Automobile seat and vehicle

Abstract

The application discloses a kind of automobile seat and vehicle, it is related to vehicle technical field.The automobile seat includes seat cushion and seat backrest, seat cushion contains installation framework, lifting framework and lifting drive mechanism, lifting framework can be moved relative to installation framework;Seat backrest contains rotatable installation backrest framework, with sitting state and bed state;Lifting drive mechanism drives lifting framework to descend or lift.This application can drive lifting framework to lift by lifting drive mechanism, eliminate the height difference between cushion and backrest in bed mode, realize the smooth transition of seat surface, improve lying comfort.

Description

Technical Field

[0001] This invention belongs to the field of vehicle technology, and particularly relates to an automobile seat and vehicle. Background Technology

[0002] As a core component of a vehicle's interior, car seats directly affect the comfort and safety of passengers and are widely used in various passenger cars, commercial vehicles, and special vehicles. With the development of the automotive industry and the increasing demand for multifunctional interior spaces, the function of car seats is no longer limited to traditional support and seating, but is gradually evolving towards adjustable and adaptable configurations. In existing technologies, to achieve rest or sleep functions, car seats are typically designed with a backrest tilting mechanism. A drive unit rotates the seat back backward, switching it from an upright seating position to a near-flat bed position. This process mainly relies on an articulated structure to adjust the angle of the backrest frame relative to the seat cushion frame, thereby creating a flat area for occupants to lie down within the limited interior space. This is currently the conventional technical approach for achieving in-vehicle rest functions.

[0003] However, in the process of converting car seats into a bed-like configuration, existing technologies have long faced the common technical bottleneck of insufficient flatness of the seat surface. Because the seat back and seat cushion are often structurally independent and have different height references, a significant height difference or step effect can easily form between the surface height of the backrest and the surface height of the seat cushion when the backrest is fully reclined. This discontinuity in height prevents the formation of a continuous, smooth lying surface, severely affecting the evenness of body support and overall comfort for the user in bed-like mode. Summary of the Invention

[0004] This invention provides an automobile seat and vehicle that can solve the technical problem that when the seat back is fully reclined, a significant height difference or step effect is easily formed between its surface height and the surface height of the seat cushion, making it impossible to form a continuous and smooth lying surface.

[0005] To address the aforementioned problems, in one aspect, embodiments of the present invention provide an automobile seat, comprising: A seat cushion includes a mounting frame, a lifting frame, and a lifting drive mechanism. The mounting frame is adapted to be mounted on a vehicle body. The lifting frame is mounted on the mounting frame and is movable relative to the mounting frame. The lifting drive mechanism is mounted on the mounting frame or the lifting frame and is used to drive the lifting frame to move relative to the mounting frame. A seat backrest, including a backrest frame, the backrest frame being rotatably mounted to the mounting frame so that the backrest frame has a sitting position and a bed position; The lifting drive mechanism is used to drive the lifting frame to move down or up relative to the mounting frame.

[0006] As a further improvement to the above technical solution: Optionally, the lifting drive mechanism drives the lifting frame to move relative to the mounting frame, so that the lifting frame has a first cushion state and a second cushion state. When the backrest frame is in the sitting state, the lifting frame is in the first seat cushion state; when the backrest frame is in the bed state, the lifting frame is in the second seat cushion state.

[0007] Optionally, the lifting frame includes a first frame and a second frame, wherein the first frame is rotatably mounted on the mounting frame, and the second frame is rotatably mounted on the first frame; The lifting drive mechanism includes a first lifting drive component and a second lifting drive component. The first lifting drive component is mounted on the mounting frame or the first frame and is used to drive the first frame to rotate and lift or lower relative to the mounting frame. The second lifting drive component is mounted on the first frame or the second frame and is used to drive the second frame to rotate and lift or lower relative to the first frame.

[0008] Optionally, the first frame includes a first support frame and at least two sets of first support arms. One end of the first support arm is rotatably mounted on the first support frame, and the other end of the first support arm is rotatably mounted on the mounting frame. Each set of first support arms is spaced apart along the front-rear direction of the mounting frame. The first lifting drive assembly is used to drive at least one set of first support arms to rotate relative to the mounting frame, so that the first support frame is raised or lowered relative to the mounting frame.

[0009] Optionally, the second frame includes a second support frame and at least one set of second support arms, wherein the side of the second support frame away from the backrest frame is rotatably mounted to the first support frame. The second support arm includes a first link and a second link. One end of the first link is rotatably mounted to the second support frame, and the other end of the first link is rotatably mounted to one end of the second link. The other end of the second link is rotatably mounted to the first support frame. The second lifting drive assembly is used to drive the second link to rotate relative to the first support frame, or the second lifting drive assembly is used to drive the first link to rotate relative to the second support frame, so that the second support frame is raised or lowered relative to the first support frame.

[0010] Optionally, one of the first support frame and the second connecting rod is provided with a limiting block, and the other is provided with an arc-shaped guide groove, wherein the limiting block is slidably limited in the arc-shaped guide groove; When the second support frame is raised or lowered relative to the first support frame, the limiting block slides along the arc-shaped guide groove.

[0011] Optionally, both the first lifting drive assembly and the second lifting drive assembly include a rotary drive component, a threaded screw, and a threaded sleeve. The rotary drive component is mounted on the mounting frame or the first frame, and the threaded screw is driven to the output end of the rotary drive component. The threaded sleeve is mounted on the first frame or the second frame, and the threaded screw and the threaded sleeve are threadedly connected. The rotary drive component is used to drive the threaded screw to rotate relative to the threaded sleeve, so that the threaded sleeve drives the first frame or the second frame to rotate.

