Seat cushion assembly, seat and system

Abstract

The utility model provides a cushion assembly, a seat and a system. Wherein the seat cushion comprises a first hollow body, and the first hollow body can be filled with fluid to expand; a cushion space is limited by the cushion frame, and the first hollow body is located in the cushion space; the cushion foam comprises a front part and a rear part which are respectively positioned in the length direction; and in the height direction, the rear part is adjacent to the first hollow body, and when the first hollow body is filled with fluid to expand, the rear part can be jacked up by the expanded first hollow body, so that the rear part can be lifted relative to the height of the front part.

Description

Technical Field

[0001] The present application relates to a seat cushion assembly, a seat and a system. Background Art

[0002] With the development of automotive user requirements, there is currently a solution for a car seat to achieve a large bed mode in which it can lie down in the car cockpit. That is, when the user in the cockpit needs to lie down and rest, the seat in the cockpit can be reclined, that is, the backrest of the seat is reclined to be nearly flush with the seat cushion. At this time, the seat is equivalent to a bed, which is the large bed mode.

[0003] However, the inventor has found that in the current large bed mode, there is a large height difference at the connection between the rear end of the seat cushion and the backrest, which affects the comfort of the large bed mode. As Figure 9 shown in the comparative example, this will cause the knees 2001 of the user 2000 to be suspended and the head 2001 to be inverted, affecting the comfort of the user.

[0004] Therefore, there is a need in the art for a new seat cushion assembly, seat and system to improve the user experience of seat users, especially the comfort of the large bed mode. Utility Model Content

[0005] The purpose of the present application is to provide a seat cushion assembly.

[0006] Another purpose of the present application is to provide a seat.

[0007] Another purpose of the present application is to provide a system.

[0008] A seat cushion assembly according to a first aspect of the present application includes a first hollow body capable of expanding by filling with a fluid; a seat cushion frame defining a seat cushion space, the first hollow body being located in the seat cushion space; a seat cushion foam including a front part and a rear part respectively located in the length direction; wherein, in the height direction, the rear part is adjacent to the first hollow body, and when the first hollow body fills with fluid and expands, the rear part can be lifted by the expanded first hollow body, so that the height of the rear part relative to the front part can be increased.

[0009] The technical solution of the present application is to provide a first hollow body at the rear part of the seat cushion foam of the seat cushion assembly, so that the seat cushion can be lifted independently of the front part by the expansion of the first hollow body, so that when in the large bed mode, the rear end of the seat cushion can be lifted to a position with a smaller height difference at the connection with the backrest, thereby improving the comfort of the large bed mode.

[0010] In one or more embodiments of the seat cushion assembly, the first hollow body includes at least two first sub-hollow bodies.

[0011] In one or more embodiments of the seat cushion assembly described above, the rear portion includes a front end adjacent to the front portion and a rear end opposite thereto. In the height direction, the at least two first sub-hollow bodies include a first front sub-hollow body adjacent to the front end and a first rear sub-hollow body adjacent to the rear end. The height to which the first front sub-hollow body can be inflated by filling with fluid is lower than the height to which the first rear sub-hollow body can be inflated by filling with fluid.

[0012] In one or more embodiments of the seat cushion assembly described above, the front portion of the seat cushion foam is a fixed member, and the rear portion is a movable member. The rear portion can rotate about an axis, and in the length direction, the axis is located between the front portion and the rear portion.

[0013] In one or more embodiments of the seat cushion assembly described above, a thinning portion is provided on the back surface of the seat cushion foam. The thinning portion provides the axis, and the rear portion can rotate about the axis provided by the thinning portion, so that the height of the rear portion relative to the front portion can be lifted.

[0014] In one or more embodiments of the seat cushion assembly described above, the thinning portion alone provides the axis and is not supported by a shaft member.

[0015] In one or more embodiments of the seat cushion assembly described above, in the width direction, the seat cushion foam includes a middle portion, and a first side portion and a second side portion on both sides of the middle portion. The front portion and the rear portion are located in the middle portion. The first side portion, the second side portion, and the front portion are fixed members, and the rear portion is a movable member. The first side portion, the second side portion, and the middle portion are separated by a cutting line.

[0016] In one or more embodiments of the seat cushion assembly described above, a fixed foam member is further included. In the length direction, the fixed foam member is on the rear side of the rear portion of the seat cushion foam. The fixed foam member is configured to provide an arc-shaped contact surface with the lower end of the covering member of the backrest and has a first interference connection section. The fixed foam member and the rear portion are configured to have a second interference connection section. The sizes of the first interference connection section and the second interference connection section are 5 mm - 10 mm.

