Car seat framework with large calf leg rest

Abstract

The utility model relates to an automobile seat framework of set big small leg leg support. The automobile seat framework includes cushion framework, cushion half basin, big leg leg support subassembly and small leg leg support subassembly, the cushion half basin rotatablely set up on the cushion framework, and located the upper end front side of cushion framework, big leg leg support subassembly rotatablely set up on the cushion framework, and with the fixed connection of cushion half basin, small leg leg support subassembly with the fixed connection of cushion half basin, and located the front end side of cushion framework. The scheme provided in the application can accommodate big leg leg support subassembly and small leg leg support subassembly simultaneously, meet the leg support demand of different passengers, thereby effectively relieving leg fatigue, effectively improve the practicability of automobile seat. At the same time, can make small leg leg support subassembly and cushion half basin always keep the state of close contact, ensure that the joint between small leg leg support and seat does not appear, greatly enhanced the comfort of riding, improved user experience.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to an automotive seat frame that integrates leg supports for the thighs and calves. Background Technology

[0002] Car seat leg rests are important components installed at the front of car seats, primarily used to provide support for the passenger's legs (lower legs or thighs). They are typically fixed to the car body via a bracket, and their frame can be folded for storage, ensuring stability during use and saving space when not in use. Car seat leg rests significantly reduce the pressure on the legs during long journeys, alleviating fatigue and allowing the passenger's body to relax more fully. They have now become one of the important indicators for measuring car seat comfort.

[0003] Currently, conventional car seats are limited by space and can only accommodate either calf or thigh leg rests, making it impossible to have both simultaneously and thus failing to meet the leg support needs of different passengers. Furthermore, the traditional installation method for calf leg rests often results in gaps at the connection point between the rest and the seat, which not only affects the overall aesthetics of the seat but also causes discomfort during seating, reducing the overall user experience.

[0004] Therefore, there is an urgent need to design a car seat frame that integrates thigh and calf support components, capable of accommodating both to meet the leg support needs of different passengers, thereby effectively relieving leg fatigue and significantly improving the practicality of the car seat. Simultaneously, it should ensure that the calf support component remains in close contact with the seat cushion, eliminating any seams between the calf support and the seat, greatly enhancing seating comfort and improving the user experience. Utility Model Content

[0005] To overcome the problems existing in related technologies, this application provides a car seat frame that integrates thigh and calf support components. This car seat frame can simultaneously accommodate thigh and calf support components, meeting the leg support needs of different passengers, thereby effectively relieving leg fatigue and significantly improving the practicality of the car seat. Simultaneously, it ensures that the calf support component remains in close contact with the seat cushion, preventing any seams between the calf support and the seat, greatly enhancing riding comfort and improving the user experience.

[0006] This application provides a car seat frame with integrated thigh and calf support, including a seat cushion frame, a thigh support assembly, a seat cushion half-basin, and a calf support assembly; the seat cushion half-basin is rotatably mounted on the seat cushion frame and located at the upper front side of the seat cushion frame; the thigh support assembly is rotatably mounted on the seat cushion frame and fixedly connected to the seat cushion half-basin for lifting the seat cushion half-basin; the calf support assembly is fixedly connected to the seat cushion half-basin and located at the front end of the seat cushion frame.

[0007] In a preferred embodiment of this application, the seat cushion frame includes a horizontal bar and a vertical mounting plate; two horizontal bars are arranged parallel to each other at the bottom end of the vertical mounting plate, and the extension direction of the horizontal bars is towards the left and right sides of the seat; two vertical mounting plates are symmetrically arranged at both ends of the horizontal bars, and are U-shaped with the horizontal bars as a whole, and the upper end of the vertical mounting plate is provided with a first mounting hole and a second mounting hole.

[0008] In a preferred embodiment of this application, the thigh support assembly includes a drive motor, a drive shaft, and a fixing block; the drive motor is disposed at one end of the drive shaft and is poweredly connected to the drive shaft; both ends of the drive shaft pass through the first mounting hole and are riveted to the seat cushion frame; the fixing block is fixedly disposed at both ends of the drive shaft, and the fixing block is provided with fastening through holes for connecting the seat cushion half basin.

