Leg support device, seat and vehicle

Abstract

The utility model provides a leg support device, a seat and a vehicle. The leg support device comprises a first transmission mechanism, a second transmission mechanism, a seat cushion framework and a leg support assembly. The first transmission mechanism is rotationally connected with the seat cushion framework, the second transmission mechanism is movably connected with the first transmission mechanism, the second transmission mechanism is fixedly connected with the seat cushion framework, and the second transmission mechanism is connected with the leg support assembly; the first transmission mechanism is used for driving the inclination angle of the seat cushion framework to change and driving the leg support assembly to be switched between the storage state and the stretching state. A set of driving piece is adopted, linkage of the inclination angle of the seat cushion framework and the adjustment process of the telescopic state of the leg support is achieved, the complexity of the device is reduced, and a certain space size is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a leg support device, a seat and a vehicle. Background Art

[0002] Zero-gravity seats refer to zero-gravity healthy posture seats. Sitting on this type of seat can present the most comfortable sitting posture, simulating the sitting posture in an aviation environment, and ensuring the comfort of the driver and passengers to the greatest extent. Zero-gravity seats have been widely used in the field of vehicle technology, not only limited to large sedans, but also increasingly used in ordinary sedans or coupes.

[0003] During the seat adjustment process, the seat cushion part and the leg support part are generally adjusted. For example, the front end of the seat cushion is tilted up and the leg support part is stretched to cooperate in achieving the rearward leaning posture of the occupant.

[0004] In the related art, two sets of driving mechanisms are generally provided to respectively adjust the inclination of the seat cushion part and the extension and retraction of the leg rest part. The devices are relatively complex and occupy a large space, and are not applicable to coupe-type vehicles with a smaller space. Utility Model Content

[0005] The purpose of the embodiments of the utility model is to provide a leg support device, a seat and a vehicle, which can solve the problem of high complexity of the driving mechanism device in the related art.

[0006] In order to solve the above technical problems, the utility model is achieved as follows:

[0007] In a first aspect, an embodiment of the utility model provides a leg support device, including a first transmission mechanism, a second transmission mechanism, a seat cushion frame and a leg support assembly;

[0008] The first transmission mechanism is rotatably connected to the seat cushion frame, the second transmission mechanism is movably connected to the first transmission mechanism, the second transmission mechanism is fixedly connected to the seat cushion frame, and the second transmission mechanism is connected to the leg support assembly;

[0009] The first transmission mechanism is used to drive the inclination angle of the seat cushion frame to change, and drive the leg support assembly to switch between a storage state and an extended state.

[0010] Optionally, the leg support device further comprises a support member;

[0011] The seat cushion frame is rotatably connected to one end of the first transmission mechanism, and the other end of the first transmission mechanism is rotatably connected to the support member. The first transmission mechanism is used to drive the change of the inclination angle of the seat cushion frame relative to the support member.

[0012] Optionally, the leg rest assembly includes a telescopic structure and a leg rest body;

[0013] The telescopic structure is movably connected to the second transmission mechanism, and the leg rest body is connected to the telescopic structure. The first transmission mechanism is used to drive the telescopic structure to move toward or away from the seat cushion frame through the second transmission mechanism, so that the leg rest body can switch between a stored state and an extended state.

[0014] Optionally, the second transmission mechanism includes a first transmission member, a first fixing rod and a first transmission rod;

[0015] The first fixing rod is fixedly connected to the seat cushion frame, the first transmission member is rotatably connected to the first transmission mechanism, the first fixing rod and the first transmission rod, the first transmission rod is movably connected to the leg rest assembly, and the first fixing rod is fixedly connected to the leg rest assembly.

[0016] Optionally, one end of the first fixing rod is fixed to one side of the seat cushion frame, and the other end of the first fixing rod is fixed to the other side of the seat cushion frame.

[0017] Optionally, the first transmission member includes a first connecting portion, a second connecting portion and a third connecting portion which are connected to each other;

[0018] The first transmission mechanism is rotatably connected to the first connection portion, the first fixing rod is rotatably connected to the second connection portion, and the first transmission rod is rotatably connected to the third connection portion.

[0019] Optionally, the telescopic structure includes a connecting member and a connecting rod mechanism;

[0020] The first transmission rod is slidably connected to the connecting member, one side of the connecting rod mechanism is rotationally connected to the first transmission rod and slides and rotates relative to the connecting member, one side of the connecting rod mechanism is rotationally connected to the connecting member, the other side of the connecting rod mechanism is connected to the leg support body, and the connecting member is fixedly connected to the first fixing rod.

[0021] Optionally, the connecting rod mechanism includes a first connecting rod, a second connecting rod and a third connecting rod;

[0022] One end of the first connecting rod is rotatably connected to the first transmission rod, and under the drive of the first transmission rod, the first connecting rod slides and rotates relative to the connecting piece, the other end of the first connecting rod is rotatably connected to the leg support body, one end of the second connecting rod is rotatably connected to the connecting piece, the second connecting rod is rotatably connected to the first connecting rod, the other end of the second connecting rod is rotatably connected to one end of the third connecting rod, and the other end of the third connecting rod is rotatably connected to the leg support body.

[0023] Optionally, the linkage mechanism further includes a fourth linkage;

[0024] The fourth connecting rod is fixed to the leg support body, and the fourth connecting rod is rotatably connected to the first connecting rod and the third connecting rod respectively on a side away from the leg support body.