[0012] Optionally, the first support frame is provided with a mounting base, and the rotary drive components of the first lifting drive assembly and the second lifting drive assembly can be rotatably mounted on the mounting base. The threaded sleeve of the first lifting drive assembly can be rotatably mounted on the first support arm, and the threaded sleeve of the second lifting drive assembly can be rotatably mounted on the second connecting rod.

[0013] Optionally, the car seat further includes a follow-up side wing, which is rotatably mounted on the side of the backrest frame.

[0014] Optionally, the follow-up side wing includes a side wing body and a side wing rotation drive assembly. The side wing body is rotatably mounted on the backrest frame, and the side wing rotation drive assembly is mounted on the side wing body or the backrest frame. The side wing body can rotate with the backrest frame, and the side wing rotation drive assembly can drive the side wing body to rotate relative to the backrest frame to avoid the rear wheel arch.

[0015] Optionally, the car seat further includes a leg support mechanism, which is rotatably mounted on the lifting frame to provide a first leg support state and a second leg support state. When the backrest frame is in the sitting state, the leg support mechanism is in the first leg support state; when the backrest frame is in the bed state, the leg support mechanism is in the second leg support state.

[0016] Optionally, the leg support mechanism includes a leg support body and a leg support rotation drive assembly. The leg support body is rotatably mounted on the lifting frame, and the leg support rotation drive assembly is mounted on the leg support body or the lifting frame to drive the leg support body to rotate relative to the lifting frame.

[0017] Optionally, the leg support body is provided with a clearance portion, which avoids the sub-instrument panel when the leg support rotation drive assembly drives the leg support body to rotate and lift relative to the lifting frame.

[0018] Optionally, the car seat further includes a headrest, which is rotatably mounted on top of the backrest frame to give the headrest a first headrest state and a second headrest state. When the backrest frame is in the sitting state, the headrest is in the first headrest state; when the backrest frame is in the bed state, the headrest is in the second headrest state.

[0019] Optionally, the seat backrest further includes an angle adjustment component, which is mounted on the backrest frame and is used to drive the backrest frame to rotate relative to the mounting frame.

[0020] On the other hand, embodiments of the present invention provide a vehicle, including a body and a car seat as described above, the car seat being mounted on the body.

[0021] The automobile seat and vehicle provided in this invention have at least the following advantages compared with the prior art: This solution, by setting a lifting frame that can move relative to the mounting frame in the seat cushion and configuring a lifting drive mechanism, enables the lifting frame to perform a lifting action relative to the mounting frame when the backrest frame switches from a sitting state to a bed state, and drives it to lower in the sitting state. This effectively eliminates the height difference between the seat back and the seat cushion caused by different structural references after the seat back is folded down, thereby achieving a smooth transition of the seat surface from the sitting mode to the bed mode; thus avoiding the seat surface... This design effectively addresses the common technical bottleneck of insufficient surface flatness in existing technologies when adjusting car seats to a bed-like configuration. Because the seat back and seat cushion are often structurally independent and have inconsistent height references, a significant height difference or step effect can easily form between the backrest and seat cushion when the backrest is fully reclined, preventing the creation of a continuous, smooth lying surface. Therefore, this design improves the uniformity of body support and overall comfort for users resting in the car, ensuring the seat's height consistency and reliability across different usage scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a car seat provided in one embodiment of the present invention; Figure 2 This is a side view of a car seat provided in one embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of a car seat provided in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the lifting frame of a car seat provided in one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the first frame of a car seat provided in one embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second frame of a car seat provided in one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the follow-up side wing of a car seat provided in one embodiment of the present invention; Figure 8 This is a schematic diagram of the leg support mechanism of a car seat provided in one embodiment of the present invention.

[0024] The reference numerals in the accompanying drawings are as follows: 100 - Car seat; 110 - Seat cushion; 111 - Mounting frame; 112 - Lifting frame; 113 - Lifting drive mechanism; 114 - First frame; 115 - Second frame; 116 - First lifting drive assembly; 117 - Second lifting drive assembly; 118 - First support frame; 119 - First support arm; 120 - Second support frame; 121 - Second support arm; 122 - First link; 123 - Second link. 124-Limiting block, 125-Arc-shaped guide groove, 126-Rotary drive component, 127-Threaded screw, 128-Threaded sleeve, 129-Mounting base, 130-Seat backrest, 131-Backrest frame, 132-Angle adjustment component, 140-Follow-up side wing, 141-Side wing body, 142-Side wing rotation drive component, 150-Leg support mechanism, 151-Leg support body, 152-Leg support rotation drive component, 153-Allowing part. Detailed Implementation

[0025] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] like Figures 1 to 2 As shown, one embodiment of the present invention provides an automobile seat 100, which includes a seat cushion 110 and a seat back 130. The seat cushion 110 includes a mounting frame 111, a lifting frame 112, and a lifting drive mechanism 113. The seat back 130 includes a backrest frame 131. The mounting frame 111 is adapted to be mounted on a vehicle body. The lifting frame 112 is mounted on the mounting frame 111 and is movable relative to the mounting frame 111. The lifting drive mechanism 113 is mounted on either the mounting frame 111 or the lifting frame 112 and is used to drive the lifting frame 112 to move relative to the mounting frame 111.

