Seat leg support mechanism, seat and vehicle

Abstract

The embodiment of the utility model provides a seat leg support mechanism, a seat and a vehicle. The seat leg support mechanism comprises a mounting structure, a leg support plate, an extension plate, a first connecting rod structure, a second connecting rod structure and a driving structure, the extending plate is rotationally connected to the leg supporting plate, the first connecting rod structure is rotationally connected to the mounting structure and the leg supporting plate, the second connecting rod structure is rotationally connected to the first connecting rod structure and the extending plate, and the driving structure is connected to the mounting structure and the first connecting rod structure; the driving structure drives the first connecting rod structure to rotate relative to the mounting structure, the first connecting rod structure drives the leg supporting plate to rotate, the first connecting rod structure drives the second connecting rod structure to rotate, and the second connecting rod structure drives the extension plate to rotate relative to the leg supporting plate, so that the seat leg supporting mechanism is unfolded or folded; the first connecting rod structure and the second connecting rod structure are straight-bar-shaped connecting rods. Rotary adjustment and telescopic adjustment of the leg supporting plate and the extension plate are achieved through a driving structure, and unfolding or folding of the seat leg supporting mechanism is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of vehicles, and particularly relates to a seat leg rest mechanism, a seat and a vehicle. Background Art

[0002] With the development and progress of technology, people have put forward higher and higher requirements for the performance of vehicles. Among them, the seat can include a leg rest mechanism, which can improve the riding comfort of passengers.

[0003] In the prior art, the seat leg rest mechanism usually includes a mounting plate, a rotating plate, an extension plate, a rotating motor and an extension motor. The rotating plate is rotatably connected to the mounting plate, and the rotating motor is used to drive the rotating plate to rotate relative to the mounting plate for adjustment; the extension plate is telescopically connected to the rotating plate, and the extension motor is used to drive the extension plate to telescopically adjust the length relative to the rotating plate.

[0004] However, the inventors found in the process of researching the prior art that using a rotating motor and an extension motor to respectively achieve the rotation adjustment and telescopic adjustment of the seat leg rest results in a relatively complex structure of the seat leg rest mechanism, and software logic is required for control, and the cost is also relatively high. Summary of the Utility Model

[0005] In view of the above problems, the present utility model is proposed to provide a seat leg rest mechanism, a seat and a vehicle that can overcome or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the present application is implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a seat leg rest mechanism, which includes: a mounting structure, a leg rest plate, an extension plate, a first link structure, a second link structure and a driving structure;

[0008] The extension plate is rotatably connected to the leg rest plate, the first link structure is respectively rotatably connected to the mounting structure and the leg rest plate, the second link structure is respectively rotatably connected to the first link structure and the extension plate, and the driving structure is respectively connected to the mounting structure and the first link structure;

[0009] The driving structure drives the first link structure to rotate relative to the mounting structure, the first link structure drives the leg rest plate to rotate, and the first link structure drives the second link structure to rotate, and the second link structure drives the extension plate to rotate relative to the leg rest plate, so that the seat leg rest mechanism is unfolded or folded;

[0010] Wherein, the first link structure and the second link structure are straight bar-shaped links.

[0011] Optionally, the driving structure includes a driving member and a lead screw. The driving member is connected to the mounting structure, and the lead screw is respectively connected to the driving member and the first link structure;

[0012] The driving member drives the lead screw to move, and the lead screw drives the first link structure to rotate relative to the mounting structure.

[0013] Optionally, the seat leg rest mechanism further includes an adapter plate. One end of the adapter plate is rotatably connected to the lead screw, and the axis of the adapter plate is perpendicular to the axis of the lead screw. The other end of the adapter plate is connected to the first link structure;

[0014] The driving member drives the lead screw to rotate and move in a linear direction. The lead screw drives the adapter plate to rotate, and the adapter plate drives the first link structure to rotate.

[0015] Optionally, the first link structure includes a connecting shaft and a link assembly;

[0016] The connecting shaft is connected to the driving structure, the link assembly is connected to the connecting shaft, and the link assembly is respectively rotatably connected to the mounting structure and the leg rest plate. The second link structure is rotatably connected to the link assembly;

[0017] The driving structure drives the connecting shaft to rotate, the connecting shaft drives the link assembly to rotate, and the link assembly drives the leg rest plate and the second link structure to rotate.

