A seat

Abstract

This utility model relates to the field of furniture technology and discloses a seating arrangement, comprising: a base; a movable seat slidably connected to the base; a first linkage mechanism connected between the base and the movable seat, the first linkage mechanism having an unfolded or folded state; and a second linkage mechanism connected between the first linkage mechanism and the base, the second linkage mechanism also having an unfolded or folded state. The first linkage mechanism and the second linkage mechanism are drively connected, wherein when the movable seat slides on the base, one of the first linkage mechanism and the second linkage mechanism tends to be in an unfolded state, and the other tends to be in a folded state. This utility model can adjust the position of the movable seat at a uniform speed, improving the convenience and stability of adjusting and positioning the movable seat, thereby improving the user experience of the seating arrangement.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a seating furniture. Background Technology

[0002] As seating functions become increasingly sophisticated, some chairs now allow for adjustable postures, such as switching between sitting and reclining positions. Currently, power to move the chair seat is typically transmitted via a linkage mechanism. However, this linkage mechanism exhibits inconsistent speeds during power transmission; a larger transmission angle results in faster seat movement, while a smaller angle leads to slower movement. This significant variation in seat speed degrades the user experience. Therefore, there is a pressing need for a chair seat that can adjust its position at a uniform speed. Utility Model Content

[0003] The purpose of this utility model is to provide a seating device to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is:

[0005] A seating arrangement includes: a base; a movable seat slidably connected to the base; a first linkage mechanism connected between the base and the movable seat, the first linkage mechanism having an unfolded or folded state; and a second linkage mechanism connected between the first linkage mechanism and the base, the second linkage mechanism also having an unfolded or folded state. The first linkage mechanism and the second linkage mechanism are drively connected, wherein when the movable seat slides on the base, one of the first linkage mechanism and the second linkage mechanism tends to be in an unfolded state, and the other tends to be in a folded state.

[0006] This technical solution has at least the following beneficial effects: a seat cushion can be installed on the movable seat, allowing the user to sit or lie down. The movable seat can slide on the base, enabling switching between sitting and lying positions. Specifically, when the first linkage mechanism is in the unfolded state, the angle between two adjacent links within the first linkage mechanism is relatively large, while the second linkage mechanism is in the folded state, and the angle between two adjacent links within the second linkage mechanism is relatively small. When the first or second linkage mechanism is moved by an external force, the first linkage mechanism switches to the folded state, and the second linkage mechanism switches to the unfolded state. During this process, the angle between two adjacent links within the first linkage mechanism... The angle between the first and second linkages gradually decreases, and the speed of power transmission outwards decreases. Conversely, the angle between adjacent linkages in the second linkage gradually increases, and the speed of power transmission outwards increases. By balancing the changes in the speed of power transmission between the two linkages, the movable seat can be moved at a constant speed. Conversely, when the first linkage moves from the folded state to the unfolded state, and the second linkage moves from the unfolded state to the folded state, the movable seat can also move at a constant speed on the base. This allows for uniform adjustment of the movable seat's position, improving the convenience and stability of position adjustment and thus enhancing the user experience of the seating.

[0007] As a further improvement to the above technical solution, the present invention also includes a linear drive component, which has a first end and a second end that can move closer to or further away from each other. The first end of the linear drive component is throttle-connected to the second linkage mechanism, and the second end of the linear drive component is rotatably connected to the movable seat.

[0008] As a further improvement to the above technical solution, the first linkage mechanism includes a first transmission rod and a second transmission rod that are rotatably connected to each other. The first transmission rod is rotatably connected to the base, and the second transmission rod is rotatably connected to the movable seat. The second linkage mechanism is driven by the second transmission rod. When the first transmission rod and the second transmission rod rotate to move away from each other, the first linkage mechanism is in an unfolded state; when the first transmission rod and the second transmission rod rotate to move closer to each other, the first linkage mechanism is in a folded state.