[0029] Specifically, the mounting frame 111, as the basic load-bearing frame of the entire car seat 100, is typically constructed from high-strength metal tubing or stamped steel plates, possessing sufficient rigidity and strength to withstand the weight of the occupants and vehicle impact loads. The mounting frame 111 can be connected to the vehicle body using conventional fixing methods such as bolting, welding, or sliding rail connections; this application does not impose any special limitations on this, as long as the mounting frame 111 remains stable during vehicle operation. The lifting frame 112, as a load-bearing component directly supporting the occupant's buttocks, is movably mounted on the mounting frame 111. To achieve stable movement of the lifting frame 112 relative to the mounting frame 111, a guiding mechanism is typically provided between them, such as a scissor-type lifting mechanism, a four-bar linkage, a sliding rail guide pair, or a rack and pinion transmission mechanism. This relative movement design allows the seat cushion surface height to be dynamically adjusted as needed. The lifting drive mechanism 113 is the power source for height adjustment, and its specific form can be an electric push rod, a hydraulic cylinder, a gas spring, or a rotary motor with a lead screw transmission assembly. When the lifting drive mechanism 113 is installed on the mounting frame 111, its output end directly acts on the lifting frame 112; when it is installed on the lifting frame 112, its reaction force acts on the mounting frame 111, thereby driving the two to undergo relative displacement.

[0030] The seat backrest 130 includes a backrest frame 131, which is rotatably mounted to the mounting frame 111 to allow the backrest frame 131 to have a sitting position and a bed position. The backrest frame 131 constitutes the main support structure of the seat backrest 130, and its material is usually the same as that of the mounting frame 111 to ensure structural strength and durability. The backrest frame 131 and the mounting frame 111 are rotatably connected by a hinge or rotating shaft mechanism, which is usually located at the rear end of the seat cushion 110, allowing the backrest frame 131 to rotate at a large angle relative to the mounting frame 111. The sitting position generally refers to the backrest frame 131 being upright or slightly tilted relative to the mounting frame 111 to support the occupant's back for normal sitting posture; the bed position refers to the backrest frame 131 being rotated backward to a near-horizontal or nearly flush position with the seat cushion, allowing the occupant to lie down and rest. To secure these two positions, a locking mechanism (not shown in the figure) is usually also provided.

[0031] The lifting drive mechanism 113 is used to drive the lifting frame 112 to move downwards or upwards relative to the mounting frame 111. In this embodiment, when the occupant is sitting normally, the lifting drive mechanism 113 drives the lifting frame 112 to move downwards relative to the mounting frame 111, and the lifting frame 112 is in a lower position. This design ensures that the seat cushion 110 is at a moderate height from the ground when seated, allowing the occupant's feet to naturally touch the ground. At this time, the downward position of the lifting frame 112 can be precisely set by mechanical limits or motor control logic. For example, the upper surface of the lifting frame 112 can be substantially flush with the upper edge of the mounting frame 111. The lifting drive mechanism 113 can be driven synchronously with the movement of the backrest frame 131 relative to the mounting frame 111, or it can be driven independently of the movement of the backrest frame 131 relative to the mounting frame 111.

[0032] When the seat needs to be laid flat to form a bed, the backrest frame 131 flips backward to the bed position. The lifting drive mechanism 113 activates, driving the lifting frame 112 to move upward to compensate for the height difference between the top support surface of the backrest frame 131 and the seat cushion support surface after the backrest frame 131 flips. In traditional fixed seat cushion structures, since the backrest hinge axis is usually located above the rear end of the seat cushion, the surface of the backrest is often lower than the surface of the seat cushion after it is laid flat, forming a recessed step. In this embodiment, through the active lifting of the lifting frame 112, the height of the upper surface of the lifting frame 112 can be made consistent with the height of the support surface of the backrest frame 131 in the bed position, thereby forming a flat lying surface.

[0033] Through the aforementioned technical solution, a height-adjustable lifting frame is integrated inside the seat cushion. Therefore, when the backrest frame is folded into a bed-like configuration, the lifting frame can rise to fill the height difference between the seat cushion and the backrest. This design effectively solves the step problem caused by structural interference when existing car seats are unfolded into a bed mode, eliminating the feeling of unsupported lower back or discomfort when lying down, and significantly improving the flatness and comfort of the bed. Simultaneously, the lifting frame lowers when the seat is in use, ensuring a normal seating height and ease of entry and exit, achieving a perfect balance between seating comfort and reclining functionality.

[0034] In an optional embodiment, the lifting drive mechanism 113 drives the lifting frame 112 to move relative to the mounting frame 111, so that the lifting frame 112 has a first cushion state and a second cushion state; when the backrest frame 131 is in the sitting state, the lifting frame 112 is in the first cushion state; when the backrest frame 131 is in the bed state, the lifting frame 112 is in the second cushion state. At this time, the height of the upper surface of the lifting frame 112 can be consistent with the height of the support surface of the backrest frame 131 in the bed state, thereby forming a flat lying plane.

[0035] In this embodiment, the mounting frame 111 has three seats, and the lifting frame 112 has two seats, with the two lifting frames 112 located at the two seats at each end. That is, the first and third seats of the mounting frame 111 are both equipped with lifting frames 112 and lifting drive mechanisms 113. When the backrest frame 131 is in the sitting state, each lifting drive mechanism 113 drives each lifting frame 112 to move and descend relative to the mounting frame 111 to the first seat cushion state; when the backrest frame 131 is in the bed state, each lifting drive mechanism 113 drives each lifting frame 112 to move and rise relative to the mounting frame 111 to the second seat cushion state.

[0036] This embodiment and accompanying drawings are based on... Figure 1 Taking the right-hand seat (corresponding to the third seat) as an example, the lifting frame 112 and lifting drive mechanism 113 shared by the first and second seats on the left side have the same structure as the lifting frame 112 and lifting drive mechanism 113 of the right-hand seat (corresponding to the third seat), and will not be described again here.

