Seat frame structure

Abstract

The utility model provides a kind of seat framework structure, comprising: first support and second support;Back frame angle is adjustably arranged on first support and second support, the end of the first side of back frame is driven by first driving structure and is rotatably arranged on first support, the end of the second side of back frame is rotatably arranged on second support by first pivot structure, first driving structure drives the rotation of the first side of back frame to drive the synchronous rotation of the second side of back frame;Seat frame angle is adjustably arranged on first support and second support, the end of the first side of seat frame is rotatably arranged on first support by second pivot structure, the end of the second side of seat frame is driven by second driving structure and is rotatably arranged on second support, second driving structure drives the rotation of the second side of seat frame to drive the synchronous rotation of the first side of seat frame.The technical scheme of the application effectively solves the problem that the seat cushion and the backrest on the seat in the related art cannot be completely flattened.

Description

Technical Field

[0001] This utility model relates to the field of automotive seats, and more specifically, to a seat frame structure. Background Technology

[0002] The seat frame structure in related technologies is usually made of a metal frame, which includes a back frame and a seat frame. The back frame rotates relative to the seat frame to adjust the angle. However, when the back frame and the seat frame are adjusted, there is a large obtuse angle at the connection between them. When the seat cushion and backrest are placed on the positions corresponding to the seat frame and back frame, there is a step formed by partial stacking of the seat cushion and backrest after they are laid flat, resulting in a height difference and causing the seat cushion and backrest to not be able to be laid flat completely. Utility Model Content

[0003] The main purpose of this utility model is to provide a seat frame structure to solve the problem that the seat cushion and backrest of the seat in the related technology cannot be completely flat.

[0004] To achieve the above objectives, according to one aspect of the present invention, a seat frame structure is provided, comprising: a first support and a second support, the first support and the second support being spaced apart; a back frame, angle-adjustably mounted on the first support and the second support, the first end of the back frame being driven by a first driving structure to be rotatably mounted on the first support, the second end of the back frame being rotatably mounted on the second support via a first pivoting structure, the first driving structure driving the first side of the back frame to rotate so as to synchronously rotate the second side of the back frame, thereby adjusting the back frame to multiple first angular positions relative to the horizontal plane; and a seat frame, angle-adjustably mounted on the first support and the second support, the first end of the seat frame being rotatably mounted on the first support via a second pivoting structure, the second end of the seat frame being driven by a second driving structure to be rotatably mounted on the second support, the second driving structure driving the second side of the seat frame to rotate so as to synchronously rotate the first side of the seat frame, thereby adjusting the seat frame to multiple second angular positions relative to the horizontal plane.

[0005] Furthermore, both the first drive structure and the second drive structure include a first angle-adjusting motor and a first drive shaft drivenly connected to the first angle-adjusting motor, which are mounted on the back frame and the seat frame respectively. The first end of the back frame is drivenly connected to the first drive shaft of the first drive structure, and the second end of the seat frame is drivenly connected to the first drive shaft of the second drive structure.

[0006] Furthermore, a first rotating disk is rotatably mounted on the first bracket. The first rotating disk is driven by the first drive shaft of the first drive structure through a first spline structure. The first end of the back frame is connected to the first rotating disk. When the first drive shaft of the first drive structure rotates, it drives the first rotating disk to rotate, so that the first rotating disk drives the first end of the back frame to rotate.

[0007] Furthermore, a second rotating disk is rotatably mounted on the second bracket. The second rotating disk is driven by the first drive shaft of the second drive structure through a second spline structure. The second end of the seat frame is connected to the second rotating disk. When the first drive shaft of the second drive structure rotates, it drives the second rotating disk to rotate, so that the second rotating disk drives the second end of the seat frame to rotate.

[0008] Furthermore, the first pivot structure includes a first pivot disposed on the second bracket and a first pivot hole disposed on the end of the second side of the back frame, the first pivot hole being fitted onto the first pivot.

