Seat cushion framework, automobile seat and automobile

Abstract

The invention provides a seat cushion framework, an automobile seat and an automobile, the seat cushion framework comprises side plates arranged on the left side and the right side respectively, each side plate is arranged on an automobile body floor through a supporting assembly, and a first cavity is defined by each side supporting assembly and the side plate on the same side; a first seat cushion cross beam and a second seat cushion cross beam which are arranged in the front-back direction of the whole vehicle at intervals are arranged between the two side plates, an installation assembly used for installing a leg support assembly is arranged between the first seat cushion cross beam and the second seat cushion cross beam, and the two ends of the second seat cushion cross beam extend into the first cavities in the corresponding sides respectively. The seat cushion framework not only has high structural strength, but also facilitates improvement of light weight, so that the seat cushion framework can have good bearing performance and use effect, the problem that the seat cushion framework is difficult to keep good bearing performance when a leg support is assembled is solved, and the comfort of passengers and the quality of a whole vehicle are improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a seat cushion frame. Furthermore, this invention also relates to an automotive seat equipped with the seat cushion frame, and an automotive vehicle equipped with the automotive seat. Background Technology

[0002] Car seats are the main components supporting the bodies of drivers and passengers. Their primary function is to bear the weight of passengers and provide support for their bodies. Furthermore, with the development of the automotive industry and the continuous improvement of people's requirements for the driving and riding experience, car seats not only need to meet the requirements of seating and decoration, but also are related to the comfort and safety of passengers. For example, more and more vehicle models are equipped with leg rests on the seat cushions, the main function of which is to increase the leg support area of ​​passengers, relieve leg fatigue, and improve riding comfort.

[0003] As an important load-bearing structure in car seats, the seat cushion frame typically includes two side plates arranged opposite each other, multiple seat cushion crossbeams located between the two side plates, and support plates located at the bottom of each side plate. However, in the existing technology, the seat cushion frame still has the problem of insufficient overall strength when the leg rest is installed, making it difficult to maintain good load-bearing performance under the premise of installing the leg rest, which is not conducive to improving the quality of car seats. Summary of the Invention

[0004] In view of this, the present invention aims to provide a seat frame with better load-bearing performance.

[0005] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0006] A seat cushion frame includes side plates disposed on the left and right sides, each side plate being mounted on the vehicle floor by a support assembly, and a first cavity being formed between the support assembly and the side plate on the same side.

[0007] A first seat cushion crossbeam and a second seat cushion crossbeam are provided between the two side plates and arranged at intervals along the front-rear direction of the vehicle. A mounting assembly for mounting the leg support assembly is provided between the first seat cushion crossbeam and the second seat cushion crossbeam, and the two ends of the second seat cushion crossbeam extend into the first cavity on the corresponding side.

[0008] Furthermore, the support assembly includes a first support plate and a second support plate arranged at intervals along the front-rear direction of the vehicle, and the first cavity on each side is formed between the first support plate and the side plate on the same side; a third seat cushion crossbeam is provided between the side plates on both sides, and along the front-rear direction of the vehicle, the third seat crossbeam is located behind the second seat cushion crossbeam, and the two ends of the third seat crossbeam are respectively connected to the second support plate and the side plate on the corresponding side.

[0009] Furthermore, a second cavity is formed between each of the second support plates and the side plate on the same side, and both ends of the third seat beam pass through the second cavity on the corresponding side.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] The seat cushion frame of the present invention, through the cooperation of the mounting components, the first seat cushion crossbeam, the second seat cushion crossbeam and the two side plates, can form multiple force transmission ring structures to improve the overall structural strength of the seat cushion frame. At the same time, the two ends of the second seat cushion crossbeam extend into the cavity on the same side, which not only uses the cavity to improve the connection strength between the second seat cushion crossbeam and the side plate, but also cooperates with the adjacent force transmission rings to dissipate vibration energy and reduce noise transmission, but also achieves a weight reduction effect, which is conducive to improving lightweight design. Thus, the seat cushion frame has good load-bearing performance and good performance.

[0012] Furthermore, the two ends of the third seat crossbeam are connected to the corresponding second support plate and side plate, which helps to improve the structural strength of the connection points at both ends of the third seat crossbeam. The third seat crossbeam also forms multiple force transmission rings with the first seat crossbeam, the second seat crossbeam, and the second support plate. Combined with the force transmission rings formed between the first support plate, the second support plate, and the side plate, this effectively improves the structural strength of the seat frame. Each second support plate and the side plate on the same side form a second cavity. Both ends of the third seat crossbeam pass through the corresponding second cavity, utilizing the strong structural features of the cavity to further enhance the connection strength at both ends of the third seat crossbeam.

[0013] Furthermore, another object of the present invention is to provide an automobile seat comprising the seat cushion frame as described above.

[0014] Furthermore, it also includes a leg support assembly; the leg support assembly includes a base frame connected to the mounting assembly, a drive mechanism disposed on the base frame, and a leg support mounting bracket driven by the drive mechanism; under the drive mechanism, the leg support mounting bracket can rotate outward around the first seat cushion crossbeam to support the legs of the passenger.

[0015] Furthermore, the drive mechanism includes a linkage assembly disposed between the base frame and the leg support mounting, and a drive unit disposed on the base frame, the drive unit being drivably connected to the linkage assembly.

[0016] Furthermore, the linkage assembly consists of two sets arranged in a one-to-one correspondence with each of the side plates. The two sets of linkage assemblies are connected by a stabilizer bar assembly, and the drive end of the drive unit is connected to the stabilizer bar assembly.

[0017] Furthermore, the drive unit is connected to the stabilizer bar assembly via a lead screw drive assembly; and / or, the mounting assembly includes two mounting plates disposed on the left and right sides, the base frame includes two first brackets and a second bracket connected between the two first brackets, each first bracket is connected to each mounting plate in a corresponding manner, and the drive unit is disposed on the second bracket.

[0018] Furthermore, a pre-hanging structure is provided between the base frame and the mounting assembly, the pre-hanging structure being used to pre-hang the base frame onto the mounting assembly.