[0025] Optionally, the first transmission mechanism includes a second transmission member and a second transmission rod;

[0026] The second transmission rod is suitable for being connected to the first driving member, the second transmission rod is fixedly connected to the second transmission member, and the second transmission member is rotationally connected to the second transmission mechanism.

[0027] Optionally, the first transmission mechanism further includes a third transmission member and a fourth transmission member;

[0028] The third transmission member and the fourth transmission member are rotationally connected to the second transmission rod at the same time, the third transmission member is rotationally connected to the seat cushion frame, and the fourth transmission member is rotationally connected to the support member.

[0029] Optionally, the leg support body includes a fixed plate and a sliding plate;

[0030] The fixed plate is rotatably connected to the other end of the first connecting rod and the other end of the third connecting rod, and the sliding plate is slidably connected to the fixed plate.

[0031] Optionally, a second sliding groove is provided on the fixed plate, and the sliding plate is slidably connected in the second sliding groove.

[0032] Optionally, the seat cushion frame is provided with an escape opening for providing space for the telescopic structure to extend and retract.

[0033] Optionally, the leg support device further comprises a first driving member;

[0034] The first driving member is fixedly connected to the seat cushion frame, and the first driving member is connected to the first transmission mechanism.

[0035] In a second aspect, an embodiment of the utility model provides a seat, comprising a leg support device as described in any one of the above items.

[0036] Optionally, the seat further comprises a second driving member and a third transmission mechanism;

[0037] The second driving member is connected to the third transmission mechanism, the third transmission mechanism is rotationally connected to the seat cushion frame, and the second driving member is used to drive the third transmission mechanism to move, so as to drive the seat cushion frame to move along the gravity direction.

[0038] Optionally, the seat further comprises a backrest frame;

[0039] The backrest frame is connected to the seat cushion frame, and the backrest frame is an integrated die-casting part.

[0040] Optionally, the seat further comprises a third driving member;

[0041] The third driving member is slidably connected to the seat cushion frame, and the third driving member is used to drive the seat cushion frame to slide in a horizontal direction.

[0042] Optionally, a first reinforcing rib is provided on the seat cushion frame, and / or a second reinforcing rib is provided in the backrest frame.

[0043] In a third aspect, an embodiment of the utility model provides a vehicle, comprising any seat described above.

[0044] In an embodiment of the utility model, the first transmission mechanism is rotationally connected to the seat cushion frame, the second transmission mechanism is movably connected to the first transmission mechanism, the second transmission mechanism is fixed to the seat cushion frame at the same time, and the second transmission mechanism is movably connected to the leg rest assembly. When driven by the driving member, on the one hand, the first transmission mechanism can drive the change of the inclination angle of the seat cushion frame; on the other hand, the first transmission mechanism can also drive the movement of the second transmission mechanism, thereby driving the leg rest assembly to switch between the storage state and the extension state. Therefore, the utility model adopts a set of driving members to drive the movement of the seat cushion frame and the leg rest assembly at the same time, thereby realizing the linkage of the inclination angle of the seat cushion frame and the telescopic state adjustment process of the leg rest, reducing the complexity of the device and saving a certain space size.

[0045] The seat and vehicle provided in this embodiment have the same technical advantages as the leg support device provided in this embodiment, which will not be elaborated here.

[0046] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0048] Figure 1 It is a schematic diagram of the seat structure provided by an embodiment of the utility model;

[0049] Figure 2 It is an exploded view of the seat structure provided by the embodiment of the utility model;

[0050] Figure 3 This is a schematic diagram of the connection structure of the first and second transmission mechanisms in the embodiment of the utility model;

[0051] Figure 4 This is a schematic diagram of the third transmission mechanism in the embodiment of the utility model;

[0052] Figure 5 It is a transmission schematic diagram of the seat cushion frame and the leg support assembly adjustment part in the embodiment of the utility model;

[0053] Figure 6 This is a schematic diagram of the structure of the leg support assembly in the embodiment of the utility model;

[0054] Figure 7 This is a schematic diagram of the seat cushion framework structure in an embodiment of the utility model;

[0055] Figure 8 It is a schematic diagram of the backrest frame structure in an embodiment of the utility model.

[0056] Description of reference numerals:

[0057] 1-support member, 2-first driving member, 21-screw rod, 3-first transmission mechanism, 31-second transmission member, 32-third transmission member, 33-fourth transmission member, 34-second transmission rod, 4-second transmission mechanism, 41-first transmission member, 411-first connecting part, 412-second connecting part, 413-third connecting part, 42-first fixing rod, 421-fixing part, 43-first transmission rod, 5-seat cushion frame, 51-second fixing rod, 52-first reinforcing rib, 53-avoidance port, 54-first mounting hole, 55 -Second mounting hole, 56-third mounting hole, 57-fourth mounting hole, 58-third fixing rod, 59-sit basin, 6-leg support assembly, 61-connecting piece, 611-first slide groove, 62-connecting rod mechanism, 621-first connecting rod, 622-second connecting rod, 623-third connecting rod, 624-fourth connecting rod, 63-leg support body, 631-fixed plate, 6311-second slide groove, 632-sliding plate, 7-third transmission mechanism, 8-backrest frame, 81-backrest reinforcement plate, 82-second reinforcement rib, 9-third driving member. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0059] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the utility model can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0060] The leg support device, seat and vehicle provided by the embodiments of the utility model are described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0061] Reference Figures 1 to 3 The embodiment of the utility model provides a leg rest device, including a first transmission mechanism 3, a second transmission mechanism 4, a seat cushion frame 5 and a leg rest assembly 6; the first transmission mechanism 3 is rotatably connected to the seat cushion frame 5, the second transmission mechanism 4 is movably connected to the first transmission mechanism 3, the second transmission mechanism 4 is fixedly connected to the seat cushion frame 5, and the second transmission mechanism 4 is connected to the leg rest assembly 6; the first transmission mechanism 3 is used to drive the inclination angle of the seat cushion frame 5 to change, and drive the leg rest assembly 6 to switch between a storage state and an extended state.