[0009] In a preferred embodiment of this application, the seat cushion half-basin includes a mounting bracket, a supporting surface, and an opening; the rear end of the mounting bracket is provided with a mounting through hole corresponding to the second mounting hole, and the seat cushion half-basin is limited on the seat cushion frame by means of a bolt assembly passing through the second mounting hole and the mounting through hole; the supporting surface is disposed on the front end side of the mounting bracket and is fixedly connected to the mounting bracket for supporting the passenger's thigh; the opening is disposed between the supporting surface and the mounting bracket.

[0010] In a preferred embodiment of this application, the support surface includes a first support plate and a second support plate; the first support plate and the second support plate are arranged sequentially along the front-rear direction of the seat, and the second support surface is disposed at both ends of the first support surface and located at the opening; the first support plate is provided with a fastening hole adapted to the fastening through hole; the second support plate is provided with a connecting hole for connecting the lower leg support assembly.

[0011] In a preferred embodiment of this application, the calf support assembly includes a fixed bracket, a drive unit, and a support plate; the fixed bracket is connected to the half-basin of the seat cushion; the drive unit is disposed on the fixed bracket and is poweredly connected to the support plate, for driving the support plate to unfold or fold for storage; the support plate is disposed on the front end side of the fixed bracket and is hinged to the fixed bracket.

[0012] In a preferred embodiment of this application, a face mask tracking rod is also included; the face mask tracking rod is rotatably mounted on the calf support assembly and engages with the calf support assembly.

[0013] In a preferred embodiment of this application, the mask tracking rod includes a tube and a connector; the tube is U-shaped; the connectors are respectively disposed at both ends of the tube and are rotatably mounted on the fixed bracket.

[0014] In a preferred embodiment of this application, the fixed bracket is provided with a connecting groove; the connector is adapted to the connecting groove, is cylindrical in shape, and has protrusions at both ends, which are used to limit the connector on the fixed bracket.

[0015] The technical solution provided in this application has the following beneficial effects:

[0016] (1) The car seat frame with integrated thigh and calf support provided in this application includes a seat cushion frame, a seat cushion half-basin, a thigh support assembly, a calf support assembly, and a seat cover tracking rod. By setting the main parts of the thigh and calf support assemblies (i.e., the drive motor or drive unit that occupies a large space) in the area enclosed by the seat cushion frame and the seat cushion half-basin, and arranging them side by side along the left and right direction of the seat, the overall structure is very compact, thereby enabling the seat to accommodate both the thigh and calf support assemblies simultaneously. This effectively solves the problem that only a thigh or calf support assembly can be installed due to limited seat space, and effectively improves the practicality of the seat.

[0017] (2) By fixing both the thigh support assembly and the calf support assembly to the seat half basin with bolts, the calf support assembly and the seat half basin are always in close contact. Even if the thigh support is adjusted, there will be no gap between the calf support assembly and the seat half basin.

[0018] (3) By setting a rotatable ground cover tracking rod, the seat cover can “follow” the deformation requirements of the seat cover stretching when adjusting the leg rests, and transform the passive stretching of the seat cover into the active rotation adaptation of the tracking rod, thereby keeping the seat cover flat and preventing the seat cover from deforming, wrinkling and other problems caused by continuous stretching.

[0019] In summary, compared to existing technologies, the solution provided in this application can simultaneously accommodate both thigh and calf support components, meeting the leg support needs of different passengers, thereby effectively relieving leg fatigue and significantly improving the practicality of car seats. Simultaneously, it ensures that the calf support component remains in close contact with the seat cushion, eliminating any seams between the calf support and the seat, greatly enhancing seating comfort and improving the user experience.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0022] Figure 1 This is an exploded view of the car seat frame shown in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the structure of an automobile seat frame shown in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the seat cushion frame shown in the embodiments of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the half-basin cushion shown in the embodiments of this application;

[0026] Figure 5 This is a schematic diagram of the thigh support assembly shown in the embodiments of this application;

