Seat assembly

Abstract

The application provides a seat assembly, which comprises a base, a seat cushion assembly and a backrest assembly. The seat cushion assembly comprises a first frame, a first driving assembly, a second frame and a second driving assembly. The first frame is connected with the base. The first driving assembly is used to drive the first frame to move relative to the base to adjust the position of the seat cushion assembly in a first direction, and the first direction is the height direction of the seat cushion assembly. The second frame is connected with the first frame. The second driving assembly is used to drive the second frame to rotate relative to the first frame to adjust the position of the end of the seat cushion assembly close to the backrest assembly in the first direction. The first driving assembly can adjust the first frame so that the front end of the seat cushion assembly is flush with the flat backrest assembly, and the second driving assembly can adjust the second frame so that the rear end of the seat cushion assembly is flush with the flat backrest assembly, thereby making the whole seat cushion assembly flush with the flat backrest assembly, and improving the comfort in the flat lying mode.

Description

Technical Field

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

[0002] Most existing vehicle seats have a reclining mode, where the backrest assembly rotates away from the seat cushion assembly to a flat position, allowing users to lie down and rest. When adjusting the seat from its normal sitting position to the reclining mode, the rear end of the seat cushion assembly is raised, making it level with the reclining backrest assembly. When the rear end of the seat cushion assembly 110 is level with the backrest assembly 120, the rear end of the seat cushion assembly 110 is often higher than the front end, meaning the seat cushion assembly 110 is tilted downwards from back to front. Figure 1 As shown, this affects the comfort of the user experience. Utility Model Content

[0003] The purpose of this invention is to provide a seat assembly that, when the seat is adjusted to a reclining mode, makes the entire seat cushion assembly flush with the flat backrest assembly, thereby improving the comfort of the user experience.

[0004] This utility model provides a seat assembly, comprising: A base, a backrest assembly, and a seat cushion assembly; the backrest assembly is rotatable relative to the base, and the seat cushion assembly is movable relative to the base; the seat cushion assembly includes: A first frame, the first frame being connected to the base; A first drive assembly, connected to the first frame, is used to drive the first frame to move relative to the base, so as to adjust at least the position of the end of the seat cushion assembly away from the backrest assembly in a first direction; the first direction is the height direction of the seat cushion assembly. A second frame is rotatably connected to the first frame about a preset axis; The second drive assembly, which is connected to the second frame, is used to drive the second frame to rotate relative to the first frame in order to adjust the position of one end of the seat cushion assembly near the backrest assembly in a first direction.

[0005] In an optional embodiment, the first frame is connected to the base via a first linkage assembly, and the first drive assembly is connected to the first linkage assembly to adjust the position of the end of the first frame away from the backrest assembly in a first direction and a second direction, wherein the first direction and the second direction are perpendicular.

[0006] In an optional embodiment, the first linkage assembly includes two first linkages disposed at one end of the first frame away from the backrest assembly and two second linkages disposed at one end of the first frame near the backrest assembly. One end of the two first linkages is hinged to the first frame and the other end is hinged to the base; one end of the two second linkages is hinged to the first frame and the other end is hinged to the base. At least one of the first link and the second link is directly or indirectly connected to the first drive assembly.

[0007] In an optional embodiment, the first linkage assembly further includes a first rotating shaft, and the two second linkages are fixedly connected to the first rotating shaft; the first rotating shaft is rotatably connected to the base.

[0008] In an optional embodiment, the base is provided with a first bracket, the first bracket is provided with a first mounting hole, the first rotating shaft is rotatably passed through the first mounting hole, and the first drive assembly is mounted on the first bracket and is connected to the first rotating shaft in a transmission manner.

[0009] In an optional embodiment, the first drive assembly includes a first motor, and a meshing gear and a gear plate, the first motor being mounted on the first bracket, the gear being connected to the output shaft of the first motor, and the gear plate being connected to the first rotating shaft.

[0010] In an optional embodiment, the first frame includes a first rod and two first side plates respectively connected to both ends of the first rod; The first side plate is hinged to the first connecting rod at one end away from the backrest assembly and to the second connecting rod at the other end near the backrest assembly.

[0011] In an optional embodiment, the first drive assembly includes a second motor, which is a push rod motor, with one end of the second motor connected to the first rod and the other end connected to the first rotating shaft.

[0012] In an optional implementation, the first drive assembly includes a first motor and a gear connected to the output shaft of the first motor, or the first drive assembly includes a push rod motor.

[0013] In an optional embodiment, one of the first frame and the second frame is provided with a second rotating shaft, and the other is provided with a second mounting hole adapted to the second rotating shaft. The second rotating shaft passes through the second mounting hole to realize the rotation of the second frame relative to the first frame; the preset axis is the axis of the second rotating shaft.

[0014] In an optional embodiment, the second drive component includes a third motor, which is a push rod motor, with one end of the third motor hinged to the second frame and the other end connected to the first frame.