[0019] In addition, another object of the present invention is to provide an automobile in which the above-mentioned automobile seat is provided.

[0020] The car seat and the seat cushion frame described in this invention have high structural strength, provide high load-bearing capacity, and are conducive to lightweight design, which can help improve the overall quality of the vehicle.

[0021] Secondly, the leg rest assembly, and the fact that the leg rest mounting bracket can rotate outward around the first seat cushion crossbeam under the drive mechanism, supports the occupant's legs, thus improving the comfort of the car seat. The linkage assembly facilitates the rotation of the leg rest mounting bracket and provides high support performance. The stabilizer bar assembly between the two linkage assemblies enhances the stability of the linkage assembly, further supporting the leg rest mounting bracket.

[0022] Meanwhile, the drive unit and stabilizer bar assembly are connected via a lead screw drive assembly, which facilitates the conversion of rotational motion into linear motion. This not only improves the flexibility of drive unit layout and installation but also enhances transmission accuracy and stability. The mounting assembly includes two mounting plates that form multiple force transmission rings with each seat crossbeam and side plate, thereby increasing the structural strength of the seat frame. The base frame includes a first bracket that corresponds to each mounting plate, improving the installation stability of the leg support assembly. The pre-mounted structure enhances the ease of installation of the leg support assembly. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the seat cushion frame according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure shown in the image from another perspective;

[0026] Figure 3 for Figure 1 The diagram shows the structure without the leg support assembly.

[0027] Figure 4 This is a schematic diagram of the structure of the first cavity according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the second cavity according to an embodiment of the present invention;

[0029] Figure 6 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 7 This is a schematic diagram of the mounting plate according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the first support described in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the assembly of the first bracket and the mounting plate according to an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the car seat according to an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the leg support assembly described in an embodiment of the present invention;

[0035] Figure 12 and Figure 13 for Figure 11 A schematic diagram of the structure shown in other perspectives;

[0036] Explanation of reference numerals in the attached figures:

[0037] 10. Seat cushion; 11. Side panel; 12. First support plate; 13. Second support plate; 14. First cavity; 15. Second cavity; 16. Mounting plate; 161. Hook hole; 1611. Insertion part; 1612. Limiting part; 17. Connecting plate;

[0038] 21. First support beam; 22. Second support beam; 23. Third support beam;

[0039] 30. Leg support assembly; 31. Base frame; 311. First bracket; 3111. Hook; 31111. Connecting part; 31112. Hooking part; 312. Second bracket; 32. Drive mechanism; 321. Link assembly; 3211. First link; 3212. Second link; 3213. Third link; 3214. Fourth link; 322. Drive unit; 323. Stabilizer assembly; 3231. First stabilizer; 3232. Second stabilizer; 3233. Third stabilizer; 324. Screw drive assembly; 3241. Screw; 3242. Mounting bracket; 33. Leg support mounting bracket;

[0040] 41. Slide rail; 42. Sliding seat;

[0041] 50. Seat backrest. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0043] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0044] In the description of this invention, it should be noted that the use of terms such as "upper," "lower," "inner," and "outer," indicating orientation or positional relationship, is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description. It does 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 the invention. Furthermore, the use of terms such as "first" and "second" is also for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Taking the vehicle in which the seat frame described in this invention is located as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vehicle's vertical direction (also known as the height direction, or the Z-direction of the entire vehicle), horizontal direction (also known as the width direction, or the Y-direction of the entire vehicle), and front-back direction (also known as the length direction, or the X-direction of the entire vehicle). "Inner" and "outer" are defined based on the outline of the corresponding component. For example, "inner" and "outer" are defined based on the vehicle outline, with the side of the vehicle outline closer to the middle of the vehicle being "inner," and the opposite being "outer."

[0046] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" 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 invention in light of the specific circumstances.

[0047] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0048] Example 1

[0049] This embodiment relates to a seat cushion frame, which helps to solve the problems of insufficient structural strength and low load-bearing capacity of traditional seat cushion frames after the leg rest is assembled, thereby improving the quality of car seats and the overall quality of the vehicle.

[0050] In terms of overall structure, such as Figures 1 to 5 As shown, the seat cushion frame of this embodiment includes side plates 11 disposed on the left and right sides. Each side plate 11 is disposed on the vehicle floor by a support assembly, and a first cavity 14 is formed between each side support assembly and the side plate 11 on the same side.

[0051] A first seat cushion crossbeam 21 and a second seat cushion crossbeam 22 are provided between the two side panels 11 and arranged at intervals along the front-rear direction of the vehicle. A mounting assembly for mounting the leg support assembly 30 is provided between the first seat cushion crossbeam 21 and the second seat cushion crossbeam 22, and the two ends of the second seat cushion crossbeam 22 extend into the first cavity 14 on the corresponding side.

[0052] At this point, with the above configuration, multiple force transmission ring structures can be formed through the cooperation between the mounting components, the first seat cushion crossbeam 21, the second seat cushion crossbeam 22, and the two side plates 11, thereby improving the overall structural strength of the seat cushion frame. Meanwhile, the two ends of the second seat cushion crossbeam 22 extend into the cavity on the same side, which not only enhances the connection strength between the second seat cushion crossbeam 22 and the side plate 11 by utilizing the cavity, but also helps to dissipate vibration energy and reduce noise transmission in cooperation with the adjacent force transmission rings, thus achieving a weight reduction effect and contributing to lightweighting.

[0053] Based on the above overview, in this embodiment, specifically, in practical implementation, the first seat cushion crossbeam 21 can be the front crossbeam of the seat cushion, and the second seat cushion crossbeam 22 can be the middle crossbeam of the seat cushion. The left and right ends of the first seat cushion crossbeam 21 can be connected to the corresponding side plates 11 via connecting plates 17. To improve the connection effect between the first seat cushion crossbeam 21 and the connecting plates 17 on each side, it is preferable to set the first seat cushion crossbeam 21 to a U-shape in overall visual appearance, so that there is a larger connection area between the first seat cushion crossbeam 21 and the connecting plates 17 on each side, thereby ensuring the installation reliability of the first seat cushion crossbeam 21.