[0062] Optionally, the leg support device further includes a first driving member 2 ; the first driving member 2 is fixedly connected to the seat cushion frame 5 , and the first driving member 2 is connected to the first transmission mechanism 3 .

[0063] Specifically, if Figures 1 to 3 As shown, in the leg support device provided in the embodiment of the utility model, the seat cushion frame 5 is the main body of the seat cushion assembly, on which a seat basin 59 is installed to support the buttocks and thighs of the crew member. A first driving member 2 is fixed to the inner side of the seat cushion frame 5, and the power output end of the first driving member 2 is connected to the first transmission mechanism 3. The first driving member 2 converts electrical energy into mechanical energy of linear motion, and outputs it to the first transmission mechanism 3 from the power output end. Figure 3As shown, the interior of the first driving member 2 is designed as a worm gear structure. When the motor of the first driving member 2 is powered on, the screw 21 at the output end performs linear motion, synchronously pushing the first transmission mechanism 3 to perform linear motion relative to the fixed point of the first driving member 2. The first transmission mechanism 3 is rotationally connected to the seat cushion frame 5. The form adopted by the first transmission mechanism 3 includes but is not limited to a connecting rod motion mechanism or a gear train motion mechanism, which has parts that can rotate relative to each other. When the first driving member 2 drives the first transmission mechanism 3 to move, it also drives the inclination angle of the seat cushion frame 5 relative to the horizontal plane to change. As shown in FIG. Figure 7 As shown, in this embodiment, the connection point between the seat cushion frame 5 and the first transmission mechanism 3 is located at the second mounting hole 55 at the front end of the seat cushion frame 5, that is, through the first transmission mechanism 3, the inclination angle of the front end of the seat cushion frame 5 relative to the horizontal plane is driven to change, so as to meet the comfortable relaxation posture of the driver and passengers. In addition, the second transmission mechanism 4 is movably connected to the first transmission mechanism 3, one side of the second transmission mechanism 4 is fixedly connected to the seat cushion frame 5, and the other side of the second transmission mechanism 4 is movably connected to the leg support assembly 6. Therefore, driven by the first transmission mechanism 3, the second transmission mechanism 4 transmits power to the leg support assembly 6, so that the leg support assembly 6 changes between the storage state and the extension state relative to the seat cushion frame 5. The second transmission mechanism 4 of this embodiment adopts a mutually hinged connecting rod motion mechanism.

[0064] The first driving member 2 in this embodiment is called a tilt motor. When it is started to run by the motion command of the control end, the power is transmitted from its output end to the first transmission mechanism 3 to drive the first transmission mechanism 3 to move. On the one hand, the first transmission mechanism 3 can drive the seat cushion frame 5 to move, so that the tilt angle of the seat cushion frame 5 relative to the horizontal plane changes; on the other hand, the first transmission mechanism 3 can also drive the second transmission mechanism 4 to move, thereby driving the leg support assembly 6 to switch between the storage state and the extension state. Specifically, when the first driving member 2 drives the first transmission mechanism 3 to move toward the fixed end away from the first driving member 2, the rear end position of the seat cushion frame 5 remains unchanged, and the front end of the seat cushion frame 5 is driven by the first transmission mechanism 3, and the front end of the seat cushion frame 5 is tilted relative to the horizontal plane, and the leg support assembly 6 is extended. At this time, the seat is unfolded as a whole, which can provide a more comfortable lying state for the driver and passengers. On the contrary, when the first driving member 2 rotates in the opposite direction, the tilt angle of the seat cushion frame 5 relative to the horizontal plane becomes smaller, and the leg support assembly 6 is retracted.

[0065] The seat provided by this embodiment, on the one hand, drives the movement of the seat frame and the leg rest assembly at the same time through a set of driving parts, realizes the linkage of the inclination angle of the seat frame and the adjustment process of the telescopic state of the leg rest, reduces the complexity of the device, and saves a certain space size. On the other hand, in a small coupe, the angle between the calf and the thigh of the driver and passenger is large, and the demand for telescopic adjustment of the leg rest is not large in a normal sitting position. When the front end of the seat cushion is gradually adjusted to a tilted zero gravity state, adjusting the leg rest at the same time can provide a more comfortable resting posture. In other words, in a small coupe, it is of certain practical significance to adjust the leg rest and the seat cushion at the same time.

[0066] Optionally, refer to Figure 1 and Figure 2 The leg support device also includes a support member 1; the seat cushion frame 5 is rotatably connected to one end of the first transmission mechanism 3, and the other end of the first transmission mechanism 3 is rotatably connected to the support member 1, and the first transmission mechanism 3 is used to drive the inclination angle of the seat cushion frame 5 relative to the support member 1 to change.