[0018] Optionally, the link assembly includes a first link and a second link;

[0019] The first link is connected to the connecting shaft, and the first link is respectively rotatably connected to the mounting structure and the leg rest plate. The second link is respectively rotatably connected to the leg rest plate and the first link. The second link structure is rotatably connected to the second link;

[0020] The connecting shaft drives the first link to rotate, the first link drives the leg rest plate and the second link to rotate, and the second link drives the second link structure to rotate.

[0021] Optionally, the second link structure includes a plurality of sub-links that are sequentially rotatably connected. One of the plurality of sub-links is rotatably connected to the extension plate, and another one of the plurality of sub-links is rotatably connected to the second link.

[0022] Optionally, the plurality of sub-links include a first sub-link, a second sub-link, and a third sub-link;

[0023] One end of the first sub-link is rotatably connected to the extension plate, the other end of the first sub-link is rotatably connected to one end of the second sub-link, the other end of the second sub-link is rotatably connected to one end of the third sub-link, the other end of the third sub-link is rotatably connected to the second link, and the second sub-link is rotatably connected to the leg rest plate.

[0024] Optionally, the mounting structure includes a first mounting plate, a second mounting plate, and a connecting pipe. The first mounting plate and the second mounting plate are spaced apart, and the connecting pipe is connected between the first mounting plate and the second mounting plate.

[0025] In a second aspect, an embodiment of the present application provides a seat, and the seat includes the seat leg rest mechanism described above.

[0026] In a third aspect, an embodiment of the present application provides a vehicle, and the vehicle includes the seat described above.

[0027] In an embodiment of the present application, the seat leg rest mechanism includes: a mounting structure, a leg rest plate, an extension plate, a first link structure, a second link structure, and a driving structure; the extension plate is rotatably connected to the leg rest plate, the first link structure is respectively rotatably connected to the mounting structure and the leg rest plate, the second link structure is respectively rotatably connected to the first link structure and the extension plate, and the driving structure is respectively connected to the mounting structure and the first link structure; the driving structure drives the first link structure to rotate relative to the mounting structure, the first link structure drives the leg rest plate to rotate, and the first link structure drives the second link structure to rotate, and the second link structure drives the extension plate to rotate relative to the leg rest plate, so that the seat leg rest mechanism is unfolded or folded; wherein, the first link structure and the second link structure are straight bar-shaped links. In this way, when it is necessary to use the seat leg rest mechanism and open it, the driving structure can be used to drive the first link structure to rotate away from the mounting structure and unfold, and the first link structure drives the leg rest plate and the second link structure to rotate, and the second link structure drives the extension plate to rotate away from the mounting structure and unfold, so that the seat leg rest mechanism is in an unfolded state, and the size of the leg rest plate is further lengthened by the extension plate, so that the user's legs can be better supported and the comfort is improved. In addition, since the first link structure and the second link structure are straight bar-shaped links, it is also convenient for processing and manufacturing. When it is not necessary to use the seat leg rest mechanism and fold it, the driving structure can be used to drive the first link structure to rotate close to the mounting structure and fold and contract, and the first link structure drives the leg rest plate and the second link structure to rotate, and the second link structure drives the extension plate to rotate close to the mounting structure and fold and contract, so that the seat leg rest mechanism is in a folded state, and the extension plate is synchronously stored, avoiding the need for the extension plate to occupy a large space. Since the first link structure can extend or contract during rotation, the length dimension of the leg rest plate can be adjusted, so that the leg rest plate extends or shortens, and thus the rotation adjustment and telescopic adjustment of the leg rest plate and the extension plate can be realized through a driving structure and a first link structure, so that the seat leg rest mechanism can be switched between the unfolded state and the folded state. In this way, there is no need to set two driving structures, which avoids the complex structure caused by using a rotation motor and an extension motor respectively to realize the rotation adjustment and telescopic adjustment of the seat leg rest mechanism, and also reduces the cost. Moreover, there is no need to use software logic for control, which reduces the computing cost of the vehicle and is also beneficial to cost reduction.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, where:

[0030] Figure 1 is one of the schematic structural diagrams of a seat leg rest mechanism according to an embodiment of the present application;

[0031] Figure 2 is another schematic structural diagram of a seat leg rest mechanism according to an embodiment of the present application;

[0032] Figure 3 is yet another schematic structural diagram of a seat leg rest mechanism according to an embodiment of the present application;

[0033] Figure 4 is a seat leg rest mechanism according to an embodiment of the present application Figure 3 side view;

[0034] Figure 5 is an exploded schematic structural diagram of a seat leg rest mechanism according to an embodiment of the present application;

[0035] Figure 6 is a fourth schematic structural diagram of a seat leg rest mechanism according to an embodiment of the present application;

[0036] Figure 7 is a seat leg rest mechanism according to an embodiment of the present application Figure 6 side view.