[0009] Furthermore, the second pivot structure includes a second pivot disposed on the first support and a second pivot hole disposed on the end of the first side of the seat frame, the second pivot hole being fitted onto the second pivot.

[0010] Furthermore, the seat frame structure also includes a headrest frame, which is adjustablely mounted on the back frame. The lower end of the headrest frame is driven by a third drive structure to rotate and is mounted on the top of the back frame. The third drive structure drives the lower end of the headrest frame to rotate synchronously, so that the headrest frame can be adjusted to multiple third angle positions relative to the back frame.

[0011] Furthermore, a third rotating disk is rotatably provided on the top of the back frame. The third drive structure includes a second angle-adjusting motor and a second drive shaft connected to the second angle-adjusting motor. The third rotating disk is driven by the second drive shaft through a third spline structure. The lower end of the pillow frame is connected to the third rotating disk. When the second drive shaft rotates, it drives the third rotating disk to rotate, so that the third rotating disk drives the lower end of the pillow frame to rotate.

[0012] Furthermore, the seat frame structure also includes a leg frame, which is adjustable on the seat frame. The upper end of the leg frame is driven by a fourth drive structure to rotate at the rear of the seat frame. The fourth drive structure drives the upper end of the leg frame to rotate synchronously, so that the leg frame can be adjusted to multiple fourth angle positions relative to the seat frame.

[0013] Furthermore, a fourth rotating disk is rotatably provided at the rear of the seat frame. The fourth drive structure includes a third angle-adjusting motor mounted on the leg frame and a third drive shaft driven and connected to the third angle-adjusting motor. The fourth rotating disk is driven and engaged with the third drive shaft through a fourth spline structure. The upper end of the leg frame is connected to the fourth rotating disk. When the third drive shaft rotates, it drives the fourth rotating disk to rotate, so that the fourth rotating disk drives the upper end of the leg frame to rotate.

[0014] The seat frame structure, utilizing the technical solution of this utility model, includes: a first support, a second support, a back frame, and a seat frame. The first support and the second support are spaced apart. The back frame is adjustablely mounted on the first and second supports. The first end of the back frame is rotatably mounted on the first support by a first driving structure, and the second end of the back frame is rotatably mounted on the second support via a first pivoting structure. The first driving structure drives the first side of the back frame to rotate, causing the second side of the back frame to rotate synchronously, thereby adjusting the back frame to multiple first angular positions relative to the horizontal plane. Thus, the angle of the back frame can be independently adjusted, allowing rotation within a range of 0 to 180 degrees. Similarly, the seat frame is adjustablely mounted on the first and second supports. The first end of the seat frame is rotatably mounted on the first support via a second pivoting structure, and the second end of the seat frame is rotatably mounted on the second support by a second driving structure. The second driving structure drives the second side of the seat frame to rotate, causing the first side of the seat frame to rotate synchronously, thereby adjusting the seat frame to multiple second angular positions relative to the horizontal plane. Thus, the angle of the seat frame can be independently adjusted, allowing rotation within a range of 0 to 180 degrees. The first and second drive structures operate independently, eliminating mutual constraints on the adjustment of the back frame and seat frame. The first drive structure and the first pivot structure work collaboratively in the adjustment of the back frame, with the first drive structure forming a drive joint and the first pivot structure forming a rotational joint. Similarly, the second drive structure and the second pivot structure also work collaboratively in the adjustment of the seat frame, with the second drive structure forming a drive joint and the second pivot structure forming a rotational joint, thus enabling the back frame and seat frame to move independently during adjustment. This collaborative action controls the flattening process of the seat cushion above the seat frame and the backrest above the back frame; that is, adjusting the first angle position of the back frame to 0 degrees or 180 degrees and the second angle position of the seat frame to 0 degrees or 180 degrees ensures that the seat cushion and backrest can be flattened independently without stacking, avoiding height differences and solving the problem of incomplete flattening. Therefore, the technical solution of this application effectively solves the problem of the seat cushion and backrest not being able to be completely flattened in related technologies. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A perspective structural schematic diagram of an embodiment of the seat frame structure according to the present invention is shown;

[0017] Figure 2 It shows Figure 1 An exploded structural diagram of the seat frame;

[0018] Figure 3 It shows Figure 1 An exploded structural diagram of the first drive structure and the first pivot structure of the back frame and headrest frame of the seat frame.