[0067] Specifically, if Figure 1 and Figure 2 As shown, the support member 1 is the installation base and rigid support structure of the leg support device and the seat, and is fixed horizontally to the ground. A support member 1 is provided on both sides of the seat cushion frame 5. The upper end of the first transmission mechanism 3 is rotationally connected to the front end position of the seat cushion frame 5, and the lower end of the first transmission mechanism 3 is rotationally connected to the support member 1. Driven by the first driving member 2, the first transmission mechanism 3 drives the inclination angle of the seat cushion frame 5 relative to the support member 1 to change. Specifically, when the first transmission mechanism 3 drives the front end of the seat cushion frame 5 to lift, the inclination angle of the seat cushion frame 5 relative to the support member 1 becomes larger; when the first transmission mechanism 3 drives the front end of the seat cushion frame 5 to descend, the inclination angle of the seat cushion frame 5 relative to the support member 1 becomes smaller.

[0068] Optionally, refer to Figures 1 to 3 The leg rest assembly 6 includes a telescopic structure and a leg rest body 63; the telescopic structure is movably connected to the second transmission mechanism 4, and the leg rest body 63 is connected to the telescopic structure. The first transmission mechanism 3 is used to drive the telescopic structure to move toward or away from the seat cushion frame 5 through the second transmission mechanism 4, so that the leg rest body 63 can switch between a stored state and an extended state.

[0069] Specifically, if Figures 1 to 3As shown, one end of the telescopic structure away from the second transmission mechanism 4 is connected to the leg rest body 63. The telescopic structure can be driven by the second transmission mechanism 4 to undergo telescopic changes, so that the leg rest body 63 is away from or close to the seat cushion frame 5. Specifically, when the telescopic structure is extended under the drive of the second transmission mechanism 4, the leg rest body 63 is away from the seat cushion frame 5, providing a more comfortable lying posture for the driver and passengers. When the telescopic structure is retracted under the drive of the second transmission mechanism 4, the leg rest body 63 is close to the seat cushion frame 5. The telescopic structure can be set as a telescopic bracket or a connecting rod mechanism.

[0070] Optionally, refer to Figure 1 and Figure 3 The second transmission mechanism 4 includes a first transmission member 41, a first fixing rod 42 and a first transmission rod 43; the first fixing rod 42 is fixedly connected to the seat cushion frame 5, the first transmission member 41 is rotatably connected to the first transmission mechanism 3, the first fixing rod 42 and the first transmission rod 43, the first transmission rod 43 is movably connected to the leg support assembly 6, and the first fixing rod 42 is fixedly connected to the leg support assembly 6.

[0071] Specifically, if Figure 1 and Figure 3 As shown, the second transmission mechanism 4 includes a first transmission member 41, a first fixed rod 42 and a first transmission rod 43. The first transmission member 41 has three connection points, wherein the first connection point is rotationally connected to the first transmission mechanism 3, the second connection point is rotationally connected to the first fixed rod 42, and the third connection point is rotationally connected to the first transmission rod 43. The first transmission rod 43 is movably connected to the leg support assembly 6, and the leg support assembly 6 is fixedly connected to the first fixed rod 42. Along the thickness direction of the first transmission member 41, the first fixed rod 42 and the first transmission rod 43 are penetrated on the first transmission member 41, and the first transmission member 41 is hinged to the first transmission mechanism 3. Specifically, when the first transmission mechanism 3 drives the first transmission member 41 to rotate, since the first fixed rod 42 is fixedly connected to the seat cushion frame 5, the first transmission rod 43 is driven to rotate relative to the first fixed rod 42, and the power is transmitted to the leg support assembly 6, so that the telescopic state of the leg support assembly 6 changes. At the same time, the leg support assembly 6 is welded to the fixing portion 421 of the first fixed rod 42. Therefore, in this example, the power transmitted by the first transmission mechanism 3 is transmitted to the leg rest assembly 6 through the connection structure of the first transmission member 41, so that the leg rest can be adjusted in telescopic state while adjusting the seat cushion inclination angle.

[0072] Optionally, refer to Figure 2 and Figure 3 One end of the first fixing rod 42 is fixed to one side of the seat cushion frame 5 , and the other end of the first fixing rod 42 is fixed to the other side of the seat cushion frame 5 .

[0073] Specifically, if Figure 2 and Figure 3 As shown, both ends of the first fixing rod 42 have fixing parts 421, the fixing part 421 at one end is fixed to one side of the seat cushion frame 5, and the fixing part 421 at the other end is fixed to the other side of the seat cushion frame 5. The fixing part 421 is fixedly mounted at the first mounting hole 54 of the seat cushion frame 5. The fixing part 421 is plate-shaped to improve the fixing reliability between the seat cushion frame 5 and the seat cushion frame 5.

[0074] Optionally, refer to Figure 3 and Figure 5 The first transmission member 41 includes a first connection part 411, a second connection part 412 and a third connection part 413 which are connected to each other; the first transmission mechanism 3 is rotationally connected to the first connection part 411, the first fixing rod 42 is rotationally connected to the second connection part 412, and the first transmission rod 43 is rotationally connected to the third connection part 413.