[0015] In an optional embodiment, one of the second frame and the first frame is provided with a groove, and the other is provided with a guide that can move along the groove; When the second frame rotates relative to the first frame, the guide moves in the groove.

[0016] In an optional implementation, the first frame is connected to the base via a second linkage assembly, and the first drive assembly and the second linkage assembly are connected to adjust the position of the first frame away from the backrest assembly in the first direction.

[0017] In an optional embodiment, the second linkage assembly includes a third link and a fourth link disposed at one end of the first frame away from the backrest assembly and hinged to each other, the end of the third link away from the fourth link being hinged to the first frame, and the end of the fourth link away from the third link being hinged to the base. The first frame is hinged to the base at the other end in the second direction; the first drive assembly and the fourth link are connected.

[0018] In an optional embodiment, the first drive assembly includes a fourth motor, which is a push rod motor; one end of the fourth motor is connected to the base, and the other end is connected to the fourth connecting rod.

[0019] The seat assembly provided in this embodiment of the utility model includes a first drive assembly that can move a first frame relative to a base to adjust the position of the seat cushion assembly in a first direction; the first direction is the height direction of the seat cushion assembly. That is, the first drive assembly can adjust the position of the seat cushion assembly in the height direction, thereby aligning the end of the seat cushion assembly away from the backrest assembly with the backrest assembly laid flat. A second drive assembly can rotate a second frame relative to the first frame, adjusting the height position of the end of the seat cushion assembly closest to the backrest assembly. Thus, through the combined action of the first and second drive assemblies, it can be ensured that the entire seat cushion assembly and the flat backrest assembly remain on the same plane, improving the user's comfort in reclining mode. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a simplified diagram illustrating the seat in a flat-lying mode in existing technology. Figure 2 This is a schematic diagram of the skeleton structure of the seat assembly in the normal sitting posture mode in an embodiment of this utility model; Figure 3 This is a schematic diagram of the frame structure of the seat assembly in the lying-flat mode in an embodiment of this utility model; Figure 4 This is a schematic diagram of the overall structure of the seat assembly in the lying-flat mode in an embodiment of this utility model; Figure 5 This is a schematic diagram of the overall structure of the seat assembly frame in an embodiment of this utility model; Figure 6 for Figure 5 A schematic diagram of the split structure; Figure 7 This is a schematic diagram of the structure of the first frame and the first connecting rod assembly of the seat assembly in an embodiment of the present utility model; Figure 8 for Figure 7 A schematic diagram of the split structure; Figure 9 This is a schematic diagram of the structure of the base of the seat assembly in an embodiment of the present utility model; Figure 10 This is a schematic diagram of the structure in which the first rotating shaft of the seat assembly is mounted on the base in an embodiment of the present invention; Figure 11 This is a schematic diagram of a structure connecting the first drive assembly, the first linkage assembly, and the first frame of the seat assembly in an embodiment of the present utility model. Figure 12 This is a schematic diagram of a connection structure of the first drive component, the first frame, the second frame, and the base of the seat assembly in an embodiment of the present utility model; Figure 13 This is a schematic diagram of a connection structure between the first drive component and the first frame of the seat assembly in an embodiment of the present utility model; Figure 14 This is a schematic diagram of a connection structure between the first frame and the second frame of the seat assembly in an embodiment of this utility model; Figure 15This is a first-view structural schematic diagram of the second frame of the seat assembly in an embodiment of the present utility model; Figure 16 This is a structural schematic diagram of the second frame of the seat assembly in an embodiment of the present invention from a second perspective; Figure 17 This is an exploded structural diagram of the second frame of the seat assembly in an embodiment of the present utility model; Figure 18 This is a schematic diagram of the structure of the fifth side plate of the second frame of the seat assembly in this embodiment of the present invention; Figure 19 This is a first-view structural schematic diagram of the initial state of the seat assembly in an embodiment of the present invention, in which the first drive assembly does not drive the first linkage assembly to rotate. Figure 20 This is a second-view structural schematic diagram of the initial state of the seat assembly in an embodiment of the present invention, in which the first drive assembly does not drive the first linkage assembly to rotate. Figure 21 This is a simplified kinematic diagram of the initial state of the seat assembly in this embodiment of the present invention, in which the first drive assembly does not drive the first linkage assembly to rotate. Figure 22 This is a structural schematic diagram from a first perspective of the first drive assembly driving the first linkage assembly to rotate, causing the first frame to lift forward and upward in an embodiment of the present utility model. Figure 23 This is a second-view structural diagram of the seat assembly in an embodiment of the present invention, showing the first drive assembly driving the first linkage assembly to rotate, causing the first frame to be lifted forward and upward. Figure 24 This is a simplified schematic diagram of the motion principle of the seat assembly in this embodiment of the present invention, in which the first drive assembly drives the first linkage assembly to rotate, causing the first frame to lift forward and upward. Figure 25 This is a first-view structural diagram of the seat assembly in an embodiment of the present invention, showing the rear end of the seat cushion assembly being raised after the second frame of the seat assembly rotates relative to the first frame. Figure 26 This is a second-view structural diagram of the seat assembly in an embodiment of the present invention, showing the rear end of the seat cushion assembly being raised after the second frame of the seat assembly rotates relative to the first frame. Figure 27 This is a simplified schematic diagram of the motion principle of the seat assembly in this embodiment of the present invention, showing how the rear end of the seat cushion assembly is lifted after the second frame of the seat assembly rotates relative to the first frame. Figure 28 This is a schematic diagram of the structure of the seat assembly including two third motors in an embodiment of the present invention; Figure 29 for Figure 28 A schematic diagram of the split structure; Figure 30 This is a schematic diagram of the connection between the first frame and the second link assembly of the seat assembly in an embodiment of this utility model; Figure 31 for Figure 30 A schematic diagram of the split structure; Figure 32 This is a schematic diagram of the initial state of the seat assembly in an embodiment of the present invention, in which the second linkage assembly does not drive the first frame to move. Figure 33 This is a structural diagram of the seat assembly in an embodiment of the present invention, showing the state after the second linkage assembly drives the first frame to achieve zero-pressure front-end lifting. Figure 34 This is a schematic diagram of the structure of the seat assembly after the first drive component drives the second frame to lift the rear end of the seat cushion assembly in an embodiment of the present invention.