[0037] like Figures 1 to 2 As shown, the first frame 114 is rotatably mounted on the mounting frame 111, and the second frame 115 is rotatably mounted on the first frame 114. The first frame 114, as the basic lifting layer, is directly hinged to the mounting frame 111 fixed to the vehicle body, bearing the main load-bearing and primary lifting tasks; the second frame 115, as the secondary fine adjustment layer, is stacked on top of the first frame 114. This hierarchical layout overcomes the contradiction between travel and space occupation in traditional single-frame structures, allowing for a greater total lifting height when the seat needs to be significantly raised in the bed-like state. This is achieved through the coordinated movement of the two frames, resulting in a more compact folding mechanism, while simultaneously ensuring structural stability and flatness after lowering in the seated position.

[0038] The first lifting drive assembly 116 is mounted on the mounting frame 111 or the first frame 114, and is used to drive the first frame 114 to rotate and lift or lower relative to the mounting frame 111. The first lifting drive assembly 116 acts as a primary power source, specifically responsible for controlling the pitch angle of the first frame 114 relative to the mounting frame 111. Depending on the actual space layout requirements, the first lifting drive assembly 116 can be fixed to the mounting frame 111 to push and pull the first frame 114 upwards, or it can be inverted and mounted on the first frame 114 to push and pull the mounting frame 111 downwards.

[0039] The second lifting drive assembly 117 is installed on either the first frame 114 or the second frame 115, and is used to drive the second frame 115 to rotate and lift or lower relative to the first frame 114. The second lifting drive assembly 117 drives the second frame 115 relative to the first frame 114. Similar to the first lifting drive assembly 116, its installation position can also be flexibly selected according to the spatial gap between the first frame 114 and the second frame 115. Specifically, during the process of switching the seat from a sitting state to a bed state, the first lifting drive assembly 116 can first act to lift the first frame 114 to a predetermined height, and then the second lifting drive assembly 117 can act to further lift the second frame 115, or the two can act in coordination according to a preset timing sequence. This multi-stage drive strategy not only effectively disperses the load stress of a single drive source and improves the load-bearing capacity and service life of the mechanism, but also greatly improves the adjustment resolution of the lifting stroke, so that the seat cushion can accurately match the height of the seat back 130 in the bed state, eliminating the height difference, thereby significantly improving the user's comfort and support experience when lying down to rest.

[0040] In an alternative embodiment, such as Figures 3 to 5 As shown, the first frame 114 includes a first support frame 118 and at least two sets of first support arms 119. One end of each first support arm 119 is rotatably mounted to the first support frame 118, and the other end is rotatably mounted to the mounting frame 111. The sets of first support arms 119 are spaced apart along the front-rear direction of the mounting frame 111. A first lifting drive assembly 116 drives at least one set of first support arms 119 to rotate relative to the mounting frame 111, thereby raising or lowering the first support frame 118 relative to the mounting frame 111.

[0041] The first support frame 118, as the core load-bearing component, is mainly used to provide a support surface for passengers when seated. The first support arm 119, as a transmission link connecting the first support frame 118 and the mounting frame 111, has its two ends connected to the first support frame 118 and the mounting frame 111 respectively through hinge shafts, bearing seats, or hinges, thus forming a stable support structure. By setting at least two sets of spaced first support arms 119, this application constructs a multi-link parallel support architecture. This spaced arrangement significantly enhances the torsional stiffness and lateral stability of the first support frame 118 during lifting, effectively avoiding frame tilting or jamming caused by uneven passenger load. It should be understood that the specific number of first support arms 119 can be flexibly set according to the seat width and load requirements, for example, two, three, or more sets; this application does not specifically limit this. Each set of first support arms 119 has two first support arms 119, which are symmetrically installed on opposite sides of the first support frame 118 in the left-right direction.

[0042] During operation, the first lifting drive assembly 116 serves as a power source. It can be directly mounted on the driven first support arm 119, or mounted on the mounting frame 111 or other locations on the first support frame 118. Power is transmitted to the first support arm 119 via transmission mechanisms such as gears, connecting rods, or cables. When the first lifting drive assembly 116 operates, its output torque drives the first support arm 119 to rotate around its hinge point on the mounting frame 111. Since the other end of the first support arm 119 is hinged to the first support frame 118, and there are motion constraints between multiple sets of first support arms 119, the first support frame 118 is forced to displace in the vertical direction.

[0043] In an alternative embodiment, such as Figures 4 to 6 As shown, the second frame 115 includes a second support frame 120 and at least one set of second support arms 121. The side of the second support frame 120 away from the backrest frame 131 is rotatably mounted to the first support frame 118. The second support frame 120, as the main load-bearing component of the second-stage lifting mechanism, directly supports the foam or upholstery of the seat cushion. Its material can be selected from aluminum alloy, high-strength steel, or engineering plastics depending on strength and lightweight requirements. This rotatable connection point is typically located on the side of the second support frame 120 away from the backrest frame 131 (i.e., near the front of the seat) to create a reasonable lever ratio during lifting and achieve efficient force transmission. Each set of second support arms 121 has two arms, which are symmetrically mounted on opposite sides of the second support arm 121 in the left-right direction.

[0044] The second support arm 121 includes a first link 122 and a second link 123. One end of the first link 122 is rotatably mounted to the second support frame 120, and the other end of the first link 122 is rotatably mounted to one end of the second link 123. The other end of the second link 123 is rotatably mounted to the first support frame 118. The first link 122 and the second link 123 serve as core transmission components, dynamically connecting the second support frame 120 and the first support frame 118 through their respective revolute joints. This multi-link layout allows for precise planning of the spatial posture curve of the second support frame 120 during the lifting process based on the geometric design of the link lengths and hinge point positions. This enables a greater lifting stroke within the limited interior space of the seat and effectively avoids mechanical interference with surrounding components.