[0075] Specifically, if Figure 3 and Figure 5 As shown, the shape of the first transmission member 41 includes but is not limited to a triangle or a quadrilateral. The first transmission member 41 includes a first connection portion 411, a second connection portion 412 and a third connection portion 413 that are interconnected. The three connection portions can be connected as one piece or separately. In this embodiment, an integrated first transmission member 41 is provided, and the shape of the first transmission member 41 is close to a triangle. The three vertices of the first transmission member 41 correspond to one of the first connection portion 411, the second connection portion 412 and the third connection portion 413, respectively. Driven by the first transmission mechanism 3, the first connection portion 411 rotates relative to the first transmission mechanism 3, the second connection portion 412 rotates relative to the first fixed rod 42, and the third connection portion 413 drives the first transmission rod 43 to rotate, and drives the movement of the leg support assembly 6.

[0076] Optionally, refer to Figure 3 and Figure 6 The telescopic structure includes a connecting member 61 and a connecting rod mechanism 62; the first transmission rod 43 is slidably connected to the connecting member 61, one side of the connecting rod mechanism 62 is rotationally connected to the first transmission rod 43 and slides and rotates relative to the connecting member 61, one side of the connecting rod mechanism 62 is rotationally connected to the connecting member 61, and the other side of the connecting rod mechanism 62 is connected to the leg support body 63, and the connecting member 61 is fixedly connected to the first fixed rod 42.

[0077] Specifically, if Figure 3 and Figure 6As shown, the connecting member 61 is used to fix the leg support assembly 6, also known as the leg support fixing plate. The connecting member 61 is welded to the fixing portion 421 of the first fixing rod 42. The connecting member 61 is fixed relative to the seat cushion frame 5. A first slide groove 611 is provided on the connecting member 61. The main body of the telescopic structure is a connecting rod mechanism 62, which is a scissor-type multi-link mechanism. A first slide groove 611 is provided on the connecting member 61. The first transmission rod 43 is slidably connected in the first slide groove 611, and the first transmission rod 43 is hinged to one side of the connecting rod mechanism 62 to achieve rotational connection. Driven by the first transmission rod 43, one side of the connecting rod mechanism 62 rotates while sliding relative to the connecting member 61. Another position on one side of the connecting rod mechanism 62 is hinged to achieve rotational connection with the connecting member, and the other side of the connecting rod mechanism 62 is connected to the leg support body 63. Driven by the first transmission rod 43, the different connecting rods of the connecting rod mechanism 62 are telescopically changed, so that the leg support body 63 switches between the unfolded and stored states.

[0078] Optionally, refer to Figure 3 and Figure 6 The connecting rod mechanism includes a first connecting rod 621, a second connecting rod 622 and a third connecting rod 623; one end of the first connecting rod 621 is rotatably connected to the first transmission rod 43, and under the drive of the first transmission rod 43, the first connecting rod 621 slides and rotates relative to the connecting member 61, the other end of the first connecting rod 621 is rotatably connected to the leg support body 63, one end of the second connecting rod 622 is rotatably connected to the connecting member 61, the second connecting rod 622 is rotatably connected to the first connecting rod 621, the other end of the second connecting rod 622 is rotatably connected to one end of the third connecting rod 623, and the other end of the third connecting rod 623 is rotatably connected to the leg support body 63.

[0079] Specifically, if Figure 3 and Figure 6As shown, the connecting rod mechanism 62 includes a first connecting rod 621, a second connecting rod 622 and a third connecting rod 623 which are connected to each other. Among them, the first end of the first connecting rod 621 is rotatably connected to the first transmission rod 43 as the power input end of the connecting rod mechanism 62. At the same time, the first end of the first connecting rod 621 rotates while sliding relative to the connecting member 61 under the drive of the first transmission rod 43, and the first end of the second connecting rod 622 is rotatably connected to the connecting member 61 as the movable connecting end of the connecting rod mechanism 62. The middle part of the first connecting rod 621 and the middle part of the second connecting rod 622 are rotatably connected by riveting, the second end of the first connecting rod 621 is rotatably connected to the leg support body 63, the second end of the second connecting rod 622 is rotatably connected to the first end of the third connecting rod 623, and the other end of the third connecting rod 623 is rotatably connected to the leg support body 63. When the first transmission rod 43 transmits power to the first connecting rod 621, the first connecting rod 621 performs linear motion relative to the first sliding groove 611, and drives the second connecting rod 622 and the third connecting rod 623 to rotate. Specifically, Figure 6 As shown, when the first link 621 moves relative to the first slide slot 611 along the A2 direction, the link mechanism 62 contracts and the leg support body 63 is retracted; when the first link 621 moves relative to the first slide slot 611 along the A1 direction, the link mechanism 62 extends and the leg support body 63 is unfolded. Therefore, by setting the link structure, the link mechanism 62 is extended and retracted to allow the leg support body 63 to be unfolded or retracted.

[0080] Optionally, refer to Figure 3 and Figure 6 The connecting rod mechanism also includes a fourth connecting rod 624; the fourth connecting rod 624 is fixed to the leg support body 63, and the fourth connecting rod 624 is rotatably connected to the first connecting rod 621 and the third connecting rod 623 respectively away from the side of the leg support body 63.

[0081] Specifically, if Figure 3 and Figure 6 As shown, the fourth link 624 is fixed to the leg support body 63 and is rotatably connected to the outer sides of the first link 621 and the third link 623. On the one hand, the fourth link 624 is used to limit the first link 621 and the third link 623 to prevent slipping during the rotation process; on the other hand, the fixed position of the fourth link 624 can be adjusted to meet different seat usage requirements.

[0082] Optionally, refer to Figure 3 The first transmission mechanism 3 includes a second transmission member 31 and a second transmission rod 34; the second transmission rod 34 is suitable for connecting with the first driving member 2, the second transmission rod 34 is fixedly connected to the second transmission member 31, and the second transmission member 31 is rotationally connected to the second transmission mechanism 4.