[0019] Figure 4 It shows Figure 1 An exploded structural diagram of the third drive structure of the back frame and headrest frame of the seat frame.

[0020] Figure 5 It shows Figure 1 An exploded structural diagram of the seat frame and leg frame at the second drive structure and the second pivot structure of the seat frame structure.

[0021] Figure 6 It shows Figure 1 An exploded structural diagram of the fourth drive structure of the seat frame and leg frame of the seat frame;

[0022] Figure 7 It shows Figure 1 A side view of the seat frame structure when in a forward-facing sitting position;

[0023] Figure 8 It shows Figure 1 A side view of the leg frame adjustment process of the seat frame structure;

[0024] Figure 9 It shows Figure 1 A side view of the headrest adjustment process of the seat frame structure;

[0025] Figure 10 It shows Figure 1 A side view of the seat frame structure in a zero-gravity posture;

[0026] Figure 11 It shows Figure 1 A side view of the seat frame structure in a rear-facing sitting position;

[0027] Figure 12 It shows Figure 1 A side view of the seat frame structure when it is in a flat position.

[0028] The above figures include the following reference numerals:

[0029] 11. First support; 111. First rotating disk; 112. First spline structure; 12. Second support; 121. Second rotating disk; 122. Second spline structure;

[0030] 20. Back frame; 21. First pivot hole; 22. Third rotating disk; 23. Third spline structure;

[0031] 31. First drive structure; 311. First angle-adjusting motor; 312. First drive shaft; 32. Second drive structure; 33. Third drive structure; 331. Second angle-adjusting motor; 332. Second drive shaft; 34. Fourth drive structure; 341. Third angle-adjusting motor; 342. Third drive shaft;

[0032] 41. First pivot structure; 411. First pivot; 42. Second pivot structure; 421. Second pivot; 50. Seat frame;

[0033] 51. Second pivot hole; 52. Fourth rotating disk; 53. Fourth spline structure;

[0034] 60. Pillow frame;

[0035] 70. Leg frame. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] According to one aspect of this application, a seat frame structure is provided, such as... Figures 1 to 12 As shown, an embodiment of the seat frame structure includes: a first support 11, a second support 12, a back frame 20, and a seat frame 50. The first support 11 and the second support 12 are spaced apart. The back frame 20 is angularly adjustable on the first support 11 and the second support 12. The first end of the back frame 20 is driven by a first drive structure 31 to be rotatably mounted on the first support 11, and the second end of the back frame 20 is rotatably mounted on the second support 12 via a first pivot structure 41. The first drive structure 31 drives the first side of the back frame 20 to rotate, thereby causing the second side of the back frame 20 to rotate synchronously, so that the back frame 20 can be adjusted to multiple first angular positions relative to the horizontal plane. The seat frame 50 is angularly adjustable on the first support 11 and the second support 12. The first end of the seat frame 50 is rotatably mounted on the first support 11 via the second pivot structure 42. The second end of the seat frame 50 is driven by the second drive structure 32 to be rotatably mounted on the second support 12. The second drive structure 32 drives the second side of the seat frame 50 to rotate so that the first side of the seat frame 50 rotates synchronously, so that the seat frame 50 can be adjusted to multiple second angle positions relative to the horizontal plane.