[0054] Also see Figure 3 As shown, the plurality of force transmission rings in this embodiment include at least a first force transmission ring formed between the two side connecting plates 17, the two side plates 11, the first seat cushion crossbeam 21 and the second seat cushion crossbeam 22; two second force transmission rings formed between the mounting assembly and the two side connecting plates 17, the two side plates 11, the first seat cushion crossbeam 21 and the second seat cushion crossbeam 22; a third force transmission ring formed between the two side connecting plates 17, the two side plates 11, the first seat cushion crossbeam 21, the support assembly and the vehicle floor; and a fourth force transmission ring formed between the two side connecting plates 17, the two side plates 11, the second seat cushion crossbeam 22 and the vehicle floor. The first force transmission ring, each of the second force transmission rings, the third force transmission ring and the fourth force transmission ring cooperate with each other, which is more conducive to dissipating vibration energy, mitigating noise transmission, and improving the structural performance of the seat cushion frame, thereby helping to improve the quality of the car seat.

[0055] In this embodiment, as a preferred implementation, it is still as follows: Figure 1 , Figure 4 and Figure 5 As shown, the support assembly includes a first support plate 12 and a second support plate 13 arranged at intervals along the front-rear direction of the vehicle. First cavities 14 are formed between the first support plate 12 and the side plate 11 on the same side. A third seat cushion crossbeam 23 is provided between the two side plates 11. Along the front-rear direction of the vehicle, the third seat crossbeam is located behind the second seat cushion crossbeam 22, and both ends of the third seat crossbeam are connected to the second support plate 13 and the side plate 11 on the corresponding side, respectively.

[0056] Here, it can be understood that by connecting the two ends of the third seat crossbeam to the corresponding second support plate 13 and side plate 11, the structural strength of the connection positions at both ends of the third seat crossbeam is improved. Furthermore, the setting of the third seat crossbeam can also form multiple force transmission rings with the first seat crossbeam, the second seat crossbeam, and each of the second support plates 13. Combined with the force transmission rings formed between each of the first support plates 12 and the vehicle floor, the second support plate 13 on the same side, and the side plate 11 on the same side, the structural strength of the seat frame can be effectively improved.

[0057] In this specific structure, the third seat cushion crossbeam 23 can be the rear crossbeam of the seat cushion. Force transmission rings are formed between the third seat cushion crossbeam 23 and the second seat cushion crossbeam 22, the two side plates 11, the third seat cushion crossbeam 23 and the two side plates 11, the two side connecting plates 17, the first seat cushion crossbeam 21, the third seat cushion crossbeam 23 and the two side plates 11, the two side second support plates 13, the third seat cushion crossbeam 23 and the two side plates 11, the two side first support plates 12, and the first support plate 12 and the second support plate 13, the side plate 11 on the same side, and the vehicle floor. These multiple force transmission rings cooperate with each other, which helps improve the overall structural performance of the seat cushion frame, thus making it easier to configure leg rests and improve the comfort of the car seat.

[0058] In this embodiment, the first seat crossbeam 21, the second seat crossbeam 22, and the third seat crossbeam 23 can all be made of tubing. The main advantage of this arrangement is that it can improve the structural strength of the first seat crossbeam 21, the second seat crossbeam 22, and the third seat crossbeam 23, which is conducive to increasing the connection area between each seat crossbeam and the side plates 11, improving the connection strength, and achieving a lightweight design.

[0059] Furthermore, in this embodiment, as a preferred implementation, it is still as follows: Figure 5 As shown, a second cavity 15 is formed between each second support plate 13 and the side plate 11 on the same side, and both ends of the third seat crossbeam 23 pass through the corresponding second cavity 15. This arrangement can take advantage of the strong cavity structure to further improve the connection strength at both ends of the third seat crossbeam and reduce sound noise transmission.

[0060] It should be mentioned that the first support plate 12 and the second support plate 13 are both located inside the side plate 11 on the same side. The two ends of the second seat cushion crossbeam 22 pass through the first support plate 12 on the same side and extend into the corresponding first cavity 14, so as to ensure the connection strength of the two ends of the second seat cushion crossbeam 22 while achieving a lightweight design.

[0061] The two ends of the third seat cushion crossbeam 23 first pass through the second support plate 13 and the second cavity 15 on the corresponding side, and then pass through the side plate 11 on the corresponding side. The main advantage of this arrangement is that it can take advantage of the high strength of the cavity structure to improve the strength of the connection position of the third seat cushion crossbeam 23. It can also be combined with the fact that the two ends of the third seat cushion crossbeam 23 are connected to the second support plate 13 and the side plate 11 on the corresponding side, so that the strength of the connection position of the two ends of the third seat cushion crossbeam 23 is further improved.

[0062] Figure 5The dotted line portion refers to the portion where, when a second cavity 15 is formed between each second support plate 13 and the side plate 11 on the same side, the portion where each second support plate 13 is connected to the third seat beam 23 can preferably be arranged with a U-shaped cross section so that each second support plate 13 is fastened to the side plate 11 on the same side, thereby forming the second cavity 15.

[0063] Moreover, in this embodiment, in addition to passing through the second cavity 15 on the corresponding side and being connected to the second support plate 13 and the side plate 11 on the corresponding side, the two ends of the third seat beam 23 can also be connected in the same way as the two ends of the second seat beam 22. That is, the two ends of the third seat beam 23 are connected to the second support plate 13 on the corresponding side and extend into the second cavity 15 on the corresponding side, so as to achieve weight reduction design while ensuring the strength of the connection position.

[0064] Secondly, in this embodiment, both ends of the second seat cushion crossbeam 22 can also pass through the first cavity 14 on the corresponding side, and be connected to the first support plate 12 and the side plate 11 on the corresponding side to achieve better connection strength. At this time, the portions of each first support plate 12 and the second seat cushion crossbeam 22 are preferably configured with a U-shaped cross section, so that each first support plate 12 and the side plate 11 on the same side can be fastened together to form the first cavity 14.