[0027] Figure 6 This is a schematic diagram of the calf support assembly shown in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of the structure of the mask tracking rod shown in the embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Seat cushion frame; 11. Horizontal bar; 12. Vertical mounting plate; 13. First mounting hole; 14. Second mounting hole; 2. Thigh support assembly; 21. Drive motor; 22. Drive shaft; 23. Fixing block; 231. Fastening through hole; 3. Seat cushion half basin; 31. Mounting bracket; 311. Mounting through hole; 32. Support surface; 321. First support plate; 3211. Fastening hole; 322. Second support plate; 3221. Connecting hole; 33. Opening; 4. Lower leg support assembly; 41. Fixing bracket; 411. Connecting through groove; 412. Connecting through hole; 42. Drive unit; 43. Support plate; 5. Face cover tracking rod; 51. Tube body; 52. Connector; 53. Protrusion. Detailed Implementation

[0031] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0032] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] Currently, conventional car seats are limited by space and can only accommodate either calf or thigh leg rests, making it impossible to have both simultaneously and thus failing to meet the leg support needs of different passengers. Furthermore, the traditional installation method for calf leg rests often results in gaps at the connection point between the rest and the seat, which not only affects the overall aesthetics of the seat but also causes discomfort during seating, reducing the overall user experience.

[0035] To address the aforementioned issues, this application provides a car seat frame that integrates thigh and calf support components. This frame can simultaneously accommodate both thigh and calf support components, meeting the leg support needs of different passengers and effectively alleviating leg fatigue, thus significantly improving the practicality of the car seat. Furthermore, it ensures that the calf support component remains in close contact with the seat cushion, eliminating any seams between the calf support and the seat, greatly enhancing seating comfort and improving the user experience.

[0036] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0037] Example

[0038] Please see Figures 1-7 The car seat frame integrating thigh and calf support of this application includes a seat cushion frame 1, a thigh leg support assembly 2, a seat cushion half-basin 3, and a calf leg support assembly 4. The seat cushion half-basin 3 is rotatably mounted on the seat cushion frame 1 and located at the upper front side of the seat cushion frame 1. The thigh leg support assembly 2 is rotatably mounted on the seat cushion frame 1 and fixedly connected to the seat cushion half-basin 3, used to lift the seat cushion half-basin 3. The calf leg support assembly 4 is fixedly connected to the seat cushion half-basin 3 and located at the front end of the seat cushion frame 1. Both the thigh leg support assembly 2 and the calf leg support assembly 4 can be independently adjusted to accommodate the leg support needs of different passengers.

[0039] Specifically, the seat cushion frame 1 is made of high-strength material to ensure a stable overall structure that is not easily deformed. For example, the seat cushion frame 1 includes a horizontal bar 11 and a vertical mounting plate 12; two horizontal bars 11 are arranged parallel to each other at the bottom end of the vertical mounting plate 12, and the extension direction of the horizontal bars 11 faces the left and right sides of the seat; two vertical mounting plates 12 are symmetrically arranged at both ends of the horizontal bars 11, and together with the horizontal bars 11, they form a U-shape, thereby forming a stable support structure. To facilitate connection with the seat cushion half-basin 3 and the thigh support assembly 2, the vertical mounting plate 12 is provided with a first mounting hole 13 and a second mounting hole 14, which are located at the upper end of the vertical mounting plate 12.

[0040] like Figure 5As shown, the thigh support assembly 2 includes a drive motor 21, a drive shaft 22, and a fixing block 23. The drive motor 21 is located at one end of the drive shaft 22 and is poweredly connected to the drive shaft 22. Both ends of the drive shaft 22 pass through the first mounting hole 13 and are riveted to the seat cushion frame 1. The fixing block 23 is fixedly located at both ends of the drive shaft 22 and is connected to the seat cushion half-basin 3. For example, the fixing block 23 is provided with fastening through holes 231, and several fastening through holes 231 are provided. The connection between the thigh support assembly 2 and the seat cushion half-basin 3 is realized by bolt assemblies passing through the fastening through holes 231 and the seat cushion half-basin 3. When a passenger needs better support for their thighs, they simply need to start the drive motor 21, causing it to rotate forward. This drives the drive shaft 22 to rotate along its central axis, which in turn drives the fixing block 23 to rotate along the central axis of the drive shaft 22. During this process, the height of the fixing block 23 continuously increases, effectively lifting the seat cushion half-basin 3 that is fixedly connected to it. This changes the angle and position of the thigh contact area with the seat, thus achieving the adjustment function of the thigh leg support.