[0009] As a further improvement to the above technical solution, the second linkage mechanism includes a third transmission rod and a fourth transmission rod that are rotatably connected to each other. The second transmission rod and the first end of the linear drive member are respectively rotatably connected to the third transmission rod. The fourth transmission rod is rotatably connected to the base. When the third transmission rod and the fourth transmission rod rotate to move away from each other, the second linkage mechanism is in an unfolded state. When the third transmission rod and the fourth transmission rod rotate to move closer to each other, the second linkage mechanism is in a folded state.

[0010] As a further improvement to the above technical solution, the first end of the linear drive member is rotatably connected to the end of the third transmission rod away from the fourth transmission rod, and the rotatable connection between the third transmission rod and the second transmission rod is located at the end of the third transmission rod away from the fourth transmission rod.

[0011] As a further improvement to the above technical solution, a transmission component is provided between the first end of the linear drive component and the third transmission rod, and the two sides of the transmission component are respectively rotatably connected to the third transmission rod and the first end of the linear drive component.

[0012] As a further improvement to the above technical solution, a transmission pipe is connected to one side of the transmission component, and the transmission pipe is rotatably connected to the third transmission rod.

[0013] As a further improvement to the above technical solution, a first recess is provided on the top side of the first transmission rod, which is used to avoid the transmission tube when it approaches.

[0014] As a further improvement to the above technical solution, when the first linkage mechanism is in a folded state, the transmission tube abuts against the first recess.

[0015] As a further improvement to the above technical solution, a second recess is provided on the top side of the transmission component, which is used to avoid the linear drive component when relatively close to it.

[0016] As a further improvement to the above technical solution, when the second linkage mechanism is in a folded state, the first end of the linear drive member abuts against the second recess.

[0017] As a further improvement to the above technical solution, an elastic component is connected between the first transmission rod and the base. When the first linkage mechanism moves from a folded state to an unfolded state or from an unfolded state to a folded state, the elastic component first deforms elastically and then elastically recovers.

[0018] As a further improvement to the above technical solution, the maximum elastic force of the elastic component is less than 500 Newtons; when the first linkage mechanism is in the folded state, the elastic component is vertically arranged, and the first transmission rod is located below the elastic component.

[0019] As a further improvement to the above technical solution, the present invention also includes a back support, which is rotatably connected to the movable seat. The back support can rotate downward away from the movable seat or rotate upward towards the movable seat.

[0020] As a further improvement to the above technical solution, the present invention also includes a leg support, which is disposed on the movable seat and can extend away from the movable seat or retract towards the movable seat.

[0021] As a further improvement to the above technical solution, the present invention also includes a foot support, which is disposed on the leg support and can extend away from the leg support or retract towards the leg support.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0024] Figure 1 This is a first schematic diagram of the internal structure of this utility model, in which the movable seat is in a sitting position.

[0025] Figure 2 This is a second schematic diagram of the internal structure of this utility model, in which the movable seat switches between a sitting position and a lying position.

[0026] Figure 3 This is a third schematic diagram of the internal structure of this utility model, in which the movable seat is in a reclining position.

[0027] Figure 4 This is the first perspective view of the present invention, in which the movable seat is in a seated position.

[0028] Figure 5 This is the second perspective view of the present invention, in which the movable seat switches between a sitting position and a lying position.

[0029] Figure 6 This is the third perspective view of the present invention, in which the movable seat is in a reclining position.

[0030] In the attached diagram: 100-base, 200-movable seat, 210-first linkage mechanism, 211-first transmission rod, 212-second transmission rod, 213-first recess, 300-linear drive component, 310-second linkage mechanism, 311-third transmission rod, 312-fourth transmission rod, 320-transmission component, 321-second recess, 330-transmission tube, 350-elastic component, 400-back support, 500-leg bracket, 600-foot bracket. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances.