[0022] Icons: 100 - Seat assembly; 110, 10 - Seat cushion assembly; 120, 20 - Backrest assembly; 3 - First frame; 301 - First rod; 313 - First mounting plate; 304 - First side plate; 3041 - Mounting through hole; 3042 - Third bolt; 3043 - Threaded chassis; 350 - First drive assembly; 307 - First motor; 3071 - Gear; 3072 - Gear plate; 320 - Second motor; 321 - Fourth bracket; 319 - Fifth bracket; 302 - First connecting rod; 309 - First pivot; 3091 - Second connecting rod; 312 - Support; 33 - Rivet; 34 - First bushing; 51 - Third connecting rod; 52 - Fourth connecting rod; 53-Fourth rod; 54-Seventh bracket; 2-Second frame; 202-Third rod; 203-Fifth side plate; 201-Second rotating shaft; 2033-Second mounting hole; 212-First bolt; 211-Threaded base; 210-Second bushing; 220-Second drive assembly; 206-Third motor; 207-Second bracket; 205-Third bracket; 2041-Slide groove; 310-Second bolt; 32-Nut; 4-Base; 401-Second rod; 4011-First bracket; 4012-First mounting hole; 402-Third side plate; 4033-Third mounting hole; 405-First side plate; 407-Fourth motor; 408-Eighth bracket. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "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 utility model based on the specific circumstances.

[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please combine Figures 2 to 4 This utility model provides a seat assembly 100, including a seat cushion assembly 10 and a backrest assembly 20. The seat cushion assembly 10 and the backrest assembly 20 are located between... Figure 2 The normal sitting posture shown is adjusted as follows Figure 3 In the flat reclining mode shown, it ensures that the seat cushion assembly 10 and the flat backrest assembly 20 remain on the same plane, as shown. Figure 4 As shown, this enhances user comfort in reclining mode. It should be noted that the seat cushion assembly 10 also includes foam material and a seat cushion cover covering the foam material, the first frame 3, and the second frame 2. The backrest assembly 20 also includes foam material and a backrest cover covering the foam material, the backrest frame, etc. Here, "same plane" means that the seat cushion cover and the backrest cover are on the same plane.

[0031] Please combine Figure 5 and Figure 6 The seat assembly 100 includes a base 4, a seat cushion assembly 10, and a backrest assembly 20. The backrest assembly 20 is rotatable relative to the base 4, and the seat cushion assembly 10 is movable relative to the base 4. The seat cushion assembly 10 includes a first frame 3, a first drive assembly 350, a second frame 2, and a second drive assembly 220. The first frame 3 is connected to the base 4. The first drive assembly 350 is connected to the first frame 3 and is used to drive the first frame 3 to move relative to the base 4, so as to adjust at least the position of the end of the seat cushion assembly 10 away from the backrest assembly 20 (the front end of the seat cushion assembly 10) in a first direction; the first direction is the height direction of the seat cushion assembly 10. The second frame 2 and the first frame 3 are rotatably connected about a preset axis. The second drive assembly 220 is connected to the second frame 2 and is used to drive the second frame 2 to rotate relative to the first frame 3, so as to adjust the position of the end of the seat cushion assembly 10 near the backrest assembly 20 (the rear end of the seat cushion assembly 10) in the first direction. In this way, the first drive component 350 can adjust the first frame 3 so that the front end of the seat cushion assembly 10 is flush with the flat backrest assembly 20, and the second drive component 220 can adjust the second frame 2 so that the rear end of the seat cushion assembly 10 is flush with the flat backrest assembly 20, thereby making the entire seat cushion assembly 10 flush with the flat backrest assembly 20, thus improving the comfort in the reclining mode.