[0045] The second lifting drive assembly 117 is used to drive the second link 123 to rotate relative to the first support frame 118, or the second lifting drive assembly 117 is used to drive the first link 122 to rotate relative to the second support frame 120, so that the second support frame 120 is raised or lowered relative to the first support frame 118. The second lifting drive assembly 117 can be installed in other parts of the first support frame 118 or the second frame 115, and its output end can be directly hinged to the second link 123 to push it to rotate, or drive the first link 122 to rotate relative to the second support frame 120 through a transmission mechanism.

[0046] When the second lifting drive assembly 117 pushes the second link 123 to rotate, the motion is transmitted to the first link 122 through the intermediate hinge point, and then converted into a pushing or pulling force on the second support frame 120, forcing the second support frame 120 to rotate around its hinge point with the first support frame 118, thereby achieving lifting or lowering.

[0047] In an alternative embodiment, such as Figures 4 to 6 As shown, the first support frame 118 and the second connecting rod 123 are provided with a limiting block 124 and an arc-shaped guide groove 125. The limiting block 124 slides and is limited in the arc-shaped guide groove 125. When the second support frame 120 is raised or lowered relative to the first support frame 118, the limiting block 124 slides along the arc-shaped guide groove 125.

[0048] Specifically, the limiting block 124 can be a protrusion or pin fixedly connected to the second connecting rod 123, and the arc-shaped guide groove 125 can be a waist-shaped hole or through groove opened on the first support frame 118; alternatively, the limiting block 124 can also be a protrusion provided on the first support frame 118, and the arc-shaped guide groove 125 can be opened on the second connecting rod 123. This application embodiment does not make any special limitations on this. The cooperation between the limiting block 124 and the arc-shaped guide groove 125 constitutes a geometric constraint on the movement trajectory of the second connecting rod 123. The two are usually fitted with a clearance to ensure smooth sliding, while the lateral constraint of the contact surface restricts unnecessary degrees of freedom.

[0049] The curvature center and radius of the arc-shaped guide groove 125 are pre-calibrated based on the ideal motion trajectory of the second support frame 120 during lifting or lowering, and its shape precisely corresponds to the theoretical relative motion curve of the second link 123 relative to the first support frame 118. When the second lifting drive assembly 117 drives the second link 123 to rotate, the limiting block 124 is forcibly constrained to roll or slide within the arc-shaped guide groove 125, thereby correcting the actual motion path of the second link 123 and making it strictly follow the preset arc trajectory. When the raised frame 112 is in the first seat position, the limiting block 124 moves to one end of the arc-shaped guide groove 125 to limit the movement of the limiting block 124 within the arc-shaped guide groove 125, thereby improving the stability of the second support frame 120; when the raised frame 112 is in the second seat position, the limiting block 124 moves to the other end of the arc-shaped guide groove 125 to limit the movement of the limiting block 124 within the arc-shaped guide groove 125, thereby improving the stability of the second support frame 120. In an optional embodiment, such as Figures 5 to 6 As shown, both the first lifting drive assembly 116 and the second lifting drive assembly 117 include a rotary drive component 126, a threaded screw 127, and a threaded sleeve 128. The rotary drive component 126 is mounted on the mounting frame 111 or the first frame 114. The threaded screw 127 is driven to the output end of the rotary drive component 126. The threaded sleeve 128 is mounted on the first frame 114 or the second frame 115, and the threaded screw 127 and the threaded sleeve 128 are threadedly connected. The rotary drive component 126 is used to drive the threaded screw 127 to rotate relative to the threaded sleeve 128, so that the threaded sleeve 128 drives the first frame 114 or the second frame 115 to rotate.

[0050] During operation, the rotary drive 126 outputs torque to drive the threaded screw 127 to rotate. Since the threaded sleeve 128 is constrained by the first frame 114 or the second frame 115 and cannot rotate accordingly, the threaded sleeve 128 will perform linear extension and retraction along the axis of the threaded screw 127 under the action of the threaded pair. This linear motion is converted into a thrust or pull force on the first frame 114 or the second frame 115 through the hinge point, driving the frame to rise or fall around its rotation axis. Furthermore, the screw drive mechanism has excellent self-locking performance. When the rotary drive 126 stops working and the axial force does not exceed the critical self-locking force, the friction between the threaded screw 127 and the threaded sleeve 128 can prevent the mechanism from reversing, thereby ensuring that the seat remains stable after being raised or lowered, guaranteeing safe use without the need for an additional braking device.

[0051] In an alternative embodiment, such as Figures 1 to 2As shown, the first support frame 118 is provided with a mounting base 129. The rotation drive components 126 of the first lifting drive assembly 116 and the second lifting drive assembly 117 can both be rotatably mounted on the mounting base 129. The threaded sleeve 128 of the first lifting drive assembly 116 is rotatably mounted on the first support arm 119, and the threaded sleeve 128 of the second lifting drive assembly 117 is rotatably mounted on the second connecting rod 123. In this embodiment, reference... Figure 4 There are two sets of first support arms 119. One set of first support arms 119 (the side closer to the seat backrest 130) includes a crossbeam and two vertical support arms, which are connected to both ends of the crossbeam. The threaded sleeve 128 of the first lifting drive assembly 116 is rotatably mounted on the crossbeam. The other set of first support arms 119 (the side away from the seat backrest 130) includes only two vertical support arms. The first support frame 118 is provided with a support crossbar, which is arranged along the left and right direction of the first support frame 118. The mounting seat 129 is mounted on the support crossbar. Of course, it is understood that the mounting seat 129 can also be mounted on the first support frame 118 in other ways.