[0083] Optionally, refer to Figure 3The first transmission mechanism 3 also includes a third transmission member 32 and a fourth transmission member 33, and the third transmission member 32 and the fourth transmission member 33 are rotationally connected to the second transmission rod 34 at the same time, the third transmission member 32 is rotationally connected to the seat cushion frame 5, and the fourth transmission member 33 is rotationally connected to the support member 1.

[0084] Specifically, if Figure 3 As shown, the first transmission mechanism 3 includes a second transmission member 31, a third transmission member 32, a fourth transmission member 33 and a second transmission rod 34. The screw rod of the first driving member 2 is hinged to the second transmission rod 34, the middle part of the second transmission rod 34 is rotationally connected to one side of the second transmission member 31, and the other side of the second transmission member 31 is rotationally connected to the first transmission member 41. Driven by the second transmission rod 34, the driving force is transmitted from the second transmission member 31 to the first transmission member 41, thereby driving the movement of the leg support assembly 6.

[0085] Each end of the second transmission rod 34 is rotatably connected to the third transmission member 32 and the fourth transmission member 33. The third transmission member 32 is rotatably connected to the second fixing rod 51 fixed to the seat cushion frame 5, and the second fixing rod 51 is fixed to the second mounting hole 55 of the seat cushion frame 5. The rotational connection between the third transmission member 32 and the seat cushion frame 5 is realized. The fourth transmission member 33 is rotatably connected to the support member 1. The movement of the third transmission member 32 and the fourth transmission member 33 realizes the change of the inclination angle of the seat cushion frame 5.

[0086] Combination Figure 5 As shown in the figure, when the first driving member 2 is powered on, the second transmission rod 34 is driven to generate linear motion relative to the fixed point of the first driving member 2, i.e., the seat cushion frame 5, and the movements of the third transmission member 32 and the fourth transmission member 33 are both relatively rotated relative to the second transmission rod 34, thereby driving the inclination angle of the seat cushion frame 5 relative to the support member 1 to change. At the same time, the second transmission member 31 transmits power to the first transmission member 41, and the first transmission member 41 rotates relative to the first fixed rod 42 and the seat cushion frame 5, thereby driving the movement of the first transmission rod 43. The first transmission rod 43 transmits power to the first connecting rod 621, so that the first connecting rod 621 moves relative to the first sliding groove 611 of the connecting member 61, driving the overall connecting rod mechanism 62 to produce telescopic changes, and the leg support body 63 is unfolded or retracted accordingly.

[0087] Optionally, refer to Figure 3 and Figure 6 The leg support body 63 includes a fixed plate 631 and a sliding plate 632; the fixed plate 631 is rotatably connected to the other end of the first connecting rod 621 and the other end of the third connecting rod 623, and the sliding plate 632 is slidably connected to the fixed plate 631.

[0088] Optionally, the fixing plate 631 is provided with a second sliding groove 6311, and the sliding plate 632 is slidably connected in the second sliding groove 6311. Figure 3 and Figure 6 As shown, the leg rest body 63 includes a fixed plate 631 and a sliding plate 632. The fixed plate 631 is fixedly connected to the fourth connecting rod 624, and a second slide groove 6311 is provided on the fixed plate 631, and the second slide groove 6311 has multiple gears. The sliding plate 632 is slidably connected in the second slide groove 6311. When the connecting rod mechanism 62 drives the leg rest body 63 to unfold, the driver and the passenger can manually open the sliding plate 632 to increase the length of the leg rest body 63 to adapt to the rest needs of drivers and passengers of different body shapes. In addition, in another embodiment, a motor is provided to drive the sliding plate 632 to slide in the second slide groove 6311 to realize an automatic adjustment function.

[0089] Optionally, refer to Figure 1 and Figure 7 The seat cushion frame 5 is provided with an escape opening 53 for providing space for the connecting rod mechanism 62 to extend and retract.

[0090] Specifically, if Figure 1 and Figure 7 As shown, the seat cushion frame 5 is provided with an escape opening 53 , and when the leg support body 63 needs to be unfolded, the connecting rod mechanisms 62 on both sides extend out from the escape opening 53 .

[0091] An embodiment of the utility model further provides a seat, comprising the leg support device described in any one of the above items.

[0092] Optionally, refer to Figure 1 , Figure 2 and Figure 4 The seat also includes a second driving member and a third transmission mechanism 7; the second driving member is connected to the third transmission mechanism 7, and the third transmission mechanism 7 is rotationally connected to the seat cushion frame 5, and the second driving member is used to drive the third transmission mechanism 7 to move, so as to drive the seat cushion frame 5 to move along the direction of gravity.