[0037] Reference numerals: 10 - mounting structure; 20 - leg rest plate; 30 - driving member; 31 - lead screw; 32 - adapter plate; 40 - extension plate; 51 - connecting shaft; 52 - first connecting rod; 521 - first support rod; 522 - second support rod; 53 - second connecting rod; 54 - third connecting rod; 61 - first sub-connecting rod; 62 - second sub-connecting rod; 63 - third sub-connecting rod; 11 - first mounting plate; 12 - second mounting plate; 13 - connecting pipe. Detailed implementation manners

[0038] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0039] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "a plurality of" means two or more. In addition, "and / or" in the description and claims indicates at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0040] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this utility model.

[0041] In the description of this utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] Referring to Figures 1 to 7 , a schematic structural diagram of a seat leg rest mechanism according to an embodiment of this application is shown, which specifically may include: a mounting structure 10, a leg rest plate 20, an extension plate 40, a first link structure, a second link structure, and a driving structure;

[0043] The extension plate 40 is rotatably connected to the leg rest plate 20, the first link structure is respectively rotatably connected to the mounting structure 10 and the leg rest plate 20, the second link structure is respectively rotatably connected to the first link structure and the extension plate 40, and the driving structure is respectively connected to the mounting structure 10 and the first link structure;

[0044] The driving structure drives the first link structure to rotate relative to the mounting structure 10, the first link structure drives the leg rest plate 20 to rotate, and the first link structure drives the second link structure to rotate, and the second link structure drives the extension plate 40 to rotate relative to the leg rest plate 20, so that the seat leg rest mechanism is unfolded or folded;

[0045] Wherein, the first link structure and the second link structure are straight bar links.

[0046] In the embodiment of the present application, when it is necessary to open the seat leg rest mechanism using it, the first link structure can be driven by a driving structure to rotate away from the mounting structure 10 and unfold, and the leg rest plate 20 and the second link structure are driven to rotate by the first link structure. The second link structure drives the extension plate 40 to rotate away from the mounting structure 10 and unfold, so that the seat leg rest mechanism is in the Figures 1 to 4 unfolded state as shown, and the size of the leg rest plate 20 is further increased by the extension plate 40, so that the user's legs are better supported and the comfort is improved. In addition, the first link structure and the second link structure are straight bar links, which is also convenient for processing and manufacturing. When it is not necessary to fold the seat leg rest mechanism using it, the first link structure can be driven by a driving structure to rotate close to the mounting structure 10 and fold and contract, and the leg rest plate 20 and the second link structure are driven to rotate by the first link structure. The second link structure drives the extension plate 40 to rotate close to the mounting structure 10 and fold and contract, so that the seat leg rest mechanism is in the Figures 6 to 7 folded state as shown, and the extension plate 40 is synchronously stored, avoiding the need for the extension plate 40 to occupy a large space.

[0047] Since the first link structure can extend or contract during rotation, the length dimension of the leg rest plate 20 is adjusted, so that the leg rest plate 20 extends or shortens. The spatial structure suitable for different vehicle models can be achieved by setting the specific length of the first link structure, so that the first link structure has a more appropriate telescopic adjustment effect on the leg rest plate 20. Thus, the rotation adjustment and telescopic adjustment of the leg rest plate 20 can be realized by a driving structure and the first link structure, so that the seat leg rest mechanism can be switched between the unfolded state and the folded state. In this way, there is no need to set two driving structures, avoiding the complexity of the structure caused by using a rotation motor and an extension motor respectively to realize the rotation adjustment and telescopic adjustment of the seat leg rest mechanism, and also reducing the cost. And there is no need to use software logic for control, reducing the computing cost of the vehicle and also being beneficial to cost reduction.