[0041] The seat cushion half-basin 3 adopts an ergonomic design and mainly includes a mounting bracket 31, a support surface 32, and an opening 33. The mounting bracket 31 is rotatably mounted on the seat cushion frame 1. The support surface 32 is located on the front end of the mounting bracket 31 and is fixedly connected to it, supporting the passenger's thighs. The opening 33 is located between the support surface 32 and the mounting bracket 31, accommodating the thigh support assembly 2. Specifically, the rear end of the mounting bracket 31 has a mounting through hole 311 corresponding to the second mounting hole 14. A bolt assembly passes through the second mounting hole 14 and the mounting through hole 311, limiting the seat cushion half-basin 3 to the seat cushion frame 1. It should be noted that the bolt assembly here acts like the "axle" of a hinge, mainly serving a limiting connection function to ensure that the seat cushion half-basin 3 does not detach from the seat cushion frame 1, allowing the seat cushion half-basin 3 to rotate within a certain range around the bolt axis. This facilitates the thigh support assembly 2 in lifting the seat cushion half-basin 3, ensuring smooth and stable adjustment.

[0042] like Figure 4As shown, the support surface 32 includes a first support plate 321 and a second support plate 322. The first support plate 321 and the second support plate 322 are arranged sequentially along the front-rear direction of the seat, and the second support surface 32 is located at both ends of the first support surface 32 and at the opening 33. The first support plate 321 has a fastening hole 3211 that matches the fastening through hole 231. By passing a bolt assembly through the fastening through hole 231 and the fastening hole 3211, the thigh support assembly 2 is fixed to the seat cushion half basin 3. After fixing, the drive shaft 22 of the thigh support assembly 2 is located at the opening 33 and below the seat cushion half basin 3. By setting the opening 33, the overall structure becomes more compact.

[0043] The second support plate 322 is provided with a connection hole 3221 for connecting the calf support assembly 4. Specifically, the calf support assembly 4 includes a fixed bracket 41, a drive unit 42, and a support plate 43. The fixed bracket 41 is connected to the seat cushion half-basin 3. For example, the top of the fixed bracket 41 is provided with a connection through hole 412 corresponding to the connection hole 3221. The calf support assembly 4 is fixed to the seat cushion half-basin 3 by the bolt assembly passing through the connection hole 3221 and the connection through hole 412. The drive unit 42 is disposed on the fixed bracket 41 and is poweredly connected to the support plate 43 for driving the support plate 43 to unfold or fold for storage. It should be noted that the drive unit 42 adopts existing transmission structures such as motors, gears, and lead screws. It only needs to realize the function of pushing the support plate 43 to unfold or fold, which will not be elaborated here. Furthermore, when the drive motor 21 of the thigh leg support assembly 2 and the drive unit 42 are both fixed on the seat cushion half-basin 3, the drive unit 42 and the drive motor 21 are arranged side by side along the left and right direction of the seat below the seat cushion half-basin 3, making the overall structure very compact, thus allowing the seat to simultaneously accommodate the thigh leg support assembly 2 and the calf leg support assembly 4. The support plate 43 is made of a soft material and is located on the front end of the fixed bracket 41, and is hinged to the fixed bracket 41. When it is necessary to unfold the calf leg support assembly 4, simply activate the drive unit 42, which drives the support plate 43 to unfold forward until it is fully unfolded to the preset position to support the passenger's calf.