[0052] In an alternative embodiment, such as Figures 1 to 2 As shown, the follower wing 140 is rotatably mounted on the side of the backrest frame 131.

[0053] The follow-up side wing 140 is used to rotate relative to the backrest frame 131 to adjust the position or posture of the seat when it is in different states (e.g., sitting or bed-like). Specifically, when the backrest frame 131 switches between the sitting and bed-like states, the follow-up side wing 140 can rotate accordingly to provide lateral support in the sitting state, or to avoid obstacles in the vehicle (such as rear wheel arches) or provide better reclining support in the bed-like state.

[0054] The rotatable connection between the follower side wing 140 and the backrest frame 131 can be a hinge, a shaft-hole fit, or other conventional rotatable connection structures; this application embodiment does not impose any special limitations on this. Through the above technical solution, this application achieves the goal of dynamically adjusting the posture of the side wing according to different usage scenarios by adding a rotatable follower side wing to the side of the backrest frame, thereby improving the spatial compatibility and ergonomic adaptability in bed mode while ensuring seating comfort.

[0055] In an alternative embodiment, such as Figure 7 As shown, the follower side wing 140 includes a side wing body 141 and a side wing rotation drive assembly 142. The follower side wing 140 includes a side wing body 141 and a side wing rotation drive assembly 142, and the side wing body 141 is rotatably mounted on the backrest frame 131.

[0056] The side wing body 141, as the main supporting component of the follow-up side wing 140, provides support for the occupant's waist and sides. The side wing body 141 can be mounted to the side of the backrest frame 131 via hinges, pivots, or other connection methods, allowing the side wing body 141 to rotate relative to the backrest frame 131. The shape of the side wing body 141 can be designed according to ergonomic requirements, such as an arc-shaped structure conforming to the occupant's waist. Its material can be high-strength plastic, a metal frame wrapped with foam, or carbon fiber composite materials, etc., and this application embodiment does not impose any special limitations on this. The side wing rotation drive assembly 142 is mounted on the side wing body 141 or the backrest frame 131. The side wing body 141 can rotate with the backrest frame 131, and the side wing rotation drive assembly 142 can drive the side wing body 141 to rotate relative to the backrest frame 131 to avoid collision with the rear wheel arches.

[0057] The wing rotation drive assembly 142 is the power core for controlling the attitude of the wing body 141. Its installation position is flexible; it can be integrated into the wing body 141 or fixed to the backrest frame 131. Exemplarily, the wing rotation drive assembly 142 may include a motor (e.g., a DC servo motor, a stepper motor) and a matching transmission mechanism (e.g., a reduction gear set, a worm gear mechanism). When the wing rotation drive assembly 142 receives a control signal, its output terminal outputs a rotational torque, which is transmitted to the wing body 141 through the transmission mechanism, driving the wing body 141 to rotate relative to the backrest frame 131 around its rotation axis.

[0058] In an alternative embodiment, such as Figures 1 to 2 As shown, the car seat 100 also includes a leg support mechanism 150, which is rotatably mounted on the lifting frame 112 to provide a first leg support state and a second leg support state. When the backrest frame 131 is in the sitting position, the leg support mechanism 150 is in the first leg support state; when the backrest frame 131 is in the bed position, the leg support mechanism 150 is in the second leg support state. The leg support mechanism 150 supports the user's legs in the bed position, improving seating comfort. The leg support mechanism 150 can be mounted to the front or side of the lifting frame 112 via hinges, pivots, or other rotatable connections, allowing it to rotate relative to the lifting frame 112. The rotation angle of the leg support mechanism 150 can be set according to actual needs, for example, it can rotate between a folded state and an unfolded state. In the retracted state, the leg support mechanism 150 can be folded or stowed under or to the side of the lifting frame 112 to save space; in the extended state, the leg support mechanism 150 can extend forward and lift to support the user's legs. The rotation of the leg support mechanism 150 can be driven manually or automatically by a drive mechanism such as a motor or cylinder.

[0059] Through the above technical solution, this application achieves effective leg support for the user in the bed-like state of the car seat 100. Since the leg support mechanism 150 is rotatably mounted on the lifting frame 112, when the seat back 130 rotates to the bed-like state, the lifting frame 112 is lifted under the drive of the lifting drive mechanism 113. At this time, the leg support mechanism 150 can unfold synchronously with the lifting frame 112 as it rises to the second leg support state, or it can unfold independently as needed, thus forming a flat or nearly flat support plane together with the raised seat cushion 110 and the reclined seat back 130. This design not only improves the integrity of human body support in the bed-like state and avoids the discomfort caused by dangling legs, but also allows for flexible switching of the leg support mechanism 150 in different usage states through a rotatable connection, balancing riding comfort and space utilization.

[0060] In an alternative embodiment, such as Figures 1 to 2 As shown, the leg support mechanism 150 includes a leg support body 151 and a leg support rotation drive assembly 152. The leg support body 151 is rotatably mounted on the lifting frame 112, supporting the occupant's lower legs in the seated position and forming a flat bed support structure with the seat cushion 110 and seat back 130 in the bed-like position. The leg support body 151 is typically made of a metal frame combined with foam filling and leather upholstery, and its shape conforms to ergonomic curves to provide good leg support comfort. The leg support body 151 is connected to the lifting frame 112 via a pivot or hinge structure. The axis of this pivot is perpendicular to the left-right direction of the car seat, allowing the leg support body 151 to rotate relative to the lifting frame 112 in a vertical plane.