[0040] In the embodiment of the seat frame structure, the first drive structure 31 drives the first side of the back frame 20 to rotate, thereby causing the second side of the back frame 20 to rotate synchronously, so that the back frame 20 can be adjusted to multiple first angular positions relative to the horizontal plane. In this way, the angle of the back frame 20 can be adjusted independently, allowing it to rotate within a range of 0 to 180 degrees. The second drive structure 32 drives the second side of the seat frame 50 to rotate, thereby causing the first side of the seat frame 50 to rotate synchronously, so that the seat frame 50 can be adjusted to multiple second angular positions relative to the horizontal plane. In this way, the angle of the seat frame 50 can be adjusted independently, allowing it to rotate within a range of 0 to 180 degrees. The independent driving of the first drive structure 31 and the second drive structure 32 eliminates the mutual constraint between the adjustment of the back frame 20 and the seat frame 50. The first drive structure 31 and the first pivot structure 41 work together in the adjustment of the back frame 20, wherein the first drive structure 31 forms a drive joint and the first pivot structure 41 forms a rotational joint. Similarly, the second drive structure 32 and the second pivot structure 42 also work together in the adjustment of the seat frame 50, wherein the second drive structure 32 also forms a drive joint and the second pivot structure 42 also forms a rotational joint, realizing the respective movements of the back frame and the seat frame during adjustment. This synergistic effect can control the flattening process of the seat cushion above the seat frame 50 and the backrest above the back frame 20, that is, adjusting the first angle position of the back frame 20 to 0 degrees or 180 degrees and the second angle position of the seat frame 50 to 0 degrees or 180 degrees, ensuring that the seat cushion and the backrest can be flattened respectively, without stacking between the seat cushion and the backrest, avoiding the formation of a height difference, and solving the problem of not being able to flatten completely. Therefore, the technical solution of the embodiment of the seat frame structure effectively solves the problem of the seat cushion and backrest on the seat not being able to flatten completely in the related art.

[0041] like Figures 1 to 4 As shown, both the first drive structure 31 and the second drive structure 32 include a first angle-adjusting motor 311 mounted on the back frame 20 and the seat frame 50, and a first drive shaft 312 drivenly connected to the first angle-adjusting motor 311. The first end of the back frame 20 is drivenly connected to the first drive shaft 312 of the first drive structure 31, and the second end of the seat frame 50 is drivenly connected to the first drive shaft 312 of the second drive structure 32. Both the first drive structure 31 and the second drive structure 32 achieve independent and precise adjustment of the angles of the back frame 20 and the seat frame 50 by using the combination of the first angle-adjusting motor 311 and the first drive shaft 312. The first drive shaft 312, as a transmission medium, can efficiently and accurately transmit the power of the first angle-adjusting motor 311 to the back frame 20 and the seat frame 50, controlling them to adjust to various angles from a forward-facing sitting posture to a flat posture, thus solving the problem of limited adjustment range of the back frame and seat frame.

[0042] like Figures 1 to 4As shown, a first rotating disk 111 is rotatably mounted on the first bracket 11. The first rotating disk 111 is connected to the first drive shaft 312 of the first drive structure 31 via a first spline structure 112. The first end of the back frame 20 is connected to the first rotating disk 111. When the first drive shaft 312 of the first drive structure 31 rotates, it drives the first rotating disk 111 to rotate, thereby causing the first end of the back frame 20 to rotate. The use of the first spline structure 112 ensures a stable and uninterrupted rotational connection between the back frame 20 and the first bracket 11. Driven by the first drive shaft 312, the first rotating disk 111 can rotate smoothly and precisely, thereby enabling the first end of the back frame 20 to adjust its angle without jamming or excessive wear, ensuring the smoothness and comfort of the back frame under various first angle position adjustments.