[0035] In the description of this application, the use of terms such as "one embodiment," "some embodiments," "an example," "some instances," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Reference Figures 1 to 6 A seating arrangement includes a base 100, a movable seat 200, a first linkage mechanism 210, and a second linkage mechanism 310. The movable seat 200 is slidably connected to the base 100. The first linkage mechanism 210 is connected between the base 100 and the movable seat 200 and has an unfolded or folded state. The second linkage mechanism 310 is connected between the first linkage mechanism 210 and the base 100 and has an unfolded or folded state. The first linkage mechanism 210 and the second linkage mechanism 310 are drively connected. When the movable seat 200 slides on the base 100, one of the first linkage mechanism 210 and the second linkage mechanism 310 tends to be in an unfolded state, and the other tends to be in a folded state.

[0037] As described above, a seat cushion can be installed on the movable seat 200, allowing the user to sit or lie down. The movable seat 200 can slide on the base 100, enabling switching between sitting and lying positions. Specifically, when the first linkage mechanism 210 is in the unfolded state, the angle between two adjacent rods within the first linkage mechanism 210 is relatively large, while the second linkage mechanism 310 is in the folded state, and the angle between two adjacent rods within the second linkage mechanism 310 is relatively small. When the first linkage mechanism 210 or the second linkage mechanism 310 is moved by an external force, the first linkage mechanism 210 switches to the folded state, and the second linkage mechanism 310 switches to the unfolded state. During this process, the angle between two adjacent rods within the first linkage mechanism 210... As the angle between the two links gradually decreases, the speed of power transmission outward decreases. Conversely, as the angle between adjacent links in the second linkage 310 gradually increases, the speed of power transmission outward increases. By balancing the speed changes of power transmission in the two linkages, the movable seat 200 can be moved, allowing it to maintain a constant speed. Conversely, when the first linkage 210 moves from the folded state to the unfolded state, and the second linkage 310 moves from the unfolded state to the folded state, the movable seat 200 can also move at a constant speed on the base 100. This allows for uniform adjustment of the position of the movable seat 200, improving the convenience and stability of position adjustment and positioning, thereby enhancing the user experience of the seating.

[0038] External power can be transmitted to the first linkage mechanism 210 or the second linkage mechanism 310. For example, a motor or rotary cylinder or other rotary drive source can be installed at the position corresponding to the first linkage mechanism 210 or the second linkage mechanism 310 to provide driving force to the first linkage mechanism 210 or the second linkage mechanism 310. The present invention also includes a linear drive member 300, which has a first end and a second end that can be brought closer to or moved away from each other. The first end of the linear drive member 300 is throttle-connected to the second linkage mechanism 310, and the second end of the linear drive member 300 is rotatably connected to the movable seat 200.

[0039] In the embodiment where power is provided by the linear drive 300, since the second end of the linear drive 300 can move closer to or further away from the first end in a straight line, when the second end of the linear drive 300 is closer to the first end, the included angle formed between two adjacent rods in the first linkage 210 is smaller, while the included angle formed between two adjacent rods in the second linkage 310 is larger. When the second end of the linear drive 300 moves away from the first end, the second linkage 310 drives the first linkage 210 to move, and transmits power to the movable seat 200, causing the movable seat 200 to switch from a sitting position to a lying position. During this process, since the second end of the linear drive 300 moves away from the first end, the included angle formed between two adjacent rods in the first linkage 210 is larger. When the angle between the two links is small, the transmission speed is slow. However, when the angle between two adjacent links in the second linkage 310 is large, the transmission speed is fast. The power of the two linkages is balanced and drives the movable seat 200 to move. As the movable seat 200 moves, the angle between two adjacent links in the first linkage 210 gradually increases and the transmission speed increases. Meanwhile, the angle between two adjacent links in the second linkage 310 gradually decreases and the transmission speed decreases. The power of the two linkages is always balanced before driving the movable seat 200 to move, so that the movable seat 200 maintains a constant speed. The same applies when the movable seat 200 switches from a lying position to a sitting position.