[0061] The leg rest rotation drive assembly 152 is mounted on the leg rest body 151 or the lifting frame 112, and is used to drive the leg rest body 151 to rotate relative to the lifting frame 112. The installation position of the leg rest rotation drive assembly 152 can be flexibly selected according to the interior space layout requirements. In one embodiment, when the leg rest rotation drive assembly 152 is mounted on the lifting frame 112, its output end is connected to the rotating shaft of the leg rest body 151, and drives the rotating shaft to rotate to drive the leg rest body 151 to flip. In another embodiment, when the leg rest rotation drive assembly 152 is directly mounted on the leg rest body 151, its housing is fixed to the leg rest body 151, and its output end interacts with the connecting part on the lifting frame 112, which can also achieve the driving effect of relative rotation. The leg support rotation drive assembly 152 may include a motor, a reducer, and a control circuit, which can precisely control the rotation angle and speed of the leg support body 151, and realize multi-level angle adjustment to meet the personalized needs of passengers of different heights for leg support angle. At the same time, it locks the leg support body 151 at a predetermined angle in the bed state to ensure the stability of the bed surface.

[0062] Through the above technical solution, this application realizes the active angle adjustment and positioning of the leg support body 151 by the leg support rotation drive component 152, so that the car seat can flexibly switch between sitting and bed-like states, effectively improving the functionality of the seat and the riding comfort of the occupants.

[0063] In an alternative embodiment, such as Figure 1 As shown, the leg rest body 151 has a clearance portion 153. When the leg rest rotation drive assembly 152 drives the leg rest body 151 to rotate and rise relative to the lifting frame 112, the clearance portion 153 avoids the sub-instrument panel. Since the vehicle has a sub-instrument panel in the front row, when the leg rest rotation drive assembly 152 drives the leg rest body 151 to rotate and rise relative to the lifting frame 112, the leg rest body 151 will physically interfere with the sub-instrument panel. Therefore, by providing the clearance portion 153 in the leg rest body 151, the sub-instrument panel can be avoided, thereby allowing the leg rest body 151 to rotate and rise relative to the lifting frame 112.

[0064] In another optional embodiment, the car seat 100 also includes a headrest rotatably mounted on top of the backrest frame 131, allowing the headrest to have a first headrest state and a second headrest state. When the backrest frame 131 is in a sitting position, the headrest is in the first headrest state; when the backrest frame 131 is in a bed position, the headrest is in the second headrest state. As an important safety and comfort component of the car seat 100, the headrest primarily limits excessive head extension relative to the torso during a rear-end collision, thereby reducing whiplash injuries to the neck. Simultaneously, it provides close support for the occupant's head and neck during normal sitting or bed-like resting states.

[0065] The headrest is rotatably mounted on top of the backrest frame 131, allowing the headrest to be angled relative to the backrest frame 131. For example, this rotatable connection structure can be implemented using conventional mechanical connection methods such as hinges, pivots, or ball joints. Its rotation axis can extend horizontally or be configured for multi-axial rotation as needed to accommodate the personalized headrest angle requirements of occupants of different heights and body types.

[0066] By making the headrest rotatable, the headrest can adjust its posture when the backrest frame 131 switches between a sitting position and a bed position. For example, in the bed position, the headrest rotates forward or downward to prevent it from protruding from the bed surface and affecting the flatness of the reclining position; or in the sitting position, the headrest adjusts backward to provide a better neck support angle. This design not only improves the comfort of the car seat 100 in a single sitting mode, but also makes it compatible with the special support needs of the bed position, enhancing the adaptability and ergonomics of the seat in different usage scenarios.

[0067] In an alternative embodiment, such as Figures 1 to 2 As shown, the seat backrest 130 also includes an angle adjustment component 132, which is mounted on the backrest frame 131 and is used to drive the backrest frame 131 to rotate relative to the mounting frame 111.

[0068] The angle adjustment component 132, as the core functional component for adjusting the angle of the seat back 130, directly outputs a driving torque to rotate the backrest frame 131 relative to the mounting frame 111. This allows the user to flexibly adjust the tilt angle of the backrest frame 131, switching between a sitting position and a bed-like position, or hovering at any angle, thus meeting comfort needs in different seating scenarios. The specific implementation of the angle adjustment component 132 may include, but is not limited to, an electric push rod mechanism, a hydraulic cylinder drive mechanism, a gear and rack transmission mechanism, or a worm gear transmission mechanism; this application embodiment does not impose any special limitations on this.

[0069] During operation, the angle adjustment component 132 receives a control signal and outputs a corresponding rotational or linear driving force. This driving force acts on the backrest frame 131, causing it to rotate relative to the mounting frame 111, overcoming rotational friction resistance and load torque. During adjustment, the angle adjustment component 132 can precisely control the angular displacement of the backrest frame 131, achieving stepless angle adjustment.

[0070] like Figures 1 to 8 As shown, another embodiment of the present invention provides a vehicle, which includes a body and a car seat 100 as provided in any of the above embodiments, the car seat 100 being mounted on the body. The specific structure of the car seat 100 is the same as described in the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0071] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A car seat, characterized in that, include: A seat cushion includes a mounting frame, a lifting frame, and a lifting drive mechanism. The mounting frame is adapted to be mounted on a vehicle body. The lifting frame is mounted on the mounting frame and is movable relative to the mounting frame. The lifting drive mechanism is mounted on the mounting frame or the lifting frame and is used to drive the lifting frame to move relative to the mounting frame. A seat backrest, including a backrest frame, the backrest frame being rotatably mounted to the mounting frame so that the backrest frame has a sitting position and a bed position; The lifting drive mechanism is used to drive the lifting frame to move down or up relative to the mounting frame.

