rotation axis, and the second connection position 332 is located in rear of and below the backrest rotation axis. The second connection position 332 is located behind and below the first connection position 331.

[0035] Specifically, the lower connecting plate 3 is provided with at least two connection positions, and as follows: Figure 4 As shown, the connection positions include at least one first connection position 331 and at least one second connection position 332. That is, the first connection position 331 can be set to one, two, or three, and the second connection position 332 can also be set to one, two, or three. The backrest frame 1 is rotatably connected to the lower connecting plate 3, and the backrest frame 1 can rotate around the backrest rotation axis. The first connection position 331 and the second connection position 332 are both located below the backrest rotation axis, and the projection of the backrest rotation axis in the vertical direction is located between the projections of the first connection position 331 and the second connection position 332 in the vertical direction.

[0036] Furthermore, the first connecting position 331 and the second connecting position 332 are spaced apart in the front-back direction. The first connecting position 331 is located in front of the second connecting position 332, such that the projection of the first connecting position 331 in the vertical direction is located in front of the projection of the backrest rotation axis in the vertical direction, and the projection of the second connecting position 332 in the vertical direction is located behind the projection of the backrest rotation axis in the vertical direction. The second connecting position 332 is set lower than the first connecting position 331.

[0037] In this way, the lower connecting plate 3 can be tilted backward and downward in the front-back direction, thereby reducing the height of the lower end of the backrest frame 1 that is rotatably connected to the lower connecting plate 3, so that the lower end of the backrest frame 1 can be located below the standard seating position 101, improving the seating comfort of the occupants.

[0038] In some embodiments, the lower connecting plate 3 includes an upper connecting region 31 and a bottom connecting region 33. The upper connecting region 31 is rotatably connected to the bottom of the backrest frame 1 about the backrest rotation axis. The bottom connecting region 33 is connected to the bottom of the upper connecting region 31 by a transition flange 32 that bends inward relative to the upper connecting region 31. The bottom connecting region 33 is connected to the seat cushion frame 2 at a first connecting position 331 and a second connecting position 332, respectively.

[0039] Specifically, such as Figure 4As shown, the lower connecting plate 3 is provided with an upper connecting area 31 and a bottom connecting area 33. The upper connecting area 31 and the bottom connecting area 33 are distributed in the vertical direction, and the upper connecting area 31 is located above the bottom connecting area 33. The bottom of the backrest frame 1 is rotatably connected to the upper part of the upper connecting area 31 around the backrest rotation axis. The lower part of the upper connecting area 31 is connected to the upper part of the bottom connecting area 33. The bottom connecting area 33 is connected to the seat cushion frame 2 at the first connecting position 331 and the second connecting position 332, respectively. Thus, the backrest frame 1 can be connected to the seat cushion frame 2 through the lower connecting plate 3 and can rotate relative to the seat cushion frame 2. There are multiple connection positions to ensure connection reliability.

[0040] Furthermore, a transition flange 32 is provided between the bottom of the upper connecting area 31 and the upper part of the bottom connecting area 33. The transition flange 32 is configured to bend inward, which can improve the connection strength between the bottom of the upper connecting area 31 and the upper part of the bottom connecting area 33, ensure the installation reliability of the backrest frame 1, and provide a buffer space between the bottom of the backrest frame 1 and the seat cushion frame 2, ensuring the reliability of the rotation of the backrest frame 1.

[0041] In some embodiments, the bottom connection region 33 is configured to extend downward from front to back at the bottom of the upper connection region 31.

[0042] Specifically, such as Figure 1 and Figure 4 As shown, the lower connecting plate 3 is provided with an upper connecting area 31 and a bottom connecting area 33 connected in the vertical direction. The bottom connecting area 33 is constructed to extend downward from front to back at the bottom of the upper connecting area 31, thereby reducing the height of the rear end of the bottom connecting area 33. The upper connecting area 31 is connected above the bottom connecting area 33, and the upper connecting area 31 is rotatably connected to the bottom of the backrest frame 1 around the backrest rotation axis.

[0043] This reduces the height of the backrest rotation axis, preventing the bottom of the backrest frame 1 from being higher than the seat cushion frame 2 when the backrest frame 1 is rotated to a position close to horizontal or with a small angle to the horizontal. This avoids a gap between the backrest frame 1 and the seat cushion frame 2, improving the passenger's riding comfort.