[0044] Because adjusting the position of the leg rests stretches the seat cover, causing it to deform, this application provides a seat frame with integrated leg rests that also includes a seat cover tracking rod 5. The tracking rod 5 is rotatably mounted on the lower leg rest assembly 4 and engages with it. For example, the tracking rod 5 includes a tube 51 and connectors 52. The tube 51 is generally U-shaped, and the connectors 52 are respectively located at both ends of the tube 51 and rotatably mounted on the fixed bracket 41. More specifically, the fixed bracket 41 has a connecting groove 411; the connectors 52 are adapted to the connecting groove 411, and both ends of the connectors 52 have protrusions 53, which limit the connectors 52 on the fixed bracket 41. In practical applications, the seat cover is hung on the tube 51 of the seat cover tracking rod 5, so that the tube 51 becomes the support for the seat cover in the leg area. When the leg rests are unfolded, the seat cover is stretched, and the seat cover tracking rod 5 rotates accordingly. The shape of its U-shaped tube 51 is adapted to the unfolding direction of the leg rests. By rotating itself, it "adapts" to the deformation requirements of the stretched seat cover, transforming the passive stretching of the seat cover into the active rotation adaptation of the tracking rod, thereby keeping the seat cover flat and preventing the seat cover from deforming, wrinkling, or other problems due to continuous stretching.

[0045] Working principle:

[0046] Installation steps: First, install the seat cushion frame 1 in the preset position of the car seat. Then, pass the drive shaft 22 of the thigh leg support assembly 2 through the first mounting hole 13 and rivet it to the seat cushion frame 1. Next, rotatably fix the mounting bracket 31 of the seat cushion half basin 3 in the second mounting hole 14 to connect the seat cushion half basin 3 with the seat cushion frame 1. Then, fix the thigh leg support assembly 2 on the seat cushion half basin 3 by passing the bolt assembly through the fastening through hole 231 and the fastening hole 3211. Next, insert the seat cover tracking rod 5 into the connecting through groove 411 of the fixing bracket 41, and fix the calf leg support assembly 4 on the seat cushion half basin 3 by passing the bolt assembly through the connecting hole 3221 and the connecting through hole. Finally, hang the seat cover to complete the installation.

[0047] Thigh support adjustment: Start the drive motor 21 to rotate clockwise, causing the drive shaft 22 to rotate along its central axis. This, in turn, causes the fixing block 23 to rotate along the central axis of the drive shaft 22. During this process, the height of the fixing block 23 continuously increases, effectively lifting the seat cushion half-basin 3 fixedly connected to it. This changes the angle and position of the thigh contacting the seat, thus achieving the thigh support adjustment function. When not needed, simply reverse the drive motor 21 to return the seat cushion half-basin 3 to its original position.

[0048] Lower leg support adjustment: Activate the drive unit 42 to make the motor of the drive unit 42 rotate forward, driving the support plate 43 to unfold forward until it is fully unfolded to the preset position to support the passenger's lower legs. When not needed, simply reverse the motor of the drive unit 42 to fold the support plate 43 back.

[0049] In this embodiment, the car seat frame integrating thigh and calf support provided by this application includes a seat cushion frame, a seat cushion half-basin, a thigh support assembly, a calf support assembly, and a seat cover tracking rod. By placing the main parts of the thigh and calf support assemblies (i.e., the space-consuming drive motor or drive unit) within the area enclosed by the seat cushion frame and the seat cushion half-basin, and arranging them side-by-side along the left-right direction of the seat, the overall structure is very compact. This allows the seat to simultaneously accommodate both the thigh and calf support assemblies, effectively solving the problem of limited seat space restricting the installation to either a thigh or calf support assembly, thus significantly improving the practicality of the seat. By fixing both the thigh and calf support assemblies to the seat cushion half-basin using bolt assemblies, the calf support assembly and the seat cushion half-basin always remain in close contact, ensuring no gaps appear between them even when the thigh support is adjusted. By incorporating a rotatable seat cover tracking rod, the system can adapt to the stretching deformation of the seat cover during thigh and calf support adjustments. This transforms the passive stretching of the seat cover into an active rotational adaptation of the tracking rod, maintaining the seat cover's flatness and preventing deformation and wrinkles caused by continuous stretching. Compared to existing technologies, the solution provided in this application can simultaneously accommodate both thigh and calf support components, meeting the leg support needs of different passengers and effectively alleviating leg fatigue, thus significantly improving the practicality of car seats. Furthermore, it ensures that the calf support component remains in close contact with the seat cushion, eliminating seams between the calf support and the seat, greatly enhancing seating comfort and improving the user experience.