[0043] like Figures 1 to 5 As shown, a second rotating disk 121 is rotatably mounted on the second support 12. The second rotating disk 121 is connected to the first drive shaft 312 of the second drive structure 32 via a second spline structure 122. The second end of the seat frame 50 is connected to the second rotating disk 121. When the first drive shaft 312 of the second drive structure 32 rotates, it drives the second rotating disk 121 to rotate, thereby causing the second end of the seat frame 50 to rotate. The second spline structure 122 also provides a stable rotational connection between the seat frame 50 and the second support 12. Driven by the second drive shaft 332, the second rotating disk 121 can rotate smoothly, adjusting the angle of the second end of the seat frame 50. This ensures the balance and consistency of the seat frame during adjustment, especially when synchronized with the back frame to a flat position, preventing the formation of steps between the seat cushion and the backrest to avoid height differences.

[0044] like Figures 1 to 4 As shown, the first pivot structure 41 includes a first pivot 411 disposed on the second bracket 12 and a first pivot hole 21 disposed on the second side end of the back frame 20. The first pivot hole 21 is fitted onto the first pivot 411. The configuration of the first pivot structure 41 enables the back frame 20 to rotate freely relative to the seat frame 50. The cooperation between the first pivot 411 and the first pivot hole 21 ensures that the back frame can rotate smoothly around the first pivot during adjustment. Even when the maximum adjustment angle is reached, the connection between the back frame and the second bracket 12 remains stable, avoiding stiffness or damage at the connection.

[0045] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the second pivot structure 42 includes a second pivot 421 disposed on the first bracket 11 and a second pivot hole 51 disposed on the first side end of the seat frame 50. The second pivot hole 51 is fitted onto the second pivot 421. The second pivot structure 42 ensures the free rotational movement of the seat frame 50. The combination of the second pivot 421 and the second pivot hole 51 allows the seat frame to rotate around the second pivot. This design ensures that the second side end of the seat frame can rotate synchronously with the first side end, thereby avoiding the formation of a height difference and uneven steps between the seat cushion above the seat frame and the backrest above the backrest frame in the flat or zero-gravity posture, thus improving the comfort and versatility of the seat.

[0046] like Figures 1 to 4 As shown, the seat frame structure also includes a headrest frame 60, which is angle-adjustably mounted on the backrest frame 20. The lower end of the headrest frame 60 is driven by a third drive structure 33 to rotate and be mounted on top of the backrest frame 20. The third drive structure 33 drives the lower end of the headrest frame 60 to rotate synchronously, allowing the headrest frame 60 to be adjusted to multiple third angle positions relative to the backrest frame 20. The introduction of the third drive structure 33 allows the headrest frame 60 to be adjusted independently relative to the backrest frame 20, meeting the personalized needs of passengers of different body types for the headrest area. Especially for application scenarios requiring a "completely flat" state (i.e., a 180-degree angle between each pair of the headrest frame 60, backrest frame 20, and seat frame 50), the adjustment of the headrest frame can coordinate with the angle changes of the backrest frame and seat frame, avoiding discomfort between the head area and the backrest frame, and further improving the comfort and ergonomics of the seat in the flat state.

[0047] like Figures 1 to 4 As shown, a third rotating disk 22 is rotatably mounted on the top of the back frame 20. The third drive structure 33 includes a second angle-adjusting motor 331 mounted on the pillow frame 60 and a second drive shaft 332 driven by the second angle-adjusting motor 331. The third rotating disk 22 is driven by the second drive shaft 332 through a third spline structure 23. The lower end of the pillow frame 60 is connected to the third rotating disk 22. When the second drive shaft 332 rotates, it drives the third rotating disk 22 to rotate, thereby causing the lower end of the pillow frame 60 to rotate. Through the combination of the second angle-adjusting motor 331 and the second drive shaft 332, and the matching of the third rotating disk 22 and the third spline structure 23, precise adjustment of the pillow frame 60 relative to the back frame 20 is achieved. This motor-driven adjustment method ensures that the headrest area can be quickly adjusted to multiple third-angle positions according to the occupant's comfort needs without affecting the overall flat position of the back frame and seat frame. This provides more personalized and ergonomic headrest support when the seat frame 60, back frame 20, and seat frame 50 are at 180 degrees to each other. "Completely flat" means that the seat frame structure is in a flat position.