[0040] The first linkage mechanism 210 includes multiple relatively rotatable transmission rods. A transmission angle is formed between adjacent transmission rods. When one transmission rod transmits power outward, the speed of power transmission varies with the size of the transmission angle. In this embodiment, the first linkage mechanism 210 can be a two-bar linkage. Specifically, the first linkage mechanism 210 includes a first transmission rod 211 and a second transmission rod 212 rotatably connected to each other. The first transmission rod 211 is rotatably connected to the base 100, and the second transmission rod 212 is rotatably connected to the movable seat 200. The second linkage mechanism 310 is drively connected to the second transmission rod 212, and the first transmission rod 211 and the second transmission rod 212 rotate... When the first linkage mechanism 210 moves away from each other, it is in an unfolded state. When the first transmission rod 211 and the second transmission rod 212 rotate to move closer to each other, the first linkage mechanism 210 is in a folded state, and a first transmission angle is formed between the first transmission rod 211 and the second transmission rod 212. When the first linkage mechanism 210 tends to be in an unfolded state, the first transmission angle tends to be larger. When the first linkage mechanism 210 tends to be in a folded state, the first transmission angle tends to be smaller. In practical applications, one end of the first transmission rod 211 is rotatably connected to the base 100, and the other end is rotatably connected to one end of the second transmission rod 212. The other end of the second transmission rod 212 is rotatably connected to the movable seat 200.

[0041] like Figure 2 and Figure 4 As shown, the first transmission rod 211 and the second transmission rod 212 form a two-bar linkage mechanism. When the movable seat 200 is in a seated position, the second transmission rod 212 is close to the first transmission rod 211. At this time, the first transmission angle is small. When the second end of the linear drive member 300 moves away from the first end, the second transmission rod 212 will be driven to rotate away from the first transmission rod 211 through the second linkage mechanism 310. At this time, the first transmission angle gradually increases, and the movement speed of the second transmission rod 212 increases. This can balance the gradually decreasing speed of the second linkage mechanism 310 during the transmission process, thereby driving the movable seat 200 to move at a uniform speed.

[0042] Similarly, the second linkage mechanism 310 includes multiple relatively rotatable transmission rods. A transmission angle is formed between adjacent transmission rods. When one transmission rod transmits power outward, the speed of power transmission varies with the size of the transmission angle. In this embodiment, the second linkage mechanism 310 can be a two-bar linkage. Specifically, the second linkage mechanism 310 includes a third transmission rod 311 and a fourth transmission rod 312 that are rotatably connected to each other. The second transmission rod 312 and the first end of the linear drive member 300 are rotatably connected to the third transmission rod 311, and the fourth transmission rod... 312 is rotatably connected to the base 100. When the third transmission rod 311 and the fourth transmission rod 312 rotate to move away from each other, the second linkage mechanism 310 is in an unfolded state; when the third transmission rod 311 and the fourth transmission rod 312 rotate to move closer to each other, the second linkage mechanism 310 is in a folded state, and a second transmission angle is formed between the third transmission rod 311 and the fourth transmission rod 312. When the second linkage mechanism 310 tends to be in an unfolded state, the second transmission angle tends to increase; when the second linkage mechanism 310 tends to be in a folded state, the second transmission angle tends to decrease.

[0043] like Figure 2 and Figure 4 As shown, the third transmission rod 311 and the fourth transmission rod 312 form a two-bar linkage. When the movable seat 200 is in a seated position, the third transmission rod 311 is away from the fourth transmission rod 312. At this time, the second transmission angle is relatively large. When the second end of the linear drive member 300 moves away from the first end, the power will be transmitted to the fourth transmission rod 312 through the third transmission rod 311. During this process, the second transmission angle gradually decreases, and the speed at which the third transmission rod 311 outputs power decreases, while the first transmission angle gradually increases, and the speed at which the second transmission rod 312 outputs power increases. This solves the problem of the speed change between the first linkage mechanism 210 and the second linkage mechanism 310 during the transmission process, thereby driving the movable seat 200 to move at a uniform speed.