[0050] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application 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 a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A car seat frame integrating leg rests for both upper and lower legs, characterized in that, It includes a seat frame (1), thigh support assembly (2), seat half basin (3), and calf support assembly (4); The seat cushion half-basin (3) is rotatably mounted on the seat cushion frame (1) and is located on the upper front side of the seat cushion frame (1). The thigh support assembly (2) is rotatably mounted on the seat frame (1) and fixedly connected to the seat half basin (3) for lifting the seat half basin (3). The lower leg support assembly (4) is fixedly connected to the seat cushion half basin (3) and is located on the front end side of the seat cushion frame (1).

2. The car seat frame with integrated leg supports for upper and lower legs according to claim 1, characterized in that, The seat cushion frame (1) includes a crossbar (11) and a vertical mounting plate (12); The two crossbars (11) are arranged parallel to each other at the bottom end of the vertical mounting plate (12), and the extension direction of the crossbars (11) is towards the left and right sides of the seat; The two vertical mounting plates (12) are symmetrically arranged at both ends of the horizontal bar (11) and form a U-shape with the horizontal bar (11). The upper end of the vertical mounting plate (12) is provided with a first mounting hole (13) and a second mounting hole (14).

3. The car seat frame with integrated leg supports for thighs and calves according to claim 2, characterized in that, The thigh support assembly (2) includes a drive motor (21), a drive shaft (22), and a fixing block (23); The drive motor (21) is located at one end of the drive shaft (22) and is poweredly connected to the drive shaft (22); The two ends of the drive shaft (22) pass through the first mounting hole (13) and are riveted to the seat frame (1); The fixing block (23) is fixedly installed at both ends of the drive shaft (22), and the fixing block (23) is provided with a fastening through hole (231) for connecting the seat half basin (3).

4. The car seat frame with integrated leg supports for thighs and calves according to claim 3, characterized in that, The seat cushion half basin (3) includes a mounting bracket (31), a support surface (32), and an opening (33); The rear end of the mounting bracket (31) is provided with a mounting through hole (311) corresponding to the second mounting hole (14). The seat half basin (3) is limited on the seat frame (1) by passing a bolt assembly through the second mounting hole (14) and the mounting through hole (311). The support surface (32) is disposed on the front end side of the mounting bracket (31) and is fixedly connected to the mounting bracket (31) for supporting the passenger's thighs; The opening (33) is located between the support surface (32) and the mounting bracket (31).

5. The car seat frame with integrated leg supports for thighs and calves according to claim 4, characterized in that, The support surface (32) includes a first support plate (321) and a second support plate (322); The first support plate (321) and the second support plate (322) are arranged sequentially along the front-back direction of the seat, and the second support plate (322) is arranged at both ends of the first support plate (321) and located at the opening (33); The first support plate (321) is provided with a fastening hole (3211) that is adapted to the fastening through hole (231); The second support plate (322) is provided with a connection hole (3221) for connecting the lower leg support assembly (4).

6. The car seat frame with integrated leg supports for upper and lower legs according to claim 1, characterized in that, The calf support assembly (4) includes a fixed bracket (41), a drive unit (42), and a support plate (43); The fixed bracket (41) is connected to the seat cushion half basin (3); The drive unit (42) is mounted on the fixed bracket (41) and is poweredly connected to the support plate (43) to drive the support plate (43) to unfold or fold for storage. The support plate (43) is disposed on the front end side of the fixed bracket (41) and is hinged to the fixed bracket (41).

7. The car seat frame with integrated leg supports for thighs and calves according to claim 6, characterized in that, It also includes a mask tracking rod (5); The face mask tracking rod (5) is rotatably mounted on the calf support assembly (4) and engages with the calf support assembly (4).

8. The car seat frame with integrated leg supports for thighs and calves according to claim 7, characterized in that, The mask tracking rod (5) includes a tube (51) and a connector (52); The tube body (51) is U-shaped in general; The connectors (52) are respectively disposed at both ends of the tube body (51) and are rotatably disposed on the fixed bracket (41).

9. The car seat frame with integrated leg supports for thighs and calves according to claim 8, characterized in that, The fixed bracket (41) is provided with a connecting through groove (411); The connector (52) is adapted to the connecting groove (411) and is cylindrical in shape. Both ends of the connector (52) are provided with protrusions (53), which are used to limit the connector (52) on the fixed bracket (41).

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