[0032] Please combine Figure 7 and Figure 8Optionally, the first frame 3 is connected to the base 4 via a first linkage assembly, and the first drive assembly 350 is connected to the first linkage assembly to adjust the position of the end of the first frame 3 away from the backrest assembly 20 in a first direction and a second direction, wherein the first direction and the second direction are perpendicular. In this embodiment, the second direction is the front-rear direction of the seat cushion assembly 10.

[0033] The first linkage assembly adopts a four-bar linkage structure. During rotation, this structure enables the first frame 3 to translate in both the first and second directions, simultaneously achieving movement of the first frame 3 in both the front-back and height directions. As easily understood, the height movement of the first frame 3, such as lifting, ensures that the seat cushion assembly 10 is flush with the flat backrest assembly 20. The front-back movement of the first frame 3, such as moving forward, ensures that the seat cushion assembly 10 moves forward, increasing the distance between the backrest assembly 20 and the seat cushion assembly 10. This provides more rotational space for the backrest assembly 20 to rotate to a flat position and also provides more space for lifting the seat cushion assembly 10, preventing misalignment between the backrest assembly 20 and the seat cushion assembly 10 during adjustment. Figure 21 The aesthetic problems caused by interference and compression at point A, and the problem of stroke jamming during adjustment.

[0034] The first linkage assembly includes two first linkages 302 disposed at the end of the first frame 3 away from the backrest assembly 20 and two second linkages 3091 disposed at the end of the first frame 3 near the backrest assembly 20. One end of each of the two first linkages 302 is hinged to the first frame 3, and the other end is hinged to the base 4. One end of each of the two second linkages 3091 is hinged to the first frame 3, and the other end is hinged to the base 4. At least one of the first linkages 302 and the second linkages 3091 is directly or indirectly connected to the first drive assembly 350.

[0035] Optionally, the first frame 3 includes a first rod 301 and two first side plates 304 respectively connected to both ends of the first rod 301. The two first side plates 304 are arranged opposite each other in a third direction. The third direction is perpendicular to the first direction and the second direction, respectively. In this embodiment, the third direction can be understood as the left-right direction of the seat cushion assembly 10.

[0036] One of the ends of the first side plate 304 away from the backrest assembly 20 and the first rod 301 is hinged to the first connecting rod 302, and the end of the first side plate 304 near the backrest assembly 20 is hinged to the second connecting rod 3091.

[0037] Optionally, the first side plate 304 has a mounting through hole 3041, and a bushing is provided inside the mounting through hole 3041. The second connecting rod 3091 is fixedly connected to a threaded base plate 3043, and the third bolt 3042 passes through the bushing and is screwed to the threaded base plate 3043. In this way, the second connecting rod 3091 and the first side plate 304 can rotate relative to each other around the third bolt 3042.

[0038] In this embodiment, two second connecting rods 3091 are fixedly connected to the first rotating shaft 309, and the first rotating shaft 309 is rotatably connected to the base 4. The first driving assembly 350 is connected to the first rotating shaft 309 and can drive the second connecting rods 3091 to rotate, thereby driving the first frame 3 as a whole to move in the first direction and the second direction.

[0039] Optionally, two first connecting rods 302 are respectively hinged to both ends of the first rod 301. First mounting plates 313 are fixedly connected to both ends of the first rod 301. The two first connecting rods 302 are respectively hinged to the first mounting plates 313 at both ends. Of course, in some embodiments, the two first connecting rods 302 can also be hinged to the first side plate 304; this is not specifically limited here. Two second connecting rods 3091 are hinged to the end of the first side plate 304 away from the first rod 301.

[0040] The ends of the two second connecting rods 3091 away from the first frame 3 are respectively fixedly connected to the first rotating shaft 309. The first rotating shaft 309 is rotatably connected to the base 4, and the first drive assembly 350 is drively connected to the first rotating shaft 309.

[0041] Please combine Figure 9 and Figure 10 Optionally, the base 4 includes a second rod 401 and two third side plates 402 respectively connected to both ends of the second rod 401. The two third side plates 402 are arranged opposite each other in a third direction. The second rod 401 is provided with a first bracket 4011, the first bracket 4011 is provided with a first mounting hole 4012, and the two third side plates 402 are respectively provided with third mounting holes 4033. The first mounting hole 4012 and the third mounting hole 4033 are arranged coaxially. A first rotating shaft 309 is rotatably passed through the first mounting hole 4012, and both ends of the first rotating shaft 309 are rotatably passed through the third mounting holes 4033 of the two third side plates 402 respectively.