[0065] In specific implementation, the side plate 11 of this embodiment can preferably be configured as U-shaped to give it better structural strength. Moreover, each side plate 11 can preferably be provided with a reinforcing portion protruding towards the inside or outside of the vehicle to further enhance its structural strength.

[0066] In addition, in this embodiment, as a preferred implementation, it is still as follows Figures 1 to 5 As shown, in this embodiment, each support component is slidably mounted on the vehicle floor via a slide rail assembly, which facilitates the adjustment of the seat cushion frame's position in the front-to-back direction of the vehicle, thereby facilitating the adjustment of the car seat's front-to-back position.

[0067] Specifically, each slide rail assembly extends along the front-rear direction of the vehicle, and each slide rail assembly includes a slide rail 41 mounted on the vehicle floor and a sliding seat 42 slidably mounted on the slide rail 41. Each support assembly is mounted on the sliding seat 42 on the same side via bolt assemblies. At this time, the force transmission ring formed between each of the first support plates 12 and the vehicle floor, the second support plate 13 on the same side, and the side plate 11 on the same side is formed as the force transmission ring formed between each of the first support plates 12 and the slide rail assembly on the same side, the second support plate 13 on the same side, and the side plate 11 on the same side.

[0068] For any structures not mentioned in the slide rail assembly of this embodiment, refer to the structures in slide rail 41 mechanism products well known to those skilled in the art, and will not be described in detail here. In this embodiment, each first support plate 12 has a first transverse connecting flange at its bottom, and each second support plate 13 has a second transverse connecting flange at its bottom. Each first transverse connecting flange and each second transverse connecting flange are connected to the sliding seat 42 by bolts, which can ensure the reliability of the connection and also realize the convenience of assembling and disassembling each first support plate 12 and each second support plate 13.

[0069] Furthermore, if necessary, in this embodiment, weight-reducing holes or reinforcing protrusions can be provided on each of the first support plates 12 or each of the second support plates 13 to improve the lightweight and structural strength of each support plate. The arrangement of the weight-reducing holes or reinforcing protrusions can be set and adjusted according to the actual lightweight or structural strengthening requirements, which will not be elaborated here.

[0070] In this embodiment, the first support plate 12, the second support plate 13, and the side plate 11 on each side can preferably be made of sheet metal to ensure the structural stability of the seat cushion frame, giving the seat cushion frame good durability and resistance to deformation. Using sheet metal also facilitates the processing and installation of the first support plate 12, the second support plate 13, and the side plate 11 on each side, which helps to meet the mechanical performance requirements of the seat cushion frame, especially the leg support assembly 30, ensuring the safety and comfort of the seat cushion 10. Specifically, each support plate and each side plate 11 can preferably be integrally molded.

[0071] In addition to the above, regarding the specific material selection, the seat cushion frame in this embodiment can also use metal materials such as aluminum alloy and steel. These materials have good mechanical properties, which can meet the strength and rigidity requirements of the seat cushion frame, while also having good machinability and cost-effectiveness. By using these metal materials, the durability and reliability of the seat cushion frame can be ensured, improving the overall performance and service life of the seat cushion 10.

[0072] The seat cushion frame of this embodiment can be configured by cooperating with components such as the mounting components, the first seat cushion crossbeam 21, the second seat cushion crossbeam 22, the third seat cushion crossbeam 23, the side slide rail components, the side connecting plates 17, and the side side plates 11 to form multiple force transmission ring structures, thereby improving the overall structural strength of the seat cushion frame. At the same time, it can also improve the connection strength at both ends of the second seat cushion crossbeam 22 and the third seat cushion crossbeam 23. In cooperation with the adjacent force transmission rings, it is beneficial to dissipate vibration energy and achieve weight reduction, which is conducive to improving lightweight design. As a result, the seat cushion frame has good load-bearing performance and good performance.

[0073] Example 2

[0074] This embodiment relates to a car seat, which includes the seat cushion frame of Embodiment 1. This car seat, based on the seat cushion frame of Embodiment 1, can have high structural strength and provide high load-bearing capacity, and is particularly suitable for vehicles equipped with leg rests.

[0075] In this embodiment, specifically, in addition to the aforementioned seat cushion frame, the car seat also includes a leg support assembly 30. Furthermore, the car seat of this embodiment is as follows: Figure 10 As shown, the seat has a seat cushion 10 and a seat back 50, and a leg support assembly 30 provided on the seat cushion 10. Specifically, the leg support assembly 30 is connected to the seat cushion frame in the seat cushion 10.

[0076] It should be noted that, Figure 10 The left leg support assembly 30 is in a supported state, while the right leg support assembly 30 is in a retracted state. Any structural components not mentioned in this embodiment of the car seat can be referenced from various structures in seat products well-known to those skilled in the art, such as the ability of the seat back 50 to rotate relative to the seat cushion 10, and the adjustable position of the headrest at the top of the seat back 50 in the vertical direction of the vehicle. These will not be elaborated upon here.

[0077] At this time, as described in Embodiment 1, the seat frame has excellent structural performance based on the multiple force transmission ring structure formed between the mounting components, the first seat beam 21, the second seat beam 22, the third seat beam 23, the first support plates 12 on both sides, the second support plates 13 on both sides, and the side plates 11 on both sides, which is conducive to meeting the addition of such as the leg support assembly 30.

[0078] In one preferred embodiment, the leg support assembly 30 includes a base frame 31 connected to a mounting component, a drive mechanism 32 mounted on the base frame 31, and a leg support mounting bracket 33 driven by the drive mechanism 32. Driven by the drive mechanism 32, the leg support mounting bracket 33 can rotate outwards around the first seat cushion crossbeam 21, that is, rotate outwards around the front side of the seat cushion frame, to support the legs of the passenger.