2. The car seat according to claim 1, characterized in that, The lifting drive mechanism drives the lifting frame to move relative to the mounting frame, so that the lifting frame has a first cushion state and a second cushion state. When the backrest frame is in the sitting state, the lifting frame is in the first seat cushion state; when the backrest frame is in the bed state, the lifting frame is in the second seat cushion state.

3. The car seat according to claim 1, characterized in that, The lifting frame includes a first frame and a second frame, wherein the first frame is rotatably mounted on the mounting frame, and the second frame is rotatably mounted on the first frame; The lifting drive mechanism includes a first lifting drive component and a second lifting drive component. The first lifting drive component is mounted on the mounting frame or the first frame and is used to drive the first frame to rotate and lift or lower relative to the mounting frame. The second lifting drive component is mounted on the first frame or the second frame and is used to drive the second frame to rotate and lift or lower relative to the first frame.

4. The car seat according to claim 3, characterized in that, The first frame includes a first support frame and at least two sets of first support arms. One end of the first support arm is rotatably mounted on the first support frame, and the other end of the first support arm is rotatably mounted on the mounting frame. Each set of first support arms is spaced apart along the front-rear direction of the mounting frame. The first lifting drive assembly is used to drive at least one set of first support arms to rotate relative to the mounting frame, so that the first support frame is raised or lowered relative to the mounting frame.

5. The car seat according to claim 4, characterized in that, The second frame includes a second support frame and at least one set of second support arms, wherein the side of the second support frame away from the backrest frame is rotatably mounted to the first support frame. The second support arm includes a first link and a second link. One end of the first link is rotatably mounted to the second support frame, and the other end of the first link is rotatably mounted to one end of the second link. The other end of the second link is rotatably mounted to the first support frame. The second lifting drive assembly is used to drive the second link to rotate relative to the first support frame, or the second lifting drive assembly is used to drive the first link to rotate relative to the second support frame, so that the second support frame is raised or lowered relative to the first support frame.

6. The car seat according to claim 5, characterized in that, The first support frame and the second connecting rod, one of which is provided with a limiting block, and the other is provided with an arc-shaped guide groove, wherein the limiting block is slidably limited in the arc-shaped guide groove; When the second support frame is raised or lowered relative to the first support frame, the limiting block slides along the arc-shaped guide groove.

7. The car seat according to claim 5, characterized in that, Both the first lifting drive assembly and the second lifting drive assembly include a rotary drive component, a threaded screw, and a threaded sleeve. The rotary drive component is mounted on the mounting frame or the first frame. The threaded screw is driven to the output end of the rotary drive component. The threaded sleeve is mounted on the first frame or the second frame, and the threaded screw and the threaded sleeve are threadedly connected. The rotary drive component is used to drive the threaded screw to rotate relative to the threaded sleeve, so that the threaded sleeve drives the first frame or the second frame to rotate.

8. The automobile seat according to claim 7, characterized in that, The first support frame is provided with a mounting base. The rotary drive components of the first lifting drive assembly and the second lifting drive assembly can be rotatably mounted on the mounting base. The threaded sleeve of the first lifting drive assembly can be rotatably mounted on the first support arm, and the threaded sleeve of the second lifting drive assembly can be rotatably mounted on the second connecting rod.

9. The car seat according to claim 1, characterized in that, The car seat also includes a follow-up side wing, which is rotatably mounted on the side of the backrest frame.

10. The automobile seat according to claim 9, characterized in that, The follow-up side wing includes a side wing body and a side wing rotation drive assembly. The side wing body is rotatably mounted on the backrest frame, and the side wing rotation drive assembly is mounted on the side wing body or the backrest frame. The side wing body can rotate with the backrest frame, and the side wing rotation drive assembly can drive the side wing body to rotate relative to the backrest frame to avoid the rear wheel arch.

11. The car seat according to claim 1, characterized in that, The car seat also includes a leg support mechanism, which is rotatably mounted on the lifting frame to give the leg support mechanism a first leg support state and a second leg support state. When the backrest frame is in the sitting state, the leg support mechanism is in the first leg support state; when the backrest frame is in the bed state, the leg support mechanism is in the second leg support state.

12. The automobile seat according to claim 11, characterized in that, The leg support mechanism includes a leg support body and a leg support rotation drive assembly. The leg support body is rotatably mounted on the lifting frame, and the leg support rotation drive assembly is mounted on the leg support body or the lifting frame to drive the leg support body to rotate relative to the lifting frame.

13. The automobile seat according to claim 12, characterized in that, The leg support body is provided with a clearance portion, which avoids the sub-instrument panel when the leg support rotation drive assembly drives the leg support body to rotate and lift relative to the lifting frame.

14. The car seat according to claim 1, characterized in that, The car seat also includes a headrest, which is rotatably mounted on top of the backrest frame to give the headrest a first headrest state and a second headrest state. When the backrest frame is in the sitting position, the headrest is in the first headrest position. When the backrest frame is in the bed-like state, the headrest is in the second headrest state.

15. The automobile seat according to claim 1, characterized in that, The seat backrest also includes an angle adjustment component, which is mounted on the backrest frame and is used to drive the backrest frame to rotate relative to the mounting frame.

16. A vehicle, characterized in that, It includes a vehicle body and a vehicle seat as claimed in any one of claims 1 to 15, the vehicle seat being mounted on the vehicle body.

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