[0042] Optionally, support members 312 are fixedly connected to both ends of the first rotating shaft 309. The support members 312 are connected to the third side plate 402, and the support members 312 and rivets 33 are respectively located on both sides of the third side plate 402. A first bushing 34 is provided in the third mounting hole 4033, and the rivets 33 pass through the first bushing 34 and are fixedly connected to the support members 312. This allows the first rotating shaft 309 to rotate relative to the third side plate 402, that is, it allows the first rotating shaft 309 to rotate relative to the base 4.

[0043] The first drive assembly 350 is mounted on the first bracket 4011. Optionally, the first drive assembly 350 includes a first motor 307, and a gear 3071 and a gear plate 3072 meshing with each other. The gear 3071 is connected to the output shaft of the first motor 307, and the gear plate 3072 is connected to the first frame 3. Optionally, the gear plate 3072 is fixedly connected to the first rotating shaft 309, and the first motor 307 is mounted on the first bracket 4011. The first motor 307 drives the gear 3071 to rotate, the gear 3071 drives the gear plate 3072 to rotate, the first rotating shaft 309 and the gear plate 3072 rotate together, driving the two second connecting rods 3091 to rotate, thereby driving the first frame 3 to move in the first direction and the second direction.

[0044] Please combine Figures 11 to 13 In some other embodiments, the first drive assembly 350 includes a second motor 320, which is a push rod motor. One end of the second motor 320 is connected to the first rotating shaft 309, and the other end is connected to the first rod 301.

[0045] Optionally, a fourth bracket 321 is fixedly connected to the first rod 301, and a fifth bracket 319 is fixedly connected to the first rotating shaft 309. The end of the fourth bracket 321 away from the first rod 301 is hinged to one end of the second motor 320, and the end of the fifth bracket 319 away from the first rotating shaft 309 is hinged to the other end of the second motor 320. Thus, when the second motor 320 drives the lead screw to extend axially, the first connecting rod 302 and the second connecting rod 3091 rotate clockwise, causing the first frame 3 to move forward and upward. Conversely, when the second motor 320 drives the lead screw to retract axially, the first connecting rod 302 and the second connecting rod 3091 rotate counterclockwise, causing the first frame 3 to move backward and downward.

[0046] It is easy to understand that the first drive assembly 350 may include a first motor 307 and a gear 3071 connected to the output shaft of the first motor 307. Alternatively, the first drive assembly 350 may also include a push rod type second motor 320, which is not specifically limited here.

[0047] Please combine Figure 14 It should be noted that in this embodiment, the second frame 2 rotates relative to the first frame 3 to lift the rear end of the seat assembly 10. The second frame 2 can rotate relative to the first frame 3 under the driving action of the second drive assembly 220 to lift the rear end of the seat assembly 10.

[0048] Please combine Figures 15 to 18In the first frame 3 and the second frame 2, one is provided with a second rotating shaft 201, and the other is provided with a second mounting hole 2033 adapted to the second rotating shaft 201. The second rotating shaft 201 passes through the second mounting hole 2033 to realize the rotation of the second frame 2 relative to the first frame 3. The preset axis is the axis of the second rotating shaft 201. Optionally, the first frame 3 is fixedly connected to the second rotating shaft 201, and the second frame 2 is provided with the second mounting hole 2033. The second frame 2 is rotatably fitted onto the second rotating shaft 201 through the second mounting hole 2033. The second rotating shaft 201 is located at the front end of the first frame 3, so that the second frame 2 as a whole can rotate around the second rotating shaft 201 to raise the rear end of the seat cushion assembly 10 and adjust the position of the rear end of the seat cushion assembly 10 in the height direction.

[0049] In this embodiment, the second frame 2 includes a third rod 202 and two fifth side plates 203 fixedly connected to both ends of the third rod 202. The ends of the two fifth side plates 203 furthest from the third rod 202 are respectively provided with second mounting holes 2033. Both ends of the second rotating shaft 201 pass through the second mounting holes 2033, allowing the second frame 2 to rotate as a whole around the second rotating shaft 201.

[0050] Optionally, the first rod 301 of the first frame 3 is fixedly connected to the first mounting plate 313, and the second rotating shaft 201 is fixedly connected to the first mounting plate 313. The end of the second rotating shaft 201 is provided with a first bolt 212, a threaded base 211, and a second bushing 210. The threaded base 211 and the end of the second rotating shaft 201 are welded together. The second bushing 210 is located in the second mounting hole 2033. The first bolt 212 passes through the second bushing 210 from the outside of the fifth side plate 203 and is screwed to the threaded base 211. This allows the second frame 2 to rotate around the second rotating shaft 201. It is worth noting that if the second motor 320 drives the first connecting rod assembly, the second rotating shaft 201 can also be fixedly connected to the fourth bracket 321; this is not specifically limited here.