[0079] Here, through the setting of the leg support assembly 30, and driven by the drive mechanism 32, the leg support mounting bracket 33 can rotate outward around the first seat cushion crossbeam 21 to support the legs of the passenger, relieve leg fatigue, and improve the riding comfort of the car seat.

[0080] It's worth noting that the traditional leg rest structure is located at the front of the seat cushion 10, primarily functioning to increase the leg support area for occupants, alleviate leg fatigue, and improve seating comfort. Currently, traditional leg rest structures are mostly used in high-end models, employing an integrated structure with the seat cushion 10. The position and angle of the leg rest are pre-set and cannot be adjusted according to the passenger's wishes or comfort level. This results in existing leg rest structures having drawbacks such as the inability to adjust the leg support angle, failing to achieve optimal comfort, and not fully covering the target audience. Furthermore, when there is no need for leg rests, they can occupy leg movement space, which is detrimental to improving the overall quality of the vehicle.

[0081] The leg support assembly 30 of this embodiment is designed to solve the above-mentioned problems. It not only has high support strength but also allows for adjustment of the support angle within a certain range, providing occupants with better comfort. In specific implementations, as a preferred embodiment, such as... Figures 11 to 13 As shown, the drive mechanism 32 includes a linkage assembly 321 disposed between the base frame 31 and the leg support mounting, and a drive unit 322 disposed on the base frame 31, the drive unit 322 being drivenly connected to the linkage assembly 321.

[0082] The main advantage of this setup is that the linkage assembly 321 can be used to meet the flipping requirements of the leg support mounting bracket 33, especially the support requirements when flipped to any angle, and it has a high support performance for the leg support mounting bracket 33.

[0083] Among them, as a preferred configuration, it remains as follows Figure 12 and Figure 13 As shown, the linkage assembly 321 of this embodiment includes a first linkage 3211, a second linkage 3212, a third linkage 3213, and a fourth linkage 3214. Specifically, one end of the first linkage 3211 is hinged to the base frame 31, and the other end of the first linkage 3211 is hinged to one end of the second linkage 3212. The other end of the second linkage 3212 is hinged to the leg support mounting bracket 33. One end of the third linkage 3213 is hinged to the base frame 31, and the other end of the third linkage 3213 is hinged to one end of the fourth linkage 3214. The other end of the fourth linkage 3214 is hinged to the leg support mounting bracket 33, and the middle portion of the second linkage 3212 is hinged to the middle portion of the third linkage 3213.

[0084] This allows for a four-bar linkage mechanism that can be infinitely adjusted to meet the leg support needs of passengers at any angle. When not in use, it can be retracted to the lower part of the seat cushion 10 without affecting legroom. This solves the problems of traditional leg rest structures being unable to be adjusted and occupying legroom when not in use, and also provides good reliability.

[0085] Of course, in this embodiment, the above-mentioned linkage assembly 321 is only a preferred embodiment. In addition to adopting the above-mentioned structural form, a four-bar linkage structure well known to those skilled in the art can also be used to achieve the same transmission purpose. However, in terms of usage effect, the linkage assembly 321 of this embodiment is simpler and more practical. The materials that can be used for the components such as the first linkage 3211, the second linkage 3212, the third linkage 3213, and the fourth linkage 3214 in this embodiment include stainless steel 304, high carbon steel, medium carbon structural steel, medium carbon alloy structural steel, boron steel, microalloyed non-quenched and tempered steel, rare earth magnesium ductile iron, pearlitic malleable cast iron, iron-based powder metallurgy, and copper-based powder metallurgy.

[0086] Among them, the connecting rod assembly 321 made of 304 stainless steel has excellent corrosion resistance and aesthetics, which helps to improve appearance and durability. The connecting rod assembly 321 made of high carbon steel has higher hardness and strength, and is especially suitable for heavy load applications. The connecting rod assembly 321 made of medium carbon structural steel, medium carbon alloy structural steel or boron steel has higher mechanical properties. The connecting rod assembly 321 made of microalloyed non-quenched and tempered steel has good overall performance.

[0087] Meanwhile, the connecting rod assembly 321, made of rare earth magnesium ductile iron or pearlitic malleable cast iron, has moderate hardness and good resistance to bending fatigue. The connecting rod assembly 321, made of iron-based powder metallurgy or copper-based powder metallurgy, has excellent wear reduction and wear resistance, and the raw materials are inexpensive, the process is simplified, and the cost is low.

[0088] Furthermore, in this embodiment, as a preferred implementation, combined with Figure 1 , Figure 6 and Figure 11 As shown, the mounting assembly includes two mounting plates 16 disposed on the left and right sides, the base frame 31 includes two first brackets 311 and a second bracket 312 connected between the two first brackets 311, each first bracket 311 is connected to each mounting plate 16 in a one-to-one correspondence, and the drive unit 322 is disposed on the second bracket 312.

[0089] The mounting assembly includes two mounting plates 16, which can form multiple force transmission rings with each seat crossbeam and each side plate 11 to improve the structural strength of the seat frame. The base frame 31 includes a first bracket 311 that is connected to each mounting plate 16 in a one-to-one manner, which helps to improve the installation stability of the leg support assembly 30.

[0090] The aforementioned mounting plate 16 preferably has arc-shaped connecting sections at both ends in the front-rear direction of the vehicle. Each end of the mounting plate 16 is connected to the corresponding side seat cushion crossbeam through the connecting section. Specifically, the connecting section at the rear end of the mounting plate 16 is connected to the second seat cushion crossbeam 22, and the connecting section at the front end of the mounting plate 16 is connected to the first seat cushion crossbeam 21. This is to improve the connection strength between each mounting plate 16 and the first seat cushion crossbeam 21 and the second seat cushion crossbeam 22, thereby improving the installation stability of the leg support assembly 30.

[0091] In this embodiment, in addition to the two mounting plates 16, the mounting components can also be set and adjusted according to the actual installation requirements of the leg support assembly 30. For example, it includes three or four mounting plates arranged at intervals along the left and right direction of the vehicle. The mounting plates 16 on both sides are connected to the first bracket 311 on the corresponding side, and the mounting plate 16 in the middle can be connected to the second bracket 312 to ensure that the leg support assembly 30 has higher installation stability.