[0044] In some embodiments, the rear part of the seat frame 2 has an upwardly protruding connecting boss 21, the connecting boss 21 is spaced apart from the rear end of the seat frame 2 and forms a relief recess 22, at least a portion of the bottom connecting region 33 extends to the relief recess 22, the front part of the bottom connecting region 33 is connected to the connecting boss 21 at a first connecting position 331, and the rear part of the bottom connecting region 33 is connected to the rear end of the seat frame 2 at a second connecting position 332.

[0045] Specifically, the lower connecting plate 3 is connected to the seat cushion frame 2 at the first connecting position 331 and the second connecting position 332, and as shown... Figure 3 As shown, the seat cushion frame 2 has seat cushion side plates on both sides, and the lower connecting plate 3 can be connected to the seat cushion side plates. The rear part of the seat cushion side plates forms an upward protruding connecting boss 21. The connecting boss 21 is located on the front side of the rear end of the seat cushion frame 2 and is spaced apart from the rear end of the seat cushion frame 2. The connecting boss 21 is relatively high in the horizontal direction, so that the seat cushion frame 2 can form a recessed area on the front side of the connecting boss 21. When the passenger sits on the seat cushion frame 2, the recessed area can limit the passenger's buttocks and ensure the stability of the ride. Furthermore, an avoidance recess 22 is formed between the connecting boss 21 and the rear end of the seat cushion frame 2. The avoidance recess 22 is set to open upward.

[0046] Furthermore, at least a portion of the bottom connecting area 33 can extend to the clearance recess 22, that is, the bottom connecting area 33 can partially extend to the clearance recess 22, or the bottom connecting area 33 can extend entirely to the clearance recess 22. The connecting boss 21 is located above the rear end of the seat cushion frame 2 in the horizontal direction. The front part of the bottom connecting area 33 is connected to the connecting boss 21 at the first connecting position 331, and the rear part of the bottom connecting area 33 is connected to the rear end of the seat cushion frame 2 at the second connecting position 332, so that the first connecting position 331 is located above the second connecting position 332 in the horizontal direction, thereby causing the lower connecting plate 3 to be inclined downward from front to back to reduce the height of the backrest rotation axis.

[0047] Furthermore, the clearance recess 22 is set as a downward-recessed arc-shaped groove, and the transition flange 32 is also constructed as an arc-shaped flange. The transition flange 32 and the clearance recess 22 are set in correspondence. In this way, clearance can be made when the lower end of the backrest frame 1 rotates, avoiding interference with the backrest frame 1 and ensuring the reliability of the angle adjustment of the backrest frame 1.

[0048] In some embodiments, the lower connecting plate 3 and the seat cushion frame 2 are detachably connected at at least one first connection position 331 via a first connector, such as Figure 4 As shown, in this embodiment, the first connection position 331 is set as one and constructed as a first connection hole, as... Figure 3 As shown, the seat cushion frame 2 is provided with a first connecting position 211 and is constructed as a second connecting hole. A first connector can be sequentially inserted into the first connecting hole and the second connecting hole to detachably connect the lower connecting plate 3 and the seat cushion frame 2 at the first connecting position 331. The first connector can be constructed as a bolt, etc., which is simple in structure, convenient to install, and has low installation cost. In this way, if the lower connecting plate 3 is deformed, it can be disassembled and replaced, reducing maintenance costs.

[0049] In other embodiments, the lower connecting plate 3 and the seat cushion frame 2 are detachably connected at at least one second connection position 332 via a second connector, such as Figure 4 As shown, in this embodiment, the second connection position 332 is set as one and constructed as a third connection hole, as... Figure 3 As shown, the seat cushion frame 2 is provided with a second connecting position 23 and is constructed as a fourth connecting hole. A second connector can be sequentially inserted into the third and fourth connecting holes to detachably connect the lower connecting plate 3 and the seat cushion frame 2 at the second connecting position 332. The second connector can be constructed as a bolt, etc., which is simple in structure, convenient to install, and has low installation cost. In this way, if the lower connecting plate 3 is deformed, it can be disassembled and replaced, reducing maintenance costs.

[0050] In some embodiments, the height difference between the backrest rotation axis and the standard seating position 101 is h, and satisfies: 45mm≤h≤55mm.