[0051] Of course, in some other embodiments, a second mounting hole 2033 may be provided on the first frame 3, and a second rotating shaft 201 may be provided on the second frame 2. The second rotating shaft 201 is rotatably provided in the second mounting hole 2033 so as to realize the rotation of the second frame 2 relative to the first frame 3. No specific limitation is made here.

[0052] Two fifth side plates 203 overlap one-to-one with two first side plates 304. Optionally, a shock-absorbing pad is provided between the fifth side plate 203 and the first side plate 304. In this embodiment, shock-absorbing pads are provided on each of the two first side plates 304. In some embodiments, shock-absorbing pads may also be provided on the fifth side plate 203.

[0053] The second drive assembly 220 is connected to the second frame 2 to drive the second frame 2 to rotate around the second pivot 201. Optionally, the second drive assembly 220 includes a third motor 206, which is a push rod motor. One end of the third motor 206 is hinged to the second frame 2, and the other end is connected to the first frame 3. In this embodiment, the third rod 202 of the second frame 2 is fixedly connected to the second bracket 207, and the first rod 301 of the first frame 3 is fixedly connected to the third bracket 205. One end of the third motor 206 is hinged to the end of the second bracket 207 away from the second frame 2, and the other end of the third motor 206 is hinged to the end of the third bracket 205 away from the first frame 3. Thus, when the third motor 206 drives the lead screw to extend axially, it can drive the second frame 2 as a whole to rotate clockwise around the second pivot 201, thereby raising the rear end of the seat cushion assembly 10 and adjusting the height of the rear end of the seat cushion assembly 10.

[0054] It is easy to understand that, since the rotation of the second frame 2 raises the rear end of the seat assembly 10, the second pivot 201 is positioned relatively close to the front end of the seat assembly 10. This results in a relatively long distance between the third rod 202 and the rotation center (second pivot 201), and the two fifth side plates 203 form a cantilever structure with relatively long cantilever arms. To improve stability during rotation and prevent rotational deviation, this embodiment also includes a rotation limiting structure. Specifically, one of the second frame 2 and the first frame 3 has a groove 2041, and the other has a guide that can move along the groove 2041. In this embodiment, the two fifth side plates 203 each have a groove 2041, and the first frame 3 has a guide at a position corresponding to the groove 2041. The guide uses a second bolt 310. Optionally, nuts 32 are welded to the outer sides of the two first side plates 304 of the first frame 3, and the second bolt 310 passes through the inner side of the first side plate 304 and is screwed onto the nut 32 on the outer side of the first side plate 304. Thus, the second bolt 310, located inside the first side plate 304, is positioned within the groove 2041 of the fifth side plate 203. When the second frame 2 rotates relative to the first frame 3 around the second pivot 201, the second bolt 310 can move relative to the groove 2041, thereby preventing rotational misalignment.

[0055] Figures 19 to 21 This is a structural schematic diagram of the second frame 2 of the seat assembly 100 in the initial state where it does not rotate relative to the first frame 3, as shown in this embodiment of the present invention. It also shows a schematic diagram of the initial state of the first frame 3 when the first drive assembly 350 does not drive the first linkage assembly to rotate. Figure 21 The arrow at point A indicates the direction of rotation when the end of the seat cushion assembly 10 near the backrest assembly 20 is to be lifted. Figures 22 to 24 A schematic diagram shows the state in which the first frame 3 is lifted forward and upward after the first drive assembly 350 drives the first linkage assembly to rotate. Figures 25 to 27 This is a schematic diagram showing the structure of the seat assembly 100 in this embodiment of the present invention, where the second frame 2 rotates relative to the first frame 3, causing the rear end of the seat cushion assembly 10 to be raised. Figure 26 The arrow in the diagram indicates the direction of rotation of the second frame 2 when the rear end of the seat assembly 10 is raised. Figure 27 The arrow in the diagram indicates the direction of the push rod movement of the third motor 206 when the rear end of the seat cushion assembly 10 is lifted. After the lifting is completed, the rear end of the seat cushion assembly 10 is flush with the flat backrest assembly 20.

[0056] In some implementations, to improve structural reliability and ensure sufficient power for the lifting of the second frame 2, two or more third motors 206 may be provided. (Please refer to...) Figure 28 and Figure 29 Optionally, the second drive assembly 220 includes two third motors 206; one end of each of the two third motors 206 is hinged to a second bracket 207, and the other end of each of the two third motors 206 is hinged to a third bracket 205. In this embodiment, a third rod 202 is fixedly connected to a second bracket 207, and a first rod 301 is fixedly connected to two third brackets 205. The two third motors 206 are arranged side-by-side in a third-direction orientation. One end of one third motor 206 is hinged to one of the third brackets 205, and the other end is hinged to one side of a second bracket 207. One end of the other third motor 206 is hinged to the other third bracket 205, and the other end is hinged to the other side of a second bracket 207.