[0093] Specifically, if Figure 1 , Figure 2 , Figure 4 and Figure 7As shown, the second driving member, i.e., the lifting motor, is connected between the seat cushion frame 5 and the support member 1, i.e., the second driving member is fixed on the seat cushion frame 5 or the support member 1. In this example, the second driving member is fixed to the third mounting hole 56 at the rear end of the seat cushion frame 5. A third fixing rod 58 is fixed at the fourth mounting hole 57, and the upper end of the third transmission mechanism 7 is rotatably connected to the third fixing rod 58 to achieve relative rotation between the third transmission mechanism 7 and the seat cushion frame 5, and the lower end of the third transmission mechanism 7 is rotatably connected to the support member 1. The third transmission mechanism 7 is also called a lifting gear plate. When the second driving member is powered on, it drives the third transmission mechanism 7 to rotate around the lower end, thereby driving the distance between the seat cushion frame 5 and the support member 1 to change, i.e., the height of the seat cushion frame 5 changes. At the same time, the height of the seat cushion frame 5 changes, driving the fourth transmission member 33 on the front side to rotate around the connection between its lower end and the support member 1. Therefore, the third transmission mechanism 7 and the fourth transmission member 33 swing simultaneously to realize a quadrilateral swing form, driving the entire seat to rise and fall. The characteristic of this swing form is that the seat is driven forward while the seat is rising, and the seat is driven backward while the seat is falling. The first driving member 2 and the second driving member of this embodiment operate independently, realizing the independent operation of the two processes of seat lifting adjustment and seat cushion inclination and push-off and stretch-off linkage adjustment.

[0094] Optionally, refer to Figure 1 and Figure 8 The seat further comprises a backrest frame 8; the backrest frame 8 is connected to the seat cushion frame 5, and the backrest frame 8 is an integral die-casting.

[0095] Specifically, if Figure 1 and Figure 8 As shown, the backrest frame 8 is rotatably connected to the seat cushion frame 5. Driven by the motor, the backrest frame 8 rotates relative to the seat cushion frame 5 to adjust the angle of the backrest. The backrest frame 8 adopts an integrated aluminum-magnesium alloy die-casting process. Compared with the existing technology of splicing multiple side panels, it reduces the number of parts used and reduces the overall weight of the seat while ensuring the connection strength, which meets the lightweight requirements of the vehicle. At the same time, a backrest reinforcement plate 81 is riveted and installed on the outer side of the backrest frame 8 to improve the instantaneous impact resistance of the backrest frame 8. In order to adapt to different seat appearances, a steel wire support structure can be added to fit different seat appearance surfaces.

[0096] Optionally, refer to Figure 1 and Figure 2 , the seat further comprises a third driving member 9; the third driving member 9 is slidably connected to the seat cushion frame 5, and the third driving member 9 is used to drive the seat cushion frame 5 to slide in a horizontal direction.

[0097] Specifically, if Figure 1 and Figure 2As shown, the third driving member 9 is connected between the seat cushion frame 5 and the support member 1, that is, the second driving member is fixed on the seat cushion frame 5 or the support member 1. In this example, the second driving member is fixed on the support member 1 and is slidably connected with the seat cushion frame 5 to drive the seat cushion frame 5 to slide in the horizontal direction relative to the support member 1 to achieve the front and rear adjustment of the seat in the horizontal direction. The sliding adjustment and inclination adjustment functions of the seat cushion frame 5 in the horizontal direction are independent and are driven by different drive motors.

[0098] Optionally, refer to Figure 1 and Figure 7 The seat cushion frame 5 is provided with a first reinforcing rib 52 , and / or the backrest frame 8 is provided with a second reinforcing rib 82 .

[0099] Specifically, if Figure 1 and Figure 7 As shown, the inner side of the backrest frame 8 is provided with a second reinforcing rib 82 arranged vertically and horizontally to ensure the structural strength of the backrest frame 8. The seat cushion frame 5 is provided with a first reinforcing rib 52. In addition, the seat cushion frame 5 and the seat pan 59 are an integral part, which is formed by an integrated stamping process. The seat pan 59 is also provided with reinforcing ribs to ensure the anti-diving strength. The seat cushion frame 5 is a platform part. In order to meet the appearance design of different coupe seats, a steel wire support structure can be provided on the seat cushion frame 5 to fit different appearance surfaces.

[0100] The embodiment of the utility model also provides a vehicle, which adopts the seat provided by the embodiment, reduces the complexity of the seat cushion inclination adjustment and leg support adjustment device, and increases the usable space in the cabin.

[0101] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0102] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A leg support device, characterized in that: It comprises a first transmission mechanism (3), a second transmission mechanism (4), a seat cushion frame (5) and a leg support assembly (6); The first transmission mechanism (3) is rotatably connected to the seat cushion frame (5), the second transmission mechanism (4) is movably connected to the first transmission mechanism (3), the second transmission mechanism (4) is fixedly connected to the seat cushion frame (5), and the second transmission mechanism (4) is connected to the leg support assembly (6); The first transmission mechanism (3) is used to drive the inclination angle of the seat cushion frame (5) to change, and to drive the leg support assembly (6) to switch between a stored state and an extended state.

2. The leg support device according to claim 1, characterized in that: The leg support device also includes a support member (1); The seat cushion frame (5) is rotationally connected to one end of the first transmission mechanism (3), and the other end of the first transmission mechanism (3) is rotationally connected to the support member (1). The first transmission mechanism (3) is used to drive the seat cushion frame (5) to change its inclination angle relative to the support member (1).

3. The leg support device according to claim 1, characterized in that: The leg support assembly (6) comprises a telescopic structure and a leg support body (63); The telescopic structure is movably connected to the second transmission mechanism (4), and the leg rest body (63) is connected to the telescopic structure. The first transmission mechanism (3) is used to drive the telescopic structure to move toward or away from the seat cushion frame (5) through the second transmission mechanism (4), so that the leg rest body (63) can switch between a stored state and an extended state.