[0051] Specifically, such as Figure 6 As shown, the upper part of the seat cushion frame 2 has a standard seating position point 101 corresponding to the occupant, that is, the position of the occupant's hips when the occupant sits on the seat frame assembly 100. The bottom of the backrest frame 1 can rotate around the backrest rotation axis, and the height difference between the backrest rotation axis and the standard seating position point 101 is set to h, and satisfies: 45mm≤h≤55mm. That is, the height difference h between the backrest rotation axis and the standard seating position point 101 can be set to 45mm, 46mm, 47mm, 48mm, 49mm, 50mm, 51mm, 52mm, 53mm, 54mm, 55mm, or any value between 45mm and 55mm. In this embodiment, the height difference h between the backrest rotation axis and the standard seating position point 101 is set to 50mm.

[0052] When the height difference between the backrest rotation axis and the standard seating position 101 is too small, the occupant's lower back will be pushed upwards when the backrest frame 1 rotates to a near-horizontal position, affecting the occupant's seating experience. Conversely, when the height difference between the backrest rotation axis and the standard seating position 101 is too large, the overall height of the seat frame assembly 100 will increase, affecting weight reduction. Therefore, setting the height difference h between the backrest rotation axis and the standard seating position 101 to satisfy 45mm ≤ h ≤ 55mm improves the occupant's seating experience while ensuring weight reduction.

[0053] In some embodiments, the seat frame assembly 100 further includes a drive member 16 and an adjuster 17. The bottom of the backrest frame 1 is rotatably connected to the lower connecting plate 3 via the adjuster 17. The drive member 16 is poweredly connected to the adjuster 17 to drive the backrest frame 1 to rotate relative to the lower connecting plate 3 via the adjuster 17.

[0054] Specifically, such as Figures 1-2 As shown, the seat frame assembly 100 also includes a drive unit 16 and an adjuster 17. The adjuster 17 is installed between the bottom of the backrest frame 1 and the lower connecting plate 3, and the bottom of the backrest frame 1 is rotatably connected to the lower connecting plate 3 via the adjuster 17, allowing the backrest frame 1 to adjust its angle relative to the seat cushion frame 2 to accommodate different seating needs of the occupants. The drive unit 16 can be configured as a drive motor, etc., and is poweredly connected to the adjuster 17, allowing the drive unit 16 to drive the adjuster 17 to rotate, thereby causing the backrest frame 1 to rotate as well. The adjuster 17 is circular, and the rotation axis of the backrest of the backrest frame 1 passes through the center of the adjuster 17 to ensure the stability of the rotation of the backrest frame 1.

[0055] In some embodiments, the backrest frame 1 includes a connecting rod 11, a base plate 12, and two connecting side plates 13. The two connecting side plates 13 are spaced apart. The connecting rod 11 is connected between the upper ends of the two connecting side plates 13, and the base plate 12 is connected between the lower ends of the two connecting side plates 13, so as to jointly define the backrest installation space 14. The driving member 16 is installed in the backrest installation space 14. The connecting side plates 13 are rotatably connected to the lower connecting plate 3 through an angle adjuster 17. The driving member 16 is poweredly connected to the angle adjuster 17 through a rotating shaft 15.

[0056] Specifically, such as Figure 5 As shown, the backrest frame 1 is provided with a connecting rod 11, a base plate 12, and two connecting side plates 13. The two connecting side plates 13 are distributed laterally along the vehicle. The connecting rod 11 is connected between the upper ends of the two connecting side plates 13, and the base plate 12 is connected between the lower ends of the two connecting side plates 13. The base plate 12 is constructed as an arc-shaped plate to avoid the seat cushion frame 2 when the backrest frame 1 rotates, ensuring the reliability of rotation. The connecting rod 11, the base plate 12, and the two connecting side plates 13 can jointly define the backrest installation space 14. The drive component 16 can be installed in the backrest installation space 14, thereby improving the integration of the seat frame assembly 100, reducing the space occupied by the seat frame assembly 100, and protecting the drive component 16.

[0057] In addition, the connecting side plate 13 can be rotatably connected to the lower connecting plate 3 via the angle adjuster 17, and the bottom plate 12 forms an avoidance groove 121, which is open upward. A rotating shaft 15 is provided in the avoidance groove 121. The driving member 16 is poweredly connected to the rotating shaft 15, and the rotating shaft 15 is poweredly connected to the angle adjuster 17. Thus, the driving member 16 can drive the angle adjuster 17 via the rotating shaft 15, so that the angle adjuster 17 drives the connecting side plate 13 to rotate, thereby allowing the backrest frame 1 to rotate relative to the seat cushion frame 2, ensuring the smoothness of the rotation process.

[0058] In actual settings, such as Figure 6 As shown, the middle rear part of the seat cushion frame 2 is recessed downwards, and the lower part of the backrest frame 1 is protruding upwards, which can conform to the physiological curve of the human body to support the occupant's waist and improve riding comfort.