[0092] Meanwhile, as a preferred embodiment, the linkage assembly 321 consists of two sets arranged in a one-to-one correspondence with each side plate 11. The two sets of linkage assemblies 321 are connected by a stabilizer bar assembly 323, and the drive end of the drive unit 322 is connected to the stabilizer bar assembly 323. The advantage of this arrangement is that it not only helps to improve the stability of the linkage assembly 321, thus helping to meet the support requirements of the leg support mounting bracket 33, but also facilitates the drive of the stabilizer bar assembly 323 by the drive unit 322.

[0093] In this embodiment, as a preferred implementation, see [reference needed]. Figure 11 As shown, the stabilizer bar assembly 323 preferably includes a first stabilizer bar 3231, a second stabilizer bar 3232, and a third stabilizer bar 3233. The first stabilizer bar 3231 is connected between the first connecting rods 3211 on both sides, the second stabilizer bar 3232 is connected between the third connecting rods 3213 on both sides, and the third stabilizer bar 3233 is connected between the fourth connecting rods 3214 on both sides. This can improve the structural stability of the connecting rod assembly 321 without affecting its operation.

[0094] It is worth mentioning that each side linkage assembly 321 is connected between the first bracket 311 and the leg support mounting bracket 33 on the corresponding side. When necessary, each side linkage assembly 321 is also connected to the second bracket 312. That is, each side linkage assembly 321 is connected at the position where the first bracket 311 and the second bracket 312 on the corresponding side are connected, so as to effectively improve the connection strength of each side linkage assembly 321 and ensure the installation reliability of the leg support assembly 30.

[0095] Moreover, the first stabilizer bar 3231, the second stabilizer bar 3232, and the third stabilizer bar 3233 of this embodiment can all be made of pipes. The main advantage of this setting is that it can enhance the structural strength of the first stabilizer bar 3231, the second stabilizer bar 3232, and the third stabilizer bar 3233, facilitate the connection of each stabilizer bar to the corresponding connecting rod, and achieve lightweight design.

[0096] Meanwhile, in this embodiment, based on the avoidance requirements for the drive unit 322, the structural shapes of the stabilizer bars such as the first stabilizer bar 3231, the second stabilizer bar 3232, and the third stabilizer bar 3233 can be correspondingly set and adjusted. For example, the second stabilizer bar 3232 can be set to be in a "ji" shape visually as a whole. Moreover, the number of stabilizer bars can also be correspondingly set and adjusted according to the actual structural strengthening requirements of the connecting rod assembly 321. For example, stabilizer bars are only provided between the third connecting rods 3213 on both sides and between the fourth connecting rods 3214 on both sides.

[0097] In this embodiment, as a preferred implementation form, still as Figure 12 shown, the drive unit 322 and the stabilizer bar assembly 323 are connected by a screw drive assembly 324. It can be understood that the drive unit 322 and the stabilizer bar assembly 323 are connected by the screw drive assembly 324, which is beneficial for converting the rotational motion into a linear motion. This not only improves the flexibility of the layout and installation of the drive unit 322, but also enhances the accuracy and stability of the transmission.

[0098] During specific implementation, the drive unit 322 of this embodiment preferably uses a drive motor, especially a servo motor, in order to obtain better driving speed, driving accuracy, and control effect, and achieve a certain degree of energy conservation. Moreover, the drive motor can be detachably connected to the second bracket 312. Specifically, for example, it is connected by screwing, so as to facilitate the maintenance and replacement of the drive motor. Meanwhile, as a preferred setting form, the screw drive assembly of this embodiment includes a screw 3241 connected to the drive end of the drive motor, and a mounting bracket 3242 provided on the second stabilizer bar 3232. The screw 3241 is rotatably connected to the mounting bracket 3242, thereby realizing the screw 3241 transmission form.

[0099] In addition, in this embodiment, other screw drive mechanisms well-known to those skilled in the art can also be used to achieve the above function of converting rotational motion into linear motion. For example, a drive wheel is connected to the drive end of the drive motor, a driven wheel is screwed onto the screw 3241, the driven wheel is also provided on the second bracket 312, and the drive wheel and the driven wheel are in meshing transmission. At this time, the screw 3241 can be connected to the mounting bracket 3242, etc., and the same beneficial effects can also be achieved.

[0100] As a preferred embodiment, the mounting bracket 3242 can preferably be configured to include a main body and legs disposed on both sides of the main body, so that the mounting bracket 3242 has a U-shaped design in the overall visual appearance. In specific implementation, both legs and the main body are connected to the second stabilizing rod 3232, so that the mounting bracket 3242 is connected to the second stabilizing rod 3232 on at least three sides, effectively increasing the connection area, thereby improving the installation stability of the mounting bracket 3242, thereby improving the transmission reliability between the lead screw 3241 and the mounting bracket 3242.

[0101] Meanwhile, the main body of this embodiment is provided with a screw hole, which is connected to the rotating part. The lead screw 3241 is rotatably connected to the rotating part, thereby forming a structure in which the lead screw 3241 is connected to the drive end of the drive motor and rotatably connected to the second stabilizer 3232. This allows the drive mechanism 32 to convert the rotational motion of the drive motor into the linear motion of the second stabilizer 3232. Under the drive of the second stabilizer 3232, the connecting rod assembly 321 and the stabilizer assembly 323 cooperate to drive the leg support mounting bracket 33 to flip outward to support the legs, or to retract inward to be stored at the bottom of the seat cushion frame.