[0048] In the embodiment of the present application, the extension plate 40 is rotatably connected to the side of the leg rest plate 20 away from the first link structure, and the second link structure is rotatably connected to the first link structure and the extension plate 40 respectively; the first link structure drives the second link structure to rotate, and the second link structure drives the extension plate 40 to rotate relative to the leg rest plate 20. That is, the rotational connection between the extension plate 40 and the first link structure is realized through the second link structure. While the first link structure drives the leg rest plate 20 to rotate and unfold, the first link structure can also drive the extension plate 40 to rotate and open relative to the leg rest plate 20 through the second link structure, thereby further lengthening the size of the leg rest plate 20 through the extension plate 40, so that the user's legs can be better supported and the comfort is improved. When the seat leg rest mechanism is not needed, while the first link structure drives the leg rest plate 20 to rotate and fold, the first link structure drives the extension plate 40 to rotate and fold relative to the leg rest plate 20 through the second link structure, synchronously realizing the storage of the extension plate 40 and avoiding the extension plate 40 occupying a large space.

[0049] Exemplarily, in the embodiment of the present application, the number of the second link structures can be two groups, and the two groups of second link structures are symmetrically distributed at both ends of the extension plate 40 respectively, so that the second link structures can rotate more stably on both sides of the extension plate 40. In addition, the number of the second link structures can also be three groups, four groups, etc., which can be set according to actual needs, and the specific number of the second link structures set in the embodiment of the present application can be not limited.

[0050] Specifically, in the embodiment of the present application, the mounting structure 10 is used to be connected to the seat frame, so that the seat leg rest mechanism has better connection stability. Further, the mounting structure 10 is directly connected to the seat frame, and the leg rest plate 20 is connected to the mounting structure 10 through the first link structure. When the leg rest plate 20 rotates and unfolds relative to the mounting structure 10, a large gap between the leg rest plate 20 and the seat is avoided, and the seamless function of the seat leg rest mechanism can be better realized.

[0051] Exemplarily, as Figure 5 shown, the mounting structure 10 can include a first mounting plate 11, a second mounting plate 12 and a connecting pipe 13. The first mounting plate 11 and the second mounting plate 12 can be spaced and connected to the seat frame symmetrically, and the connecting pipe 13 is connected between the first mounting plate 11 and the second mounting plate 12, having better layout rationality and structural stability. In addition, the mounting structure 10 can also include a mounting plate, and the specific type and distribution mode of the mounting structure 10 in the embodiment of the present application can be not limited.

[0052] In the embodiment of the present application, the leg rest plate 20 is used to support the user's calf to relax and improve the riding comfort. For example, the leg rest plate 20 can be spliced and welded by multiple connecting plates, such as angle steels, so that the leg rest plate 20 has good structural strength, and at the same time can reduce the consumption of materials, which is beneficial to reducing the weight and realizing the lightweight design of the product. In addition, the leg rest plate 20 can also adopt a whole connecting plate to improve the structural strength of the leg rest plate 20. The embodiment of the present application may not limit the specific structural type of the leg rest plate 20.

[0053] Optionally, in the embodiment of the present application, as Figure 3 shown, the driving structure includes a driving member 30 and a lead screw 31. The driving member 30 is connected to the mounting structure 10, and the lead screw 31 is respectively connected to the driving member 30 and the first link structure; the driving member 30 drives the lead screw 31 to move, and the lead screw 31 drives the first link structure to rotate relative to the mounting structure 10. In this way, by providing a relatively stable and reliable driving force by the driving member 30, the lead screw 31 can be connected to the output end of the driving member 30 and convert the rotational motion into a linear motion. The driving member 30 drives the lead screw 31 to rotate and makes the lead screw 31 move linearly along the axis, thereby driving the first link structure to rotate relative to the mounting structure 10, and the first link structure drives the leg rest plate 20 to rotate, so that the seat leg rest mechanism switches between the unfolded state and the folded state.

[0054] In the embodiment of the present application, a threaded structure is provided on the outer periphery of the lead screw 31, and a transmission gear is provided at the output end of the driving member 30. A rack is provided on the inner wall of the transmission gear. The lead screw 31 passes through the transmission gear, and the rack on the inner wall of the transmission gear meshes with the threaded structure on the outer periphery of the lead screw 31. The driving member 30 drives the transmission gear to rotate, and the transmission gear drives the lead screw 31 to rotate. For example, in the embodiment of the present application, the driving member 30 can be a motor or a motor, etc. The embodiment of the present application may not limit the specific type of the driving member 30.