[0044] In practical applications, one end of the fourth transmission rod 312 is rotatably connected to the base 100, and the other end is rotatably connected to one end of the third transmission rod 311. The position between the two ends of the third transmission rod 311 is rotatably connected to the position between the two ends of the second transmission rod 212. Specifically, the first end of the linear drive member 300 is rotatably connected to the end of the third transmission rod 311 away from the fourth transmission rod 312. The rotatable connection between the third transmission rod 311 and the second transmission rod 212 is located at the end of the third transmission rod 311 away from the fourth transmission rod 312. When the second end of the linear drive 300 moves away from the first end, it can drive the third transmission rod 311 to rotate on the second transmission rod 212. Since the rotational connection between the third transmission rod 311 and the second transmission rod 212 is located at the end of the third transmission rod 311 away from the fourth transmission rod 312, the amplitude of the rotation of the third transmission rod 311 relative to the fourth transmission rod 312 can be increased, the angle change of the second transmission angle can be accelerated, and the transmission speed of the first linkage mechanism 210 can be increased, thereby improving the sensitivity and speed of the state adjustment of the movable seat 200.

[0045] In the above embodiment, the first end of the linear drive member 300 can be directly rotatably connected to the end position of the third transmission rod 311. However, in this embodiment, a transition connection is added between the first end of the linear drive member 300 and the end of the third transmission rod 311. Specifically, a transmission member 320 is provided between the first end of the linear drive member 300 and the third transmission rod 311. The two sides of the transmission member 320 are respectively rotatably connected to the third transmission rod 311 and the first end of the linear drive member 300. The linear drive member 300 transmits power to the third transmission rod 311 through the transmission member 320, which can improve the degree of freedom of transmission of the third transmission rod 311, thereby improving the installation flexibility of the linear drive member 300. When the first end and the second end of the linear drive member 300 move relative to each other, the transmission member 320 can drive the third transmission rod 311 to rotate, and the relative rotation of the transmission member 320 on the third transmission rod 311 can adapt to the positional changes of the linear drive member 300 during its movement.

[0046] To facilitate the convenient rotatable connection between the transmission component 320 and the third transmission rod 311, in this embodiment, a transmission pipe 330 is connected to one side of the transmission component 320, and the transmission pipe 330 is rotatably connected to the third transmission rod 311. The transmission pipe 330 is fixed to one side of the transmission component 320, and its end is rotatably connected to the third transmission rod 311, allowing it to rotate relative to the third transmission rod 311. Thus, when the linear drive component 300 is working, it can drive the transmission component 320 to rotate around the axis of the transmission pipe 330 on the third transmission rod 311. In practical applications, the left and right sides of the movable seat 200 and the left and right sides of the base frame are respectively provided with a first linkage mechanism 210 and a second linkage mechanism 310. At this time, the third transmission rods 311 in the two second linkage mechanisms 310 can be interconnected through transmission bars to jointly drive the linkage mechanisms on their left and right sides.

[0047] When the first transmission angle decreases, the first transmission rod 211 and the second transmission rod 212 approach each other. When the first transmission rod 211 and the second transmission rod 212 approach each other to a certain distance, they will interfere with the transmission tube 330. In order to allow the first transmission rod 211 and the second transmission rod 212 to approach each other further, in this embodiment, a first recess 213 is provided on the top side of the first transmission rod 211. The first recess 213 is used to avoid the transmission tube 330 when it approaches. When the first transmission rod 211 rotates relative to the second transmission rod 212, the transmission tube 330 enters the first recess 213 on the top side of the first transmission rod 211. This allows the first transmission rod 211 and the second transmission rod 212 to be further folded, making the overall structure more compact.

[0048] Furthermore, when the first linkage mechanism 210 is in the folded state, the transmission tube 330 abuts against the first recess 213. When the transmission tube 330 moves into the first recess 213 and abuts against it, the first recess 213 restricts the transmission tube 330 from moving further. At this time, the first transmission rod 211 and the second transmission rod 212 cannot be folded further, and the first transmission angle changes to its minimum. The cooperation between the first recess 213 and the transmission tube 330 helps to stabilize the position of the movable seat 200.