[0102] In this embodiment, when the leg rest assembly 30 requires support, the drive motor provides rotational power, converting the rotational motion of the lead screw 3241 into linear motion of the second stabilizer bar 3232 via the mounting bracket 3242. This linear motion pushes the second stabilizer bar 3232, which in turn drives the third connecting rods 3213 on both sides to rotate around the first seat cushion crossbeam 21 (i.e., around the first brackets 311 on both sides). At this time, the first connecting rod 3211, the second connecting rod 3212, and the fourth connecting rod 3214 rotate synchronously with the third connecting rod 3213, causing the leg rest mounting bracket 33 to rotate and rise, thus providing leg support for the passenger. When the leg rest assembly 30 does not require support, the drive motor reverses, and the lead screw 3241 pulls the connecting rod assembly 321 in the opposite direction via the mounting bracket 3242 and the stabilizer bar assembly 323, restoring the leg rest assembly 30 to its original position.

[0103] The car seat of this embodiment uses a servo electric motor, a lead screw drive assembly 324, and a linkage assembly 321 in its leg support assembly 30. This structure can convert rotational motion into the flipping motion of the leg support mounting bracket 33, and can be infinitely adjusted according to the occupant's leg support needs to meet any angle of leg support. At the same time, when there is no application need, the leg support mounting bracket 33 can be retracted to the lower part of the seat cushion frame without affecting the occupant's legroom. This solves the pain points of traditional integrated leg support structures, such as the inability to adjust and the occupation of leg space when there is no application need. This makes the leg support assembly 30 of this embodiment more practical and also helps to effectively improve the quality and market competitiveness of the car seat.

[0104] It is still worth mentioning that the specific structure of the first link 3211, the second link 3212, the third link 3213, and the fourth link 3214 in this embodiment can be set and adjusted according to the actual structural strength of each link and the overall structural strength requirements of the link assembly 321. For example, at least one of the first link 3211, the second link 3212, the third link 3213, and the fourth link 3214 can be set to have a U-shaped or L-shaped cross-section.

[0105] Furthermore, if necessary, weight reduction holes can be provided on at least one of the first link 3211, the second link 3212, the third link 3213, and the fourth link 3214 according to the weight reduction requirements of the leg support assembly 30. The specific shape of the weight reduction holes can be designed in conjunction with the shape and trend of each link.

[0106] In addition, in this embodiment, as a preferred implementation, combined with Figures 6 to 9 As shown, a pre-mounting structure is provided between the base frame 31 and the mounting assembly. The pre-mounting structure is used to pre-mount the base frame 31 onto the mounting assembly. This facilitates the installation of the leg support assembly 30.

[0107] To elaborate, see Figure 6 and Figure 9 As shown, the pre-mounted structure of this embodiment includes hook holes 161 on each mounting plate 16 and hooks 3111 on each first bracket 311. During installation, each hook 3111 can be hooked into the corresponding hook hole 161, so that each first bracket 311 is pre-mounted on the corresponding mounting plate 16, that is, the leg support assembly 30 is pre-mounted on the seat cushion frame. Then, each first bracket 311 and the corresponding mounting plate 16 can be fixed together by bolts.

[0108] In the specific structure, the hook hole 161 includes an insertion portion 1611 arranged sequentially along the front-rear direction of the vehicle, and a limiting portion 1612 connected to the insertion portion 1611. Meanwhile, the hook 3111 can be configured to be "Z" shaped in overall visual appearance, and has a connecting portion 31111 connected to the first bracket 311, and a hooking portion 31112 hooked to the hook hole 161. When the hook 3111 is hooked into the hook hole 161, the hooking portion 31112 is limited in the limiting portion 1612 of the hook hole 161, thereby realizing the pre-hanging operation of each first bracket 311.

[0109] Furthermore, in the left-right direction of the vehicle, the width of the connecting part 31111 is preferably smaller than the width of the hook part 31112, and the width of the limiting part 1612 is preferably smaller than the width of the inserting part 1611. This allows the limiting part 1612 to limit the hook part 31112. Secondly, after the bolts are tightened between each first bracket 311 and the corresponding mounting plate 16, a gap will be formed between the hook part 31112 of each hook 3111 and the mounting plate 16 on the corresponding side in the vertical direction of the vehicle. For example, a gap value of 1.5mm will be maintained in the end. This ensures that the pre-hanging process does not affect the hole alignment and avoids friction noise between sheet metal parts on bumpy roads.

[0110] It should be noted that the 1.5mm gap between the hook portion 31112 of each hook 3111 and the corresponding mounting plate 16 is a preferred value, but it is not limited to the 1.5mm gap between the hook portion 31112 and the corresponding mounting plate 16. In practical applications, this gap value can preferably be between 1.0-2.0mm. For example, in addition to 1.5mm, 1.0mm, 1.3mm, 1.7mm or 2.0mm can also be used.

[0111] In this embodiment, the first bracket 311 is preferably configured to include a horizontal connecting portion 31111 connected to the mounting plate 16 and the second bracket 312, and a vertical support portion connected to the horizontal connecting portion 31111. A hook 3111 is disposed on the horizontal connecting portion 31111, so that the first support has an overall L-shaped design. Corresponding to the hook 3111, a through hole is also provided on the beam connecting portion 31111 to facilitate weight reduction. Meanwhile, the hook 3111 and the first bracket 311 are preferably integrally formed. To further improve the structural strength of the first bracket 311, multiple reinforcing recesses can preferably be provided at the connection position between the horizontal connecting portion 31111 and the vertical support portion.

[0112] Furthermore, each of the first brackets 311 and the second brackets 312, as well as the corresponding mounting plates 16, is preferably connected by multiple sets of bolts. Specifically, the bolts can be configured as two bolts located on each side of the hook hole 161 and the hook 3111 along the front-rear direction of the vehicle, to ensure the connection strength between each of the first brackets 311 and the corresponding mounting plates 16. The cross-section of the second bracket 312 can preferably be configured as an "n" shape to give it better structural strength, which helps to improve the overall installation stability of the drive mechanism 32 and the leg support assembly 30.

[0113] After the leg support assembly 30 of this embodiment is assembled, a "bridge" connection structure is formed between the first seat cushion crossbeam 21 and the second seat cushion crossbeam 22. The high bending and torsion resistance of the "bridge" connection structure helps to realize the high performance connection structure advantage of the leg support assembly 30.