[0055] In the embodiment of the present application, optionally, as Figure 2 shown, the seat leg rest mechanism further includes an adapter plate 32. One end of the adapter plate 32 is rotatably connected to one end of the lead screw 31, and the other end of the adapter plate 32 is connected to the first link structure; the driving member 30 drives the lead screw 31 to rotate and move in a straight line direction, the lead screw 31 drives the adapter plate 32 to rotate, and the adapter plate 32 drives the first link structure to rotate. In this way, the driving member 30 drives the lead screw 31 to move linearly along the unfolding direction of the leg rest plate 20. One end of the lead screw 31 is rotatably connected to the adapter plate 32, and the axis of the adapter plate 32 is perpendicular to the axis of the lead screw 31. The lead screw 31 drives the adapter plate 32 to rotate to realize the conversion of the transmission direction.

[0056] For example, in the embodiments of the present application, the adapter plate 32 can be rotatably connected to the lead screw 31 through a connecting block and a rotating shaft. Specifically, the connecting block is connected to one end of the lead screw 31. Openings are provided on both the connecting block and the adapter plate 32. The rotating shaft passes through the openings on the connecting block and the adapter plate 32 in sequence, so as to achieve a rotatable connection between the adapter plate 32 and the lead screw 31. In addition, the adapter plate 32 and the lead screw 31 can also be directly connected through the rotating shaft. The specific connection manner between the adapter plate 32 and the lead screw 31 in the embodiments of the present application may not be limited.

[0057] In some alternative embodiments of the present application, the seat leg rest mechanism may further include a mounting bracket. The mounting bracket is connected to the mounting structure 10, and the driving member 30 is connected to the mounting bracket, providing a relatively stable and reliable mounting position for the driving member 30 through the mounting bracket. For example, the mounting bracket can be connected to the connecting pipe of the mounting structure 10 and is located between two mounting plates. The driving member 30 is arranged using the space between the two mounting plates, having a relatively reasonable spatial layout structure and improving space utilization.

[0058] In the embodiments of the present application, optionally, as Figure 1 shown, the first link structure includes a connecting shaft 51 and a link assembly; the connecting shaft 51 is connected to the driving structure, the link assembly is connected to the connecting shaft 51, and the link assembly is respectively rotatably connected to the mounting structure 10 and the leg rest plate 20. The second link structure is rotatably connected to the link assembly; the driving structure drives the connecting shaft 51 to rotate, the connecting shaft 51 drives the link assembly to rotate, and the link assembly drives the leg rest plate 20 and the second link structure to rotate. In this way, the connection between the first link structure and the driving component is achieved through the connecting shaft 51, and the rotatable connection between the first link structure and the mounting structure 10 and the leg rest plate 20 is achieved through the link assembly, so that the first link structure has a better force transmission effect and structural layout.

[0059] Specifically, in the embodiments of the present application, as Figure 3 shown, the connecting shaft 51 can be connected to the adapter plate 32, and the adapter plate 32 is rotatably connected to the lead screw 31 to achieve the connection between the connecting shaft 51 and the driving structure. For example, the number of link assemblies can be two groups. The two groups of link assemblies are symmetrically distributed at both ends of the connecting shaft 51, enabling the link assemblies to rotate relatively stably on both sides of the leg rest plate 20. In addition, the number of link assemblies can also be three groups, four groups, etc., which can be set according to actual needs. The specific number of link assemblies in the embodiments of the present application may not be limited.

[0060] Optionally, in the embodiments of the present application, as Figure 1 and Figure 2As shown in the figure, the connecting rod assembly includes a first connecting rod 52 and a second connecting rod 53; the first connecting rod 52 is connected to the connecting shaft 51, and the first connecting rod 52 is respectively rotatably connected to the mounting structure 10 and the leg rest plate 20, and the second connecting rod 53 is respectively rotatably connected to the leg rest plate 20 and the first connecting rod 52, and the second connecting rod structure is rotatably connected to the second connecting rod 53; the connecting shaft 51 drives the first connecting rod 52 to rotate, the first connecting rod 52 drives the leg rest plate 20 and the second connecting rod 53 to rotate, and the second connecting rod 53 drives the second connecting rod structure to rotate. Specifically, one end of the first connecting rod 52 is fixedly connected to the connecting shaft 51, and a relatively reliable connection between the connecting rod assembly and the connecting shaft 51 is achieved through the first connecting rod 52, and a rotational connection between the connecting rod assembly and the mounting structure 10 and the leg rest plate 20 is achieved through the first connecting rod 52. By way of example, the middle area of the first connecting rod 52 can be connected to the connecting shaft 51, and the two ends of the first connecting rod 52 are respectively rotatably connected to the mounting structure 10 and the leg rest plate 20. And, a rotational connection between the connecting rod assembly and the second connecting rod structure is achieved through the second connecting rod 53.