[0049] Similarly, when the second transmission angle decreases, the third transmission rod 311 and the fourth transmission rod 312 approach each other. When the third transmission rod 311 and the fourth transmission rod 312 approach each other to a certain distance, the linear drive member 300 occupies a certain space in height, which will interfere with the continued rotation of the transmission member 320. Therefore, in this embodiment, a second recess 321 is provided on the top side of the transmission member 320. The second recess 321 is used to avoid the linear drive member 300 when they are relatively close. When the third transmission rod 311 and the fourth transmission rod 312 rotate and approach each other, the transmission member 320 rotates and gradually approaches the linear drive member 300. At this time, the second recess 321 on the transmission member 320 can avoid the end position of the linear drive member 300, so that the third transmission rod 311 and the fourth transmission rod 312 can be further folded, reducing the second transmission angle and making the overall structure more compact.

[0050] Furthermore, when the second linkage mechanism 310 is in the folded state, the first end of the linear drive member 300 abuts against the second recess 321. When the end of the linear drive member 300 moves into the second recess 321 and abuts against it, it restricts the transmission tube 330 from rotating further. At this time, the third transmission rod 311 and the fourth transmission rod 312 cannot be folded further, and the second transmission angle changes to its minimum. The cooperation between the second recess 321 and the transmission tube 330 helps to stabilize the position of the movable seat 200.

[0051] In the above embodiment, when the linear drive 300 is working, the power is transmitted to the first linkage mechanism 210, which will drive the first linkage mechanism 210 to unfold or fold directly. In order to delay the output of power from the linear drive 300 to the first linkage mechanism 210 and realize the phased power supply, in this embodiment, an elastic component 350 is connected between the first transmission rod 211 and the base 100. When the first linkage mechanism 210 moves from the folded state to the unfolded state or from the unfolded state to the folded state, the elastic component 350 first elastically deforms and then elastically recovers. The elastic component 350 can be a tension spring.

[0052] In this embodiment, the elastic member 350 can drive the first transmission rod 211 to rotate closer to the second transmission rod 212 or to rotate further away from the second transmission rod 212. In use, the second end of the linear drive member 300 can be connected to the transmission structure on the movable seat 200. For example, the second end of the linear drive member 300 can be connected to the linkage mechanism that drives the leg support 500 to extend. When the linear drive member 300 is working, the first end of the linear drive member 300 needs to overcome the elastic force of the elastic member 350. At this time, the first linkage mechanism 210 is not working, while the second end of the linear drive member 300 drives the linkage mechanism of the leg support 500 to work, thus realizing the extension of the leg support. The frame 500 unfolds from the movable seat 200. As the power provided by the linear drive 300 gradually increases, it overcomes the elastic force of the elastic component 350 and drives the first linkage mechanism 210 from the folded state to the unfolded state. During this process, the rotation of the first transmission rod 211 will cause the elastic component 350 to first deform elastically. Then, the first transmission rod 211 rotates in the opposite direction, causing the elastic component 350 to elastically recover. In this way, the elastic component 350 provides an elastic limiting force on the first linkage mechanism 210, so that the linear drive 300 can first drive the components on the movable seat 200, such as the leg support 500, to move, and then drive the movable seat 200 to slide on the base 100.

[0053] Furthermore, the maximum elastic force of the elastic component 350 is less than 500 Newtons. When the first linkage mechanism 210 is in the folded state, the elastic component 350 is vertically arranged, and the first transmission rod 211 is located below the elastic component 350. The elastic component 350 limits the maximum value of the first transmission rod 211 during initial rotation to no more than 500 Newtons. This helps to avoid the situation where the linear drive component 300 cannot drive the first linkage mechanism 210 to move, ensuring that the linear drive component 300 can first transmit the power of movement to the leg bracket 500 on the movable seat 200, and then transmit the power of movement to the first linkage mechanism 210, so as to drive the movable seat 200 to slide on the base 100. Because the elastic component 350 is vertically arranged, when the first linkage mechanism 210 is in the folded state and the first transmission rod 211 is located below the elastic component 350, the first transmission rod 211 cannot automatically move the first linkage mechanism 210 from the folded state to the unfolded state under its own weight.