[0048] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the seat frame structure also includes a leg frame 70, which is angle-adjustably mounted on the seat frame 50. The upper end of the leg frame 70 is driven by a fourth drive structure 34 to rotate at the rear of the seat frame 50. The fourth drive structure 34 drives the upper end of the leg frame 70 to rotate synchronously, allowing the leg frame 70 to be adjusted to multiple fourth angle positions relative to the seat frame 50. The adjustability of the leg frame 70 angle is achieved through the fourth drive structure 34, ensuring the flexibility and comfort of the passenger's leg support. When the seat frame is adjusted to the "fully flat" mode (i.e., the headrest frame 60, backrest frame 20, and seat frame 50 are 180 degrees apart) or the "zero gravity" mode (the knees and heart are on the same horizontal plane, and the back and thighs form an angle of less than 120 degrees), the leg frame can be independently adjusted according to the passenger's leg needs, avoiding discomfort caused by improper matching between the leg frame and the seat frame, and further optimizing the ergonomic design of the seat in the flat state. "Zero gravity" means that the seat frame structure is in a zero-gravity posture.

[0049] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a fourth rotating disk 52 is rotatably mounted at the rear of the seat frame 50. The fourth drive structure 34 includes a third angle-adjusting motor 341 mounted on the leg frame 70 and a third drive shaft 342 driven by the third angle-adjusting motor 341. The fourth rotating disk 52 is driven by the third drive shaft 342 through a fourth spline structure 53. The upper end of the leg frame 70 is connected to the fourth rotating disk 52. When the third drive shaft 342 rotates, it drives the fourth rotating disk 52 to rotate, thereby causing the fourth rotating disk 52 to drive the upper end of the leg frame 70 to rotate. The drive mechanism of the third angle-adjusting motor 341 and the third drive shaft 342, combined with the transmission cooperation between the fourth spline structure 53 and the fourth rotating disk 52, ensures a stable connection and angle adjustment between the leg frame 70 and the rear of the seat frame 50. This design is particularly useful in "zero gravity" scenarios (where the knees and heart are on the same level and the back and thighs form an angle of less than 120 degrees), providing passengers with a natural and relaxed support angle for their feet, reducing leg pressure and improving the riding experience. At the same time, the independent adjustment capability of the leg frame also reduces the height difference between the leg frame and the seat frame, making the seat flatter when folded down, further demonstrating the versatility and adaptability of the seat frame structure.

[0050] like Figures 7 to 12As shown, the back frame, seat frame, headrest frame, and leg frame of the seat frame structure in this embodiment are all adjustable, greatly enhancing the personalized angle needs of passengers of different body types for different areas of the seat, thereby improving seating comfort. The seat can achieve a 180° large angle adjustment, expanding the feasibility of interaction between the seat and the vehicle in multiple scenarios (such as: parent-child sitting scenarios, zero-gravity scenarios, outdoor viewing scenarios, travel bed scenarios, etc.), and the convenience of integration and scenario interaction.

[0051] Both the first and second pivoting structures are connected to their respective second and first supports via bushings. In this embodiment, the first, second, and third angle-adjusting motors are all installed using bolts and limit springs.

[0052] The operating principles of the back frame, seat frame, pillow frame, and leg frame in this embodiment are as follows:

[0053] The leg frame angle is adjusted by a third angle-adjusting motor driving a third drive shaft, which in turn drives a fourth rotating disk to rotate around the axis of the fourth rotating disk.

[0054] The pillow frame angle is adjusted by a second angle-adjusting motor driving a second drive shaft, which in turn drives a third rotating disk to rotate around the third rotating disk.