[0061] In this way, the lead screw 31 of the driving structure drives the connecting shaft 51 to rotate, the connecting shaft 51 drives the first connecting rod 52 to rotate, the first connecting rod 52 drives the leg rest plate 20 to rotate relative to the mounting structure 10, and at the same time the first connecting rod 52 drives the second connecting rod 53 to rotate, the second connecting rod 53 drives the second connecting rod structure to rotate, and the second connecting rod structure drives the extension plate 40 to rotate relative to the leg rest plate 20, realizing the switching between the unfolded state and the folded and contracted state of the seat leg rest mechanism.

[0062] By way of example, in the embodiment of the present application, the number of the first connecting rod 52 and the second connecting rod 53 can be two groups, and the two groups of the first connecting rod 52 and the second connecting rod 53 are respectively arranged symmetrically at both ends of the leg rest plate 20, so that the first connecting rod 52 and the second connecting rod 53 can rotate stably on both sides of the leg rest plate 20. In addition, the number of the first connecting rod 52 and the second connecting rod 53 can also be three groups or four groups, etc., and can be set according to actual needs. The specific number of the second connecting rod structure in the embodiment of the present application can be not limited.

[0063] In the embodiment of the present application, by way of example, such as Figure 1 and Figure 2As shown, the first link 52 may include a first rod 521 and a second rod 522. Wherein, both ends of the first rod 521 are respectively rotatably connected to the leg support plate 20 and the second rod 522, and one end of the second rod 522 away from the first rod 521 is rotatably connected to the first rod 521 and the mounting structure 10. In this way, the first link 52 has a more flexible spatial structure layout, facilitating the relatively flexible and reliable rotation of the link assembly. By way of example, the number of the first rod 521 and the second rod 522 may be 1, 2, 3, etc., and can be set according to the requirements of the actual spatial structure layout. The embodiments of the present application may not limit this.

[0064] In some alternative embodiments of the present application, such as Figure 1 and Figure 4 As shown, the link assembly further includes a third link 54. One end of the third link 54 is rotatably connected to the second link 53, and the other end of the third link 54 is rotatably connected to the mounting structure 10. In this way, the second link 53 is connected to the mounting structure 10 through the third link 54, enabling the link assembly to have better structural stability and rotational stability, and without the need to occupy much space for layout. The number of the third links 54 is set corresponding to the number of the second links 53. By way of example, the number of the third links 54 may also be 2, 3, etc., and can be set according to actual needs. The embodiments of the present application may not limit this either.

[0065] Optionally, in the embodiments of the present application, the second link structure includes a plurality of sub-links sequentially rotatably connected. One of the plurality of sub-links is rotatably connected to the extension plate 40, and the other of the plurality of sub-links is rotatably connected to the second link 53. In this way, the transmission of the second link structure is realized through a plurality of sub-links, so as to facilitate the setting of the second link structure according to the spatial structure layout and transmission requirements, etc., improving the transmission reliability and layout flexibility of the second link structure. By way of example, the number of the sub-links may be 2, 3, 4, etc., and can be set according to actual transmission requirements and spatial layout. The embodiments of the present application may not limit the specific number of the sub-links.

[0066] In some alternative embodiments of the present application, by way of example, such as Figure 4As shown, the multiple sub-links include a first sub-link 61, a second sub-link 62, and a third sub-link 63. One end of the first sub-link 61 is rotatably connected to the extension plate 40, the other end of the first sub-link 61 is rotatably connected to one end of the second sub-link 62, the other end of the second sub-link 62 is rotatably connected to one end of the third sub-link 63, the other end of the third sub-link 63 is rotatably connected to the second link 53, and the second sub-link 62 is rotatably connected to the leg rest plate 20. In this way, the rotational connection between the second link structure and the extension plate 40 is achieved through the first sub-link 61, the rotational connection between the second link structure and the second link 53 is achieved through the third link 54, and the rotational connection between the first sub-link 61, the third sub-link 63, and the leg rest plate 20 is achieved through the second sub-link 62, improving the transmission reliability and stability of the second link structure.