[0114] In this embodiment, during specific implementation, the second bracket 312 can be fixedly connected to each of the first brackets 311 firstly, and then the connecting rod assembly 321, the drive unit 322 and the stabilizer rod assembly 323 can be assembled on the second bracket 312 and each of the first brackets 311. Subsequently, the leg support mounting bracket 33 can be installed on the connecting rod assembly 321, and at this time the assembly of the leg support assembly 30 frame is completed.

[0115] Then, after welding each mounting plate 16 between the first seat cushion crossbeam 21 and the second seat cushion crossbeam 22, each first bracket 311 is hooked into the hook hole 161 on the corresponding mounting plate 16 using its respective hook 3111. Then, each first bracket 311 is connected to the corresponding mounting plate 16 using bolts (the bolts also screw onto the second bracket 312), thus completing the installation of the leg support assembly 30 on the seat cushion frame. Of course, this embodiment mainly describes the frame of the leg support assembly 30; as for the leg support foam and other related structures installed on the leg support mounting bracket 33, reference can be made to leg support structures well known to those skilled in the art.

[0116] The car seat in this embodiment, by configuring the seat cushion frame as in Embodiment 1, can improve the structural strength of the seat cushion 10, enabling the addition of the leg support assembly 30 to the car seat and providing higher load-bearing capacity, thereby improving the safety and comfort of the car seat. Furthermore, this car seat is not limited to front, middle, or rear seats; it can be used for any seat requiring leg support, such as seats corresponding to the driver and front passenger seats.

[0117] In addition, this embodiment also relates to a car equipped with the aforementioned car seat. That is, as described above, in this embodiment, the car seat can slide along the front-to-back direction of the vehicle to ensure basic position adjustment needs. Furthermore, since the car seat is equipped with the seat cushion frame as described in Embodiment 1, it can provide better load-bearing performance, helping to leverage the support advantages of the leg support assembly 30 in this embodiment.

[0118] Therefore, the automobile of this embodiment combines the seat cushion frame of embodiment one with the leg support assembly 30 of this embodiment, which can effectively improve the riding comfort of the automobile. At the same time, in a specific implementation, the automobile of this embodiment also includes a controller connected to the drive unit 322 of the leg support assembly 30, so as to control the opening and closing of the drive unit 322 through the controller. The controller can be a control device known to those skilled in the art, such as a vehicle controller.

[0119] The car seat in this embodiment, by configuring the seat cushion frame in Embodiment 1, can have better load-bearing performance and facilitate the addition of leg rests. This solves the pain points of traditional integrated leg rest structures, such as the inability to adjust and the occupation of leg space when there is no application need, thereby improving the riding comfort of the car seat and improving the overall quality of the vehicle.

[0120] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seat cushion frame, characterized in that: It includes side panels (11) on the left and right sides respectively. Each side panel (11) is mounted on the vehicle floor by a support assembly, and a first cavity (14) is formed between the support assembly on each side and the side panel (11) on the same side. A first seat cushion crossbeam (21) and a second seat cushion crossbeam (22) are provided between the two side plates (11) along the front-rear direction of the vehicle. A mounting assembly for mounting the leg support assembly (30) is provided between the first seat cushion crossbeam (21) and the second seat cushion crossbeam (22), and the two ends of the second seat cushion crossbeam (22) extend into the first cavity (14) on the corresponding side.

2. The seat cushion frame according to claim 1, characterized in that: The support assembly includes a first support plate (12) and a second support plate (13) arranged at intervals along the front-rear direction of the vehicle, and the first cavity (14) on each side is formed between the first support plate (12) and the side plate (11) on the same side. A third seat cushion crossbeam (23) is provided between the side plates (11) on both sides. Along the front-rear direction of the vehicle, the third seat crossbeam is located behind the second seat cushion crossbeam (22), and the two ends of the third seat crossbeam are respectively connected to the second support plate (13) and the side plate (11) on the corresponding side.

3. The seat cushion frame according to claim 2, characterized in that: A second cavity (15) is formed between each of the second support plates (13) and the side plate (11) on the same side, and both ends of the third seat beam (23) are disposed through the second cavity (15) on the corresponding side.

4. A car seat, characterized in that: The seat frame includes any one of claims 1 to 3.

5. The car seat according to claim 4, characterized in that: It also includes a leg support assembly (30); The leg support assembly (30) includes a base frame (31) connected to the mounting assembly, a drive mechanism (32) disposed on the base frame (31), and a leg support mounting bracket (33) driven by the drive mechanism (32); Driven by the drive mechanism (32), the leg support mounting bracket (33) can be rotated outward around the first seat crossbeam (21) to support the legs of the passenger.

6. The car seat according to claim 5, characterized in that: The drive mechanism (32) includes a linkage assembly (321) disposed between the base frame (31) and the leg support mounting, and a drive unit (322) disposed on the base frame (31), the drive unit (322) being drivenly connected to the linkage assembly (321).

7. The car seat according to claim 6, characterized in that: The connecting rod assembly (321) consists of two sets arranged in a one-to-one correspondence with each side plate (11). The two sets of connecting rod assemblies (321) are connected by a stabilizer bar assembly (323), and the driving end of the driving unit (322) is connected to the stabilizer bar assembly (323).

8. The automobile seat according to claim 7, characterized in that: The drive unit (322) is connected to the stabilizer bar assembly (323) via a lead screw drive assembly (324); and / or, The mounting assembly includes two mounting plates (16) disposed on the left and right sides respectively. The base frame (31) includes two first brackets (311) and a second bracket (312) connected between the two first brackets (311). Each first bracket (311) is connected to each mounting plate (16) in a one-to-one correspondence. The driving unit (322) is disposed on the second bracket (312).

9. The automobile seat according to any one of claims 5 to 8, characterized in that: A pre-hanging structure is provided between the base frame (31) and the mounting assembly, the pre-hanging structure being used to pre-hang the base frame (31) on the mounting assembly.

10. A car, characterized in that: The vehicle is equipped with a vehicle seat as described in any one of claims 5 to 9.

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