[0057] Please combine Figure 30 and Figure 31 In some embodiments, the first frame 3 is connected to the base 4 via a second linkage assembly, and the first drive assembly 350 is connected to the second linkage assembly to adjust the position of the first frame 3 in a first direction. The second linkage assembly includes a third link 51 and a fourth link 52 disposed at the end of the first frame 3 away from the backrest assembly 20 and hinged to each other. The end of the third link 51 away from the fourth link 52 is hinged to the end of the first frame 3 in the second direction, and the end of the fourth link 52 away from the third link 51 is hinged to the base 4.

[0058] Optionally, a first mounting plate 313 is fixedly connected to the first member 301 of the first frame 3. One end of the third link 51 is hinged to the first mounting plate 313, and the other end is hinged to the fourth link 52. The base 4 includes a second member 401 and two first side plates 405 respectively connected to both ends of the second member 401. The two first side plates 405 are arranged opposite each other in a third direction. The end of the fourth link 52 away from the third link 51 is hinged to the first side plate 405 of the base 4.

[0059] The other end of the first frame 3 in the second direction is hinged to the base 4. That is, the ends of the two first side plates 304 in the first frame 3 away from the first rod 301 are respectively hinged to the second rod 401 of the base 4.

[0060] The first drive assembly 350 is connected to the fourth link 52. Optionally, the first drive assembly 350 includes a fourth motor 407, which is a push rod motor. One end of the fourth motor 407 is connected to the base 4, and the other end is connected to the fourth link 52. In this embodiment, the second link assembly also includes a fourth rod 53, which is fixedly connected to both fourth links 52. A seventh bracket 54 (see...) is fixedly connected to the fourth rod 53. Figure 32 An eighth bracket 408 is provided on the base 4. The eighth bracket 408 can be fixedly connected to the second rod 401 or connected to other positions on the base 4. One end of the fourth motor 407 is hinged to the seventh bracket 54, and the other end is hinged to the eighth bracket 408. With this configuration, when the fourth motor 407 extends along the axial direction of the lead screw, it will drive the fourth connecting rod 52 to rotate counterclockwise, thereby lifting the first frame 3 upward to adjust the position of the first frame 3 in the height direction, that is, to adjust the position of the front end of the seat cushion assembly 10 in the height direction, thus achieving zero-pressure front end lifting. Figure 32 This is a schematic diagram of the initial state in which the second linkage assembly does not move the first frame 3. Figure 33 A schematic diagram of the structure after the second linkage assembly drives the first frame 3 to achieve zero-pressure front-end lifting; Figure 34 A schematic diagram of the structure in which the first drive component 350 drives the second frame 2 to achieve the rear end of the seat cushion assembly 10 after lifting.

[0061] In this embodiment, the zero-pressure forward lifting mechanism enables a zero-gravity reclining mode for the seat, enhancing user comfort. Furthermore, by adjusting the zero-pressure forward lifting mechanism in conjunction with the rearward lifting adjustment of the seat cushion assembly 10 of the second frame 2, a fully flat reclining mode can be achieved, ensuring that the plane of the seat cushion assembly 10 and the plane of the backrest assembly 20 are on the same plane.

[0062] In summary, the seat assembly 100 provided in this embodiment of the present invention has the following beneficial effects: The seat assembly 100 utilizes a first linkage assembly, a first frame 3, and a first drive assembly 350 to lift the seat cushion assembly 10 forward and upward, avoiding interference or compression with the backrest assembly 20 during the lifting process. Combined with the rotation of the second frame 2 relative to the first frame 3, the rear end of the seat cushion assembly 10 can be lifted, ensuring that the seat cushion assembly 10 and the backrest assembly 20 are on the same plane in the reclining mode, improving user comfort. Furthermore, the second linkage assembly, the first frame 3, and the first drive assembly 350 enable zero-pressure lifting of the front end of the seat cushion assembly 10, achieving a zero-gravity reclining mode. The combination of this zero-pressure front end lifting and the rear end lifting of the seat cushion assembly 10, achieved through the rotation of the second frame 2 relative to the first frame 3, ensures that the seat cushion assembly 10 and the backrest assembly 20 are on the same plane in the reclining mode, further enhancing user comfort.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model 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 or all of the technical features. Any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. A seat assembly, characterized in that, include: The base (4), backrest assembly (20), and seat cushion assembly (10); the backrest assembly (20) is rotatable relative to the base (4), and the seat cushion assembly (10) is movable relative to the base (4); the seat cushion assembly (10) includes: The first frame (3) is connected to the base (4); A first drive assembly (350) is connected to the first frame (3) and is used to drive the first frame (3) to move relative to the base (4) to at least adjust the position of the end of the seat cushion assembly (10) away from the backrest assembly (20) in a first direction; the first direction is the height direction of the seat cushion assembly (10). The second frame (2) and the first frame (3) are rotatably connected about a preset axis; The second drive assembly (220) is connected to the second frame (2) and is used to drive the second frame (2) to rotate relative to the first frame (3) to adjust the position of the end of the seat cushion assembly (10) near the backrest assembly (20) in a first direction.