[0067] It can be understood that in the embodiments of the present application, the rotational connections between various structures, such as the rotational connections between the first link 52 and the mounting structure 10 and the leg rest plate 20 respectively, the rotational connection between the first link 52 and the second link 53, the rotational connections between the third link 54 and the second link 53 and the mounting structure 10 respectively, and the rotational connections between the first sub-link 61, the second sub-link 62, and the third sub-link 63, can be achieved through a rotating shaft or can be achieved by riveting with screws or studs, etc. The embodiments of the present application may not limit the specific manner of the above rotational connections.

[0068] In summary, the seat leg rest mechanism described in the embodiments of the present application may at least have the following advantages:

[0069] In the embodiment of the present application, the seat leg rest mechanism includes: a mounting structure, a leg rest plate, an extension plate, a first link structure, a second link structure, and a driving structure; the extension plate is rotatably connected to the leg rest plate, the first link structure is respectively rotatably connected to the mounting structure and the leg rest plate, the second link structure is respectively rotatably connected to the first link structure and the extension plate, and the driving structure is respectively connected to the mounting structure and the first link structure; the driving structure drives the first link structure to rotate relative to the mounting structure, the first link structure drives the leg rest plate to rotate, and the first link structure drives the second link structure to rotate, and the second link structure drives the extension plate to rotate relative to the leg rest plate, so that the seat leg rest mechanism is unfolded or folded; wherein, the first link structure and the second link structure are straight bar-shaped links. In this way, when it is necessary to use the seat leg rest mechanism to open it, the driving structure can be used to drive the first link structure to rotate away from the mounting structure and unfold, and the first link structure drives the leg rest plate and the second link structure to rotate, and the second link structure drives the extension plate to rotate away from the mounting structure and unfold, so that the seat leg rest mechanism is in the unfolded state, and the size of the leg rest plate is further lengthened by the extension plate, so that the user's legs can be better supported and the comfort is improved. In addition, since the first link structure and the second link structure are straight bar-shaped links, it is also convenient for processing and manufacturing. When it is not necessary to use the seat leg rest mechanism to fold it, the driving structure can be used to drive the first link structure to rotate close to the mounting structure and fold and contract, and the first link structure drives the leg rest plate and the second link structure to rotate, and the second link structure drives the extension plate to rotate close to the mounting structure and fold and contract, so that the seat leg rest mechanism is in the folded state, and the extension plate can be stored synchronously, avoiding the need for the extension plate to occupy a large space. Since the first link structure can extend or contract during rotation, the length dimension of the leg rest plate can be adjusted, so that the leg rest plate extends or shortens, so that the rotation adjustment and telescopic adjustment of the leg rest plate and the extension plate can be realized through a driving structure and a first link structure, so that the seat leg rest mechanism can be switched between the unfolded state and the folded state. In this way, there is no need to set two driving structures, avoiding the complexity of the structure caused by using a rotation motor and an extension motor respectively to realize the rotation adjustment and telescopic adjustment of the seat leg rest mechanism, and also reducing the cost. And there is no need to use software logic for control, reducing the computing cost of the vehicle and also being beneficial to cost reduction.

[0070] An embodiment of the present application provides a seat, and the seat includes the seat leg rest mechanism described above.

[0071] Exemplarily, in the embodiment of the present application, the seat includes a seat frame, and the seat leg rest mechanism can be connected to the end of the seat frame. Specifically, the installation structure of the seat leg rest mechanism is connected to the end of the seat frame, so that the seat leg rest mechanism has good stability during the switching between the unfolded state and the folded and retracted state.

[0072] An embodiment of the present application provides a vehicle, which includes the seat described above.

[0073] Exemplarily, in the embodiment of the present application, the vehicle may include a compact car, a medium-sized vehicle, a sedan, a truck, a trailer, a CDV (Car Derived Van), an MPV (multi-Purpose Vehicles), an SUV (Sport Utility Vehicles), etc. The specific types of the vehicle in the embodiment of the present application may not be limited.