[0054] To enhance the user experience of the seating, a backrest function can be added. Specifically, this invention also includes a backrest support 400, which is rotatably connected to the movable seat 200. The backrest support 400 can rotate downwards away from the movable seat 200 or upwards towards the movable seat 200. When the movable seat 200 is in a seated position, the backrest support 400 rotates upwards towards the movable seat 200, allowing the user to lean against it when sitting on the movable seat 200. When the movable seat 200 is in a reclining position, the backrest support 400 rotates downwards away from the movable seat 200, providing support for the user's head and back when lying down, thereby improving the user experience.

[0055] There are various implementation methods for the structure in which the back support 400 rotates on the movable seat 200. For example, a drive source such as a motor or rotary cylinder can be provided on the movable seat 200 to independently control the relative rotation of the back support 400 on the movable seat 200. Alternatively, a third linkage mechanism can be provided between the movable seat 200, the back support 400 and the base 100. When the movable seat 200 moves, the back support 400 can be driven to rotate relative to the movable seat 200 through the third linkage mechanism, thus reducing the need for a drive source.

[0056] Furthermore, this utility model also includes a leg support 500, which is disposed on the movable seat 200. The leg support 500 can extend away from the movable seat 200 or retract towards the movable seat 200. When the movable seat 200 is in a sitting or lying position, the leg support 500 can extend away from the movable seat 200 to provide support for the user's legs. When not in use, the leg support 500 can be retracted towards the movable seat 200, further enriching its functionality.

[0057] There are various implementation methods for the extension or retraction of the leg support 500 on the movable seat 200. For example, a drive source such as a motor screw, cylinder, or hydraulic cylinder can be provided on the movable seat 200 to independently control the movement of the leg support 500 on the movable seat 200. Alternatively, a fourth linkage mechanism can be provided between the linear drive 300, the movable seat 200, and the leg support 500. When the movable seat 200 moves, the fourth linkage mechanism can drive the leg support 500 to extend or retract on the movable seat 200, thus reducing the number of drive sources required.

[0058] Furthermore, this utility model also includes a footrest 600, which is disposed on the leg rest 500. The footrest 600 can extend away from the leg rest 500 or retract towards the leg rest 500. When the movable seat 200 is in a sitting or lying position, the footrest 600 can extend away from the movable seat 200 to provide support for the user's feet. When not in use, the footrest 600 can be retracted towards the leg rest 500, further enriching its functionality.

[0059] There are various implementations for the structure of the footrest 600 extending or retracting on the movable seat 200. For example, a drive source such as a motor screw, cylinder, or hydraulic cylinder can be provided on the leg support 500 to independently control the movement of the footrest 600 on the leg support 500. Alternatively, a fifth linkage mechanism can be provided between the leg support 500 and the footrest 600. When the leg support 500 moves, the fifth linkage mechanism can drive the footrest 600 to extend or retract on the leg support 500, thus reducing the number of drive sources required.

[0060] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A seating arrangement, characterized in that: include: Base (100); The movable seat (200) is slidably connected to the base (100); A first linkage mechanism (210) is connected between the base (100) and the movable seat (200), and the first linkage mechanism (210) has an unfolded or folded state; A second linkage mechanism (310) is connected between the first linkage mechanism (210) and the base (100). The second linkage mechanism (310) has an unfolded or folded state. The first linkage mechanism (210) and the second linkage mechanism (310) are connected in a transmission manner. When the movable seat (200) slides on the base (100), one of the first linkage mechanism (210) and the second linkage mechanism (310) tends to be in an unfolded state, and the other tends to be in a folded state.

2. A seating arrangement according to claim 1, characterized in that: It also includes a linear drive (300) having a first end that can move closer to or further away from each other, the first end of the linear drive (300) being drively connected to the second linkage mechanism (310), and the second end of the linear drive (300) being rotatably connected to the movable seat (200).