2. The seat assembly according to claim 1, characterized in that, The first frame (3) is connected to the base (4) via a first linkage assembly. The first drive assembly (350) is connected to the first linkage assembly to adjust the position of the end of the first frame (3) away from the backrest assembly (20) in a first direction and a second direction, wherein the first direction and the second direction are perpendicular.

3. The seat assembly according to claim 2, characterized in that, The first linkage assembly includes two first linkages (302) disposed at one end of the first frame (3) away from the backrest assembly (20) and two second linkages (3091) disposed at one end of the first frame (3) near the backrest assembly (20). One end of the two first linkages (302) is hinged to the first frame (3) and the other end is hinged to the base (4); one end of the two second linkages (3091) is hinged to the first frame (3) and the other end is hinged to the base (4). At least one of the first link (302) and the second link (3091) is directly or indirectly connected to the first drive assembly (350).

4. The seat assembly according to claim 3, characterized in that, The first link assembly also includes a first pivot (309), and two second links (3091) are fixedly connected to the first pivot (309); the first pivot (309) is rotatably connected to the base (4).

5. The seat assembly according to claim 4, characterized in that, The base (4) is provided with a first bracket (4011), the first bracket (4011) is provided with a first mounting hole (4012), the first rotating shaft (309) is rotatably passed through the first mounting hole (4012), and the first drive assembly (350) is installed on the first bracket (4011) and is connected to the first rotating shaft (309) in a transmission connection.

6. The seat assembly according to claim 5, characterized in that, The first drive assembly (350) includes a first motor (307), a gear (3071) and a toothed plate (3072) that mesh with each other. The first motor (307) is mounted on the first bracket (4011). The gear (3071) is connected to the output shaft of the first motor (307), and the toothed plate (3072) is connected to the first rotating shaft (309).

7. The seat assembly according to claim 4, characterized in that, The first frame (3) includes a first rod (301) and two first side plates (304) respectively connected to the two ends of the first rod (301). The first side plate (304) is hinged to the first connecting rod (302) at one end away from the backrest assembly (20) and the first rod (301), and the first side plate (304) is hinged to the second connecting rod (3091) at one end near the backrest assembly (20).

8. The seat assembly according to claim 7, characterized in that, The first drive assembly (350) includes a second motor (320), which is a push rod motor. One end of the second motor (320) is connected to the first rod (301), and the other end is connected to the first rotating shaft (309).

9. The seat assembly according to claim 1, characterized in that, The first drive assembly (350) includes a first motor (307) and a gear (3071) connected to the output shaft of the first motor (307), or the first drive assembly (350) includes a push rod motor.

10. The seat assembly according to claim 1, characterized in that, In the first frame (3) and the second frame (2), one is provided with a second rotating shaft (201), and the other is provided with a second mounting hole (2033) adapted to the second rotating shaft (201). The second rotating shaft (201) passes through the second mounting hole (2033) to realize the rotation of the second frame (2) relative to the first frame (3); the preset axis is the axis of the second rotating shaft (201).

11. The seat assembly according to claim 10, characterized in that, The second drive assembly (220) includes a third motor (206), which is a push rod motor. One end of the third motor (206) is hinged to the second frame (2), and the other end is connected to the first frame (3).

12. The seat assembly according to any one of claims 1 to 11, characterized in that, Of the second frame (2) and the first frame (3), one is provided with a slide groove (2041), and the other is provided with a guide that can move along the slide groove (2041); When the second frame (2) rotates relative to the first frame (3), the guide moves in the groove (2041).

13. The seat assembly according to claim 1, characterized in that, The first frame (3) is connected to the base (4) via a second linkage assembly. The first drive assembly (350) and the second linkage assembly are connected to adjust the position of the first frame (3) away from the backrest assembly (20) in the first direction.

14. The seat assembly according to claim 13, characterized in that, The second linkage assembly includes a third link (51) and a fourth link (52) disposed on the first frame (3) away from the backrest assembly (20) and hinged to each other. The third link (51) is hinged to the first frame (3) at the end away from the fourth link (52), and the fourth link (52) is hinged to the base (4) at the end away from the third link (51). The first frame (3) is hinged to the base (4) at the other end in the second direction; the first drive assembly (350) and the fourth link (52) are connected.

15. The seat assembly according to claim 14, characterized in that, The first drive assembly (350) includes a fourth motor (407), which is a push rod motor; one end of the fourth motor (407) is connected to the base (4), and the other end is connected to the fourth connecting rod (52).

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