[0074] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A seat leg rest mechanism, characterized in that, The seat leg rest mechanism includes: a mounting structure (10), a leg rest plate (20), an extension plate (40), a first link structure, a second link structure, and a driving structure; The extension plate (40) is rotatably connected to the leg rest plate (20), the first link structure is respectively rotatably connected to the mounting structure (10) and the leg rest plate (20), the second link structure is respectively rotatably connected to the first link structure and the extension plate (40), and the driving structure is respectively connected to the mounting structure (10) and the first link structure; The driving structure drives the first link structure to rotate relative to the mounting structure (10), the first link structure drives the leg rest plate (20) to rotate, and the first link structure drives the second link structure to rotate, and the second link structure drives the extension plate (40) to rotate relative to the leg rest plate (20), so that the seat leg rest mechanism is unfolded or folded; Wherein, the first link structure and the second link structure are straight bar-shaped links.

2. The seat leg rest mechanism according to claim 1, characterized in that, The driving structure includes a driving member (30) and a lead screw (31), the driving member (30) is connected to the mounting structure (10), and the lead screw (31) is respectively connected to the driving member (30) and the first link structure; The driving member (30) drives the lead screw (31) to move, and the lead screw (31) drives the first link structure to rotate relative to the mounting structure (10).

3. The seat leg rest mechanism according to claim 2, wherein The seat leg rest mechanism further includes a transfer plate (32), one end of the transfer plate (32) is rotatably connected to the lead screw (31), and the axis of the transfer plate (32) is perpendicular to the axis of the lead screw (31), and the other end of the transfer plate (32) is connected to the first link structure; The driving member (30) drives the lead screw (31) to rotate and move in a linear direction, the lead screw (31) drives the transfer plate (32) to rotate, and the transfer plate (32) drives the first link structure to rotate.

4. The seat leg rest mechanism according to claim 1, characterized in that The first link structure includes a connecting shaft (51) and a link assembly; The connecting shaft (51) is connected to the driving structure, the link assembly is connected to the connecting shaft (51), and the link assembly is respectively rotatably connected to the mounting structure (10) and the leg rest plate (20), and the second link structure is rotatably connected to the link assembly; The driving structure drives the connecting shaft (51) to rotate, the connecting shaft (51) drives the link assembly to rotate, and the link assembly drives the leg rest plate (20) and the second link structure to rotate.

5. The seat leg rest mechanism according to claim 4, characterized in that, The link assembly includes a first link (52) and a second link (53); The first link (52) is connected to the connecting shaft (51), and the first link (52) is respectively rotatably connected to the mounting structure (10) and the leg rest plate (20), the second link (53) is respectively rotatably connected to the leg rest plate (20) and the first link (52), and the second link structure is rotatably connected to the second link (53); The connecting shaft (51) drives the first connecting rod (52) to rotate, the first connecting rod (52) drives the leg support plate (20) and the second connecting rod (53) to rotate, and the second connecting rod (53) drives the second connecting rod structure to rotate.

6. The seat leg rest mechanism according to claim 4, characterized in that, The second connecting rod structure includes a plurality of sub-connecting rods that are sequentially rotatably connected. One of the plurality of sub-connecting rods is rotatably connected to the extension plate (40), and another one of the plurality of sub-connecting rods is rotatably connected to the second connecting rod (53).

7. The seat leg rest mechanism according to claim 6, characterized in that, The plurality of sub-connecting rods include a first sub-connecting rod (61), a second sub-connecting rod (62), and a third sub-connecting rod (63); One end of the first sub-connecting rod (61) is rotatably connected to the extension plate (40), the other end of the first sub-connecting rod (61) is rotatably connected to one end of the second sub-connecting rod (62), the other end of the second sub-connecting rod (62) is rotatably connected to one end of the third sub-connecting rod (63), the other end of the third sub-connecting rod (63) is rotatably connected to the second connecting rod (53), and the second sub-connecting rod (62) is rotatably connected to the leg support plate (20).

8. The seat leg rest mechanism according to claim 1, characterized in that, The mounting structure (10) includes a first mounting plate (11), a second mounting plate (12), and a connecting pipe (13). The first mounting plate (11) and the second mounting plate (12) are spaced apart, and the connecting pipe (13) is connected between the first mounting plate (11) and the second mounting plate (12).

9. A seat, characterized in that, The seat includes the seat leg support mechanism according to any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the seat according to claim 9.

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