[0059] This utility model also proposes a vehicle.

[0060] The vehicle according to the present invention includes a seat frame assembly 100 as described above.

[0061] The vehicle according to this utility model embodiment is provided with a seat frame assembly 100. The seat frame assembly 100 reduces the overall height of the seat frame assembly 100 by setting one of the two connection positions located on the rear side to be lower than the connection position located on the front side, thereby reducing the space occupied and improving weight reduction. It also makes the rotation axis of the backrest lower than the standard seating position point 101, avoiding a gap between the backrest frame 1 and the seat cushion frame 2, improving the comfort of the occupants, and thus ensuring the user experience of the occupants. The structure is simple, the use effect is better, and the application range is wider.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A seat frame assembly, characterized in that, include: Backrest frame (1); The seat frame (2) has a lower connecting plate (3) at its rear. The bottom of the backrest frame (1) is rotatably connected to the lower connecting plate (3) around the backrest rotation axis. The seat frame (2) has a standard seating position point (101) corresponding to the user at its top. The lower connecting plate (3) and the seat cushion frame (2) have at least two connection positions, wherein one of the two connection positions is located at the rear side and is lower than the connection position located at the front side, and the backrest rotation axis is lower than the standard seating position point (101).

2. The seat frame assembly according to claim 1, characterized in that, The connection position includes at least one first connection position (331) and at least one second connection position (332). The first connection position (331) is located in front of and below the rotation axis of the backrest, and the second connection position (332) is located in rear of and below the rotation axis of the backrest. The second connection position (332) is located behind and below the first connection position (331).

3. The seat frame assembly according to claim 2, characterized in that, The lower connecting plate (3) includes an upper connecting area (31) and a bottom connecting area (33). The upper connecting area (31) is rotatably connected to the bottom of the backrest frame (1) around the backrest rotation axis. The bottom connecting area (33) is connected to the bottom of the upper connecting area (31) by a transition flange (32) that bends inward relative to the upper connecting area (31). The bottom connecting area (33) is connected to the seat cushion frame (2) at the first connecting position (331) and the second connecting position (332), respectively.

4. The seat frame assembly according to claim 3, characterized in that, The bottom connecting region (33) is configured to extend downward from front to back at the bottom of the upper connecting region (31).

5. The seat frame assembly according to claim 3, characterized in that, The rear part of the seat frame (2) has an upwardly protruding connecting boss (21). The connecting boss (21) is spaced apart from the rear end of the seat frame (2) and forms a clearance recess (22). At least a portion of the bottom connecting area (33) extends to the clearance recess (22). The front part of the bottom connecting area (33) is connected to the connecting boss (21) at the first connecting position (331). The rear part of the bottom connecting area (33) is connected to the rear end of the seat frame (2) at the second connecting position (332).

6. The seat frame assembly according to claim 2, characterized in that, The lower connecting plate (3) and the seat cushion frame (2) are detachably connected at least at the first connecting position (331) by a first connector; And / or, the lower connecting plate (3) is detachably connected to the seat cushion frame (2) at at least one of the second connecting positions (332) via a second connector.

7. The seat frame assembly according to claim 1, characterized in that, The height difference between the backrest rotation axis and the standard seating position point (101) is h, and satisfies: 45mm≤h≤55mm.

8. The seat frame assembly according to claim 1, characterized in that, It also includes a drive unit (16) and an adjuster (17), the bottom of the backrest frame (1) is rotatably connected to the lower connecting plate (3) via the adjuster (17), the drive unit (16) is poweredly connected to the adjuster (17) to drive the backrest frame (1) to rotate relative to the lower connecting plate (3) via the adjuster (17).

9. The seat frame assembly according to claim 8, characterized in that, The backrest frame (1) includes a connecting rod (11), a base plate (12) and two connecting side plates (13). The two connecting side plates (13) are spaced apart. The connecting rod (11) is connected between the upper ends of the two connecting side plates (13) and the base plate (12) is connected between the lower ends of the two connecting side plates (13) to jointly define the backrest installation space (14). The drive unit (16) is installed in the backrest installation space (14), the connecting side plate (13) is rotatably connected to the lower connecting plate (3) through the angle adjuster (17), and the drive unit (16) is poweredly connected to the angle adjuster (17) through the rotating shaft (15).

10. A vehicle, characterized in that, Includes the seat frame assembly (100) according to any one of claims 1-9.

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