3. A seating arrangement according to claim 2, characterized in that: The first linkage mechanism (210) includes a first transmission rod (211) and a second transmission rod (212) rotatably connected to each other. The first transmission rod (211) is rotatably connected to the base (100), and the second transmission rod (212) is rotatably connected to the movable seat (200). The second linkage mechanism (310) is drively connected to the second transmission rod (212). When the first transmission rod (211) and the second transmission rod (212) rotate to move away from each other, the first linkage mechanism (210) is in an unfolded state; when the first transmission rod (211) and the second transmission rod (212) rotate to move closer to each other, the first linkage mechanism (210) is in a folded state.

4. A seating arrangement according to claim 3, characterized in that: The second linkage mechanism (310) includes a third transmission rod (311) and a fourth transmission rod (312) rotatably connected to each other. The first end of the second transmission rod (212) and the linear drive member (300) are respectively rotatably connected to the third transmission rod (311). The fourth transmission rod (312) is rotatably connected to the base (100). When the third transmission rod (311) and the fourth transmission rod (312) rotate to move away from each other, the second linkage mechanism (310) is in an unfolded state. When the third transmission rod (311) and the fourth transmission rod (312) rotate to move closer to each other, the second linkage mechanism (310) is in a folded state.

5. A seating arrangement according to claim 4, characterized in that: The first end of the linear drive (300) is rotatably connected to the end of the third transmission rod (311) away from the fourth transmission rod (312), and the rotatable connection between the third transmission rod (311) and the second transmission rod (212) is located at the end of the third transmission rod (311) away from the fourth transmission rod (312).

6. A seating arrangement according to claim 4, characterized in that: A transmission member (320) is provided between the first end of the linear drive member (300) and the third transmission rod (311), and the two sides of the transmission member (320) are respectively rotatably connected to the third transmission rod (311) and the first end of the linear drive member (300).

7. A seating arrangement according to claim 6, characterized in that: One side of the transmission component (320) is connected to a transmission tube (330), which is rotatably connected to the third transmission rod (311).

8. A seating arrangement according to claim 7, characterized in that: The top side of the first transmission rod (211) is provided with a first recess (213), which is used to avoid the transmission tube (330) when it approaches.

9. A seating arrangement according to claim 8, characterized in that: When the first linkage mechanism (210) is in the folded state, the transmission tube (330) abuts against the first recess (213).

10. A seating arrangement according to claim 6, characterized in that: The top side of the transmission member (320) is provided with a second recess (321), which is used to avoid the linear drive member (300) when it is relatively close to it.

11. A seating arrangement according to claim 10, characterized in that: When the second linkage mechanism (310) is in the folded state, the first end of the linear drive (300) abuts against the second recess (321).

12. A seating arrangement according to claim 3, characterized in that: An elastic component (350) is connected between the first transmission rod (211) and the base (100). When the first linkage mechanism (210) moves from a folded state to an unfolded state or from an unfolded state to a folded state, the elastic component (350) first elastically deforms and then elastically recovers.

13. A seating arrangement according to claim 12, characterized in that: The maximum elastic force of the elastic component (350) is less than 500 Newtons; when the first linkage mechanism (210) is in the folded state, the elastic component (350) is vertically arranged, and the first transmission rod (211) is located below the elastic component (350).

14. A seating arrangement according to claim 1, characterized in that: It also includes a back support (400) which is rotatably connected to the movable seat (200). The back support (400) can rotate downward away from the movable seat (200) or rotate upward toward the movable seat (200).

15. A seating arrangement according to claim 1, characterized in that: It also includes a leg support (500) disposed on the movable seat (200), the leg support (500) being able to extend away from the movable seat (200) or retract towards the movable seat (200).

16. A seating arrangement according to claim 15, characterized in that: It also includes a footrest (600) disposed on the leg rest (500), the footrest (600) being able to extend away from the leg rest (500) or retract towards the leg rest (500).

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