[0055] The backrest angle is adjusted by the first angle adjustment motor of the first drive structure driving the first drive shaft of the first drive structure, so that the first drive shaft drives the first rotating disk to rotate around the first rotating disk; the seat frame angle is adjusted by the first angle adjustment motor of the second drive structure driving the first drive shaft of the second drive structure, so that the first drive shaft drives the second rotating disk to rotate around the second rotating disk; the leg frame angle is adjusted by the third angle adjustment motor driving the third drive shaft, so that the third drive shaft drives the fourth rotating disk to rotate around the axis of the fourth rotating disk, so that the seat frame structure is in a zero-gravity posture.

[0056] The back frame is rotated 90°. The angle of the back frame is adjusted by the first angle adjustment motor of the first drive structure driving the first drive shaft of the first drive structure, so that the first drive shaft drives the first rotating disk to rotate around the first rotating disk.

[0057] The seat frame rotates 90°. The seat frame angle is adjusted by the first angle adjustment motor of the second drive structure driving the first drive shaft of the second drive structure, so that the first drive shaft drives the second rotating disk to rotate around the second rotating disk.

[0058] The leg frame rotates 90°. The leg frame angle is adjusted by the third angle adjustment motor driving the third drive shaft, so that the third drive shaft drives the fourth rotating disk to rotate around the axis of the fourth rotating disk.

[0059] The pillow frame rotates 90°. The pillow frame angle is adjusted by the second angle adjustment motor driving the second drive shaft, which in turn drives the third rotating disk to rotate around the third rotating disk.

[0060] Back frame, seat frame, pillow frame, and leg frame fully flattened at 180°: After the seat frame and back frame are fully flattened at 180°, the pillow frame angle is adjusted by the second angle adjustment motor driving the second drive shaft, which in turn drives the third rotating disk to rotate around the third rotating disk; the leg frame angle is adjusted by the third angle adjustment motor driving the third drive shaft, which in turn drives the fourth rotating disk to rotate around the axis of the fourth rotating disk.

[0061] The seat frame structure can also be customized to suit different vehicle scenarios, allowing for individual adjustments of each seat angle (e.g., rear reclining mode, queen-like passenger seat mode, nap mode, etc.). This seat frame structure, via a central rotation point, can be arranged in both forward and backward directions simultaneously. This design minimizes limitations on the seat frame's adjustment range, resulting in a wide range of adjustments and enabling multi-functional adjustments.

[0062] The angle adjustment motor and rotating plate are part of the seat frame structure, which in turn drive the movement of each part to realize the overall unfolding movement of the seat, meeting the needs of seat posture adjustment in different scenarios, and are suitable for front and rear seats of car seats.

[0063] In the description of this utility model, it should be understood that "multiple" means a quantity of two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0064] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0066] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A seat frame structure, characterized in that, include: A first support (11) and a second support (12) are provided at intervals; The back frame (20) is angle-adjustably mounted on the first bracket (11) and the second bracket (12). The first end of the back frame (20) is driven by the first driving structure (31) to be rotatably mounted on the first bracket (11). The second end of the back frame (20) is rotatably mounted on the second bracket (12) via the first pivot structure (41). The first driving structure (31) drives the first side of the back frame (20) to rotate so that the second side of the back frame (20) rotates synchronously, so that the back frame (20) can be adjusted to multiple first angle positions relative to the horizontal plane. A seat frame (50) is angularly adjustable on the first support (11) and the second support (12). The first end of the seat frame (50) is rotatably mounted on the first support (11) via a second pivot structure (42). The second end of the seat frame (50) is driven by a second drive structure (32) to be rotatably mounted on the second support (12). The second drive structure (32) drives the second side of the seat frame (50) to rotate so that the first side of the seat frame (50) rotates synchronously, so that the seat frame (50) can be adjusted to multiple second angular positions relative to the horizontal plane.

2. The seat frame structure according to claim 1, characterized in that, Both the first drive structure (31) and the second drive structure (32) include a first angle adjustment motor (311) and a first drive shaft (312) drivenly connected to the first angle adjustment motor (311) and the seat frame (50), respectively. The end of the first side of the back frame (20) is drivenly connected to the first drive shaft (312) of the first drive structure (31), and the end of the second side of the seat frame (50) is drivenly connected to the first drive shaft (312) of the second drive structure (32).