4. The leg support device according to claim 3, characterized in that: The second transmission mechanism (4) comprises a first transmission member (41), a first fixing rod (42) and a first transmission rod (43); The first fixing rod (42) is fixedly connected to the seat cushion frame (5); the first transmission member (41) is rotationally connected to the first transmission mechanism (3), the first fixing rod (42) and the first transmission rod (43); the first transmission rod (43) is movably connected to the leg support assembly (6); and the first fixing rod (42) is fixedly connected to the leg support assembly (6).

5. The leg support device according to claim 4, characterized in that: One end of the first fixing rod (42) is fixed to one side of the seat cushion frame (5), and the other end of the first fixing rod (42) is fixed to the other side of the seat cushion frame (5).

6. The leg support device according to claim 4, characterized in that: The first transmission member (41) comprises a first connecting portion (411), a second connecting portion (412) and a third connecting portion (413) which are connected to each other; The first transmission mechanism (3) is rotationally connected to the first connection part (411), the first fixing rod (42) is rotationally connected to the second connection part (412), and the first transmission rod (43) is rotationally connected to the third connection part (413).

7. The leg support device according to claim 4, characterized in that: The telescopic structure comprises a connecting piece (61) and a connecting rod mechanism (62); The first transmission rod (43) is slidably connected to the connecting member (61), one side of the connecting rod mechanism (62) is rotationally connected to the first transmission rod (43) and slides and rotates relative to the connecting member (61), one side of the connecting rod mechanism (62) is rotationally connected to the connecting member (61), the other side of the connecting rod mechanism (62) is connected to the leg support body (63), and the connecting member (61) is fixedly connected to the first fixed rod (42).

8. The leg support device according to claim 7, characterized in that: The connecting rod mechanism (62) comprises a first connecting rod (621), a second connecting rod (622) and a third connecting rod (623); One end of the first connecting rod (621) is rotatably connected to the first transmission rod (43). Driven by the first transmission rod (43), the first connecting rod (621) slides and rotates relative to the connecting member (61). The other end of the first connecting rod (621) is rotatably connected to the leg support body (63). One end of the second connecting rod (622) is rotatably connected to the connecting member (61). The second connecting rod (622) is rotatably connected to the first connecting rod (621). The other end of the second connecting rod (622) is rotatably connected to one end of the third connecting rod (623). The other end of the third connecting rod (623) is rotatably connected to the leg support body (63).

9. The leg support device according to claim 8, characterized in that: The connecting rod mechanism (62) further includes a fourth connecting rod (624); The fourth connecting rod (624) is fixed to the leg support body (63), and the fourth connecting rod (624) is rotatably connected to the first connecting rod (621) and the third connecting rod (623) respectively at a side away from the leg support body (63).

10. The leg support device according to claim 2, characterized in that: The first transmission mechanism (3) comprises a second transmission member (31) and a second transmission rod (34); The second transmission rod (34) is suitable for being connected to the first driving member (2), the second transmission rod (34) is fixedly connected to the second transmission member (31), and the second transmission member (31) is rotationally connected to the second transmission mechanism (4).

11. The leg support device according to claim 10, characterized in that: The first transmission mechanism (3) further comprises a third transmission member (32) and a fourth transmission member (33); The third transmission member (32) and the fourth transmission member (33) are simultaneously rotationally connected to the second transmission rod (34), the third transmission member (32) is rotationally connected to the seat cushion frame (5), and the fourth transmission member (33) is rotationally connected to the support member (1).

12. The leg support device according to claim 8, characterized in that: The leg support body (63) includes a fixed plate (631) and a sliding plate (632); The fixed plate (631) is rotatably connected to the other end of the first connecting rod (621) and the other end of the third connecting rod (623), and the sliding plate (632) is slidably connected to the fixed plate (631).

13. The leg support device according to claim 12, characterized in that: The fixed plate (631) is provided with a second sliding groove (6311), and the sliding plate (632) is slidably connected in the second sliding groove (6311).

14. The leg support device according to claim 3, characterized in that: The seat cushion frame (5) is provided with an escape opening (53) for providing space for the telescopic structure to extend and retract.

15. The leg support device according to claim 1, characterized in that: The leg support device also includes a first driving member (2); The first driving member (2) is fixedly connected to the seat cushion frame (5), and the first driving member (2) is connected to the first transmission mechanism (3).

16. A seat, characterized in that: A leg support device comprising any one of claims 1 to 14.

17. The seat according to claim 16, characterized in that The seat also includes a second driving member and a third transmission mechanism (7); The second driving member is connected to the third transmission mechanism (7), the third transmission mechanism (7) is rotationally connected to the seat cushion frame (5), and the second driving member is used to drive the third transmission mechanism (7) to move, so as to drive the seat cushion frame (5) to move along the direction of gravity.

18. The seat according to claim 16, characterized in that The seat also includes a backrest frame (8); The backrest frame (8) is connected to the seat cushion frame (5), and the backrest frame (8) is an integrated die-casting part.

19. The seat according to claim 16, characterized in that The seat also includes a third driving member (9); The third driving member (9) is slidably connected to the seat cushion frame (5), and the third driving member (9) is used to drive the seat cushion frame (5) to slide in a horizontal direction.

20. The seat according to claim 18, characterized in that The seat cushion frame (5) is provided with a first reinforcing rib (52), and / or the backrest frame (8) is provided with a second reinforcing rib (82).

21. A vehicle, characterized in that: A seat comprising the seat described in any one of claims 16 to 20.

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