3. The seat frame structure according to claim 2, characterized in that, The first bracket (11) is rotatably provided with a first rotating disk (111). The first rotating disk (111) is connected to the first drive shaft (312) of the first drive structure (31) via a first spline structure (112). The end of the first side of the back frame (20) is connected to the first rotating disk (111). When the first drive shaft (312) of the first drive structure (31) rotates, it drives the first rotating disk (111) to rotate, so that the first rotating disk (111) drives the end of the first side of the back frame (20) to rotate.

4. The seat frame structure according to claim 2, characterized in that, The second bracket (12) is rotatably provided with a second rotating disk (121). The second rotating disk (121) is connected to the first drive shaft (312) of the second drive structure (32) through a second spline structure (122). The end of the second side of the seat frame (50) is connected to the second rotating disk (121). When the first drive shaft (312) of the second drive structure (32) rotates, it drives the second rotating disk (121) to rotate, so that the second rotating disk (121) drives the end of the second side of the seat frame (50) to rotate.

5. The seat frame structure according to claim 1, characterized in that, The first pivot structure (41) includes a first pivot (411) disposed on the second bracket (12) and a first pivot hole (21) disposed on the end of the second side of the back frame (20), the first pivot hole (21) being sleeved on the first pivot (411).

6. The seat frame structure according to claim 1, characterized in that, The second pivot structure (42) includes a second pivot (421) disposed on the first bracket (11) and a second pivot hole (51) disposed on the end of the first side of the seat frame (50), the second pivot hole (51) being sleeved on the second pivot (421).

7. The seat frame structure according to claim 1, characterized in that, The seat frame structure also includes a pillow frame (60), which is angle-adjustably mounted on the back frame (20). The lower end of the pillow frame (60) is driven by a third drive structure (33) to rotate and be mounted on the top of the back frame (20). The third drive structure (33) drives the lower end of the pillow frame (60) to rotate, thereby causing the pillow frame (60) to rotate synchronously, so that the pillow frame (60) can be adjusted to multiple third angle positions relative to the back frame (20).

8. The seat frame structure according to claim 7, characterized in that, The top of the back frame (20) is rotatably provided with a third rotating disk (22). The third driving structure (33) includes a second angle-adjusting motor (331) disposed on the pillow frame (60) and a second driving shaft (332) drivenly connected to the second angle-adjusting motor (331). The third rotating disk (22) is driven by the second driving shaft (332) through a third spline structure (23). The lower end of the pillow frame (60) is connected to the third rotating disk (22). When the second driving shaft (332) rotates, it drives the third rotating disk (22) to rotate, so that the third rotating disk (22) drives the lower end of the pillow frame (60) to rotate.

9. The seat frame structure according to claim 1, characterized in that, The seat frame structure also includes a leg frame (70), which is angle-adjustably mounted on the seat frame (50). The upper end of the leg frame (70) is driven by a fourth drive structure (34) to rotate at the rear of the seat frame (50). The fourth drive structure (34) drives the upper end of the leg frame (70) to rotate, thereby causing the leg frame (70) to rotate synchronously, so that the leg frame (70) can be adjusted to multiple fourth angle positions relative to the seat frame (50).

10. The seat frame structure according to claim 9, characterized in that, The rear of the seat frame (50) is rotatably provided with a fourth rotating disk (52). The fourth driving structure (34) includes a third angle-adjusting motor (341) mounted on the leg frame (70) and a third driving shaft (342) driven by the third angle-adjusting motor (341). The fourth rotating disk (52) is driven by the third driving shaft (342) through a fourth spline structure (53). The upper end of the leg frame (70) is connected to the fourth rotating disk (52). When the third driving shaft (342) rotates, it drives the fourth rotating disk (52) to rotate, so that the fourth rotating disk (52) drives the upper end of the leg frame (70) to rotate.

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