[0017] In one or more embodiments of the seat cushion assembly described above, at least a part of the front surface of the seat cushion foam is provided with a second hollow body, and the second hollow body is connected to the same fluid pump as the first hollow body.

[0018] A seat according to a second aspect of the present application includes a seat cushion including the seat cushion assembly as described in the first aspect; and a backrest including a backrest frame, and the backrest frame is rotatably connected to the seat cushion frame.

[0019] In the above technical solution of the seat, since the seat cushion assembly introduced in the first aspect is adopted, good comfort can be achieved.

[0020] A system according to the third aspect of the present application includes a plurality of adjacent seats described in the second aspect. The seat further includes a leg rest, and the leg rest is arranged at the front end of the seat cushion in the length direction. The system has a seat mode, and at least one of a single-row large bed mode or a multi-row large bed mode: in the seat mode, the posture of the seat is a sitting posture; in the single-row large bed mode, the posture of a single seat is a lying posture, and the backrest of the seat in the lying posture, the seat cushion of the seat itself, and the leg rest provide the bed surface of the large bed mode; wherein, in the single-row large bed mode, the first hollow body of the seat in the lying posture is filled with fluid and expands, so that the corresponding rear part is lifted relative to the front part; in the multi-row large bed mode, at least one of the adjacent plurality of seats has a lying posture; the backrest of the seat in the lying posture, the seat cushion of the seat itself, and the seat cushions of the adjacent seats provide the bed surface of the large bed mode; wherein, in the multi-row large bed mode, the first hollow body in the lying posture and / or the first hollow body of the seat in the sitting posture is filled with fluid and expands, so that the corresponding rear part is lifted relative to the front part.

[0021] In the above technical solution of the system, since the seat described in the second aspect is adopted, good comfort can be achieved. Description of the Drawings

[0022] The above-mentioned and other features, properties and advantages of the present invention will become more obvious through the following description in conjunction with the drawings and embodiments. The same reference numerals in the drawings always represent the same features. It should be noted that these drawings are only examples and are not drawn under the condition of equal proportions, and should not be used to limit the actual protection scope required by the present invention, where:

[0023] Figure 1 It is a schematic structural diagram of the system in the seat mode in an embodiment.

[0024] Figure 2A 、 Figure 2B It is a schematic structural diagram of the system in the multi-row large bed mode and the single-row large bed mode in an embodiment.

[0025] Figure 3 It is a schematic structural diagram of a seat in an embodiment.

[0026] Figures 4A to 4C It is a schematic structural diagram of a seat cushion assembly in an embodiment.

[0027] Figures 5A to 5C It is a schematic structural diagram of the seat cushion assembly installed inside the seat in an embodiment.

[0028] Figures 6A to 6D Schematic diagram of the structure for supporting the first hollow body in some embodiments.

[0029] Figure 7 Schematic diagram of the structure of the hollow body and the air pump in an embodiment.

[0030] Figures 8A to 8C Schematic diagram of the partial structure of a seat in an embodiment.

[0031] Figure 9 Schematic diagram of the structure of a comparative system in the large bed mode.

[0032] Reference numerals:

[0033] 1000 - System

[0034] 100 - Seat

[0035] 1001 - Sitting posture

[0036] 1002 - Lying posture

[0037] 1003 - Bed surface

[0038] 101 - Cushion

[0039] 102 - Backrest

[0040] 1021 - Backrest frame

[0041] 1023 - Backrest covering

[0042] 10231 - Arc-shaped contact surface

[0043] 103 - Leg rest

[0044] 10 - Cushion assembly

[0045] 1 - First hollow body

[0046] 1a - First front sub-hollow body

[0047] 1b - First rear sub-hollow body

[0048] 11 - Support plate

[0049] 12 - Pipeline

[0050] 2 - Cushion frame

[0051] 21 - Cushion space

[0052] 22 - Sitting pan

[0053] 23 - Suspension

[0054] 3 - Cushion foam

[0055] 31 - Front part

[0056] 32 - Rear part

[0057] 321 - Front end

[0058] 322 - Rear end

[0059] 33 - Axis

[0060] 331 - Shaft part

[0061] 34 - Back surface

[0062] 341 - Thinning part

[0063] 3410 - V - shaped groove

[0064] 35 - Middle part

[0065] 36 - First side part

[0066] 37 - Second side part

[0067] 38 - Cutting line

[0068] 4 - Second hollow body

[0069] 5 - Fluid pump

[0070] 6 - Fixed foaming part

[0071] 61 - First interference connection section

[0072] 62 - Second interference connection section

[0073] 63 - Third interference connection section

[0074] 2000 - User

[0075] 2001 - Knee

[0076] 2002 - Head

[0077] 2003 - Waist

[0078] 2004 - Hip. Detailed implementation manners

[0079] Reference will now be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and described as follows. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to those exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalents and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0080] In the following description, the orientation or positional relationship indicated by "front", "rear" or other orientation terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0081] Meanwhile, specific terms are used in this application to describe the embodiments of this application. For example, "one embodiment" and / or "an embodiment" mean a certain feature, structure or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this application can be appropriately combined.

[0082] Although the seat cushion assembly disclosed in the embodiments of this application is exemplified by the system and seat applicable thereto, and the seat applicable to a vehicle, in order to achieve the effect of improving comfort, especially the comfort in the big bed mode, it is not limited thereto. For example, it can be applicable to the application occasions of other means of transportation, such as trains, ships, airplanes, and can also be applicable to fixed places, such as meeting halls, auditoriums, cinemas, massage chairs, etc., as long as it is a seat, especially multiple adjacent seats, and the seat cushion assembly disclosed in the embodiments of this application can be applied.

[0083] Reference Figure 1 and Figure 2A 、 Figure 2B As shown in, taking a vehicle as an example, the system 1000 may include multiple adjacent seats 100, such as the front row and rear row seats of a vehicle. As Figure 3 shown in, the seat 100 may include a seat cushion 101 and a backrest 102, and the backrest 102 and the seat cushion 101 can rotate relative to the seat cushion 101, for example Figure 1 and Figure 2A 、 Figure 2B shown in, so that the posture of the seat 100 can be switched between the sitting posture 1001 and the lying posture 1002.

[0084] As Figures 5A to 5C shown in, for the specific connection structure between the backrest 102 and the seat cushion 101, the backrest 102 may include a backrest frame 1021, and the backrest frame 1021 is rotatably connected to the seat cushion frame 2, for example, the adjustment can be achieved through a recliner. The meaning of "recliner" is similar to the usual structure in the art. The recliner driven by a motor is generally a stepless adjustment recliner. For the need of quick folding, a high-speed motor should be configured, but the recliner can also be a manually adjustable stepped adjustment recliner, and all are not limited thereto. As Figure 3As shown, in some embodiments, the seat 100 may further include a leg rest 103. The leg rest 103 is disposed at the front end of the seat cushion 101 in the length direction. After the seat cushion 101 is located at the predetermined position in the large bed mode of the seat, the leg rest 103 can also be extended to provide support for the user's legs, further improving the comfort level.

[0085] Continuing to refer to Figure 1 and Figure 2A 、 Figure 2B As shown, the system 1000 may have Figure 1 the seat mode shown, or Figure 2A 、 Figure 2B the large bed mode shown.

[0086] In Figure 1 the seat mode shown, the postures of multiple adjacent seats 100 are sitting postures 1001. The sitting posture 1001 here corresponds to the posture of the user sitting down. As Figure 1 shown, based on the ergonomic principle, at this time, the rear end of the seat cushion 101 of the seat is generally lower than the front end in the height direction.

[0087] In Figure 2A 、 Figure 2B the large bed mode shown, where Figure 2A the multi-row large bed mode is shown, and the posture of at least one of multiple adjacent seats 100 is a lying posture 1002; the backrest 102 of the seat in the lying posture 1002, together with the seat cushion 101 of its own seat and the seat cushions 101 of adjacent seats, provides the bed surface 1003 of the large bed mode. The lying posture 1002 here corresponds to the posture of the user lying down. As Figure 2A shown, in the large bed mode, the rear end of the seat cushion 101 of the seat in the lying posture 1002, and / or the rear end of the seat cushion 101 of its adjacent seat, regardless of whether the adjacent seat is in Figure 2A the sitting posture 1001 shown, or is also in the lying posture 1002, the rear end of the seat cushion 101 is lifted in the height direction. The specific lifting method will be introduced in detail below. Briefly speaking, it is by filling the first hollow body 1 with fluid to expand, so that the rear part 32 of the seat cushion foam 3 is lifted by the expanded first hollow body 1, making the rear part 32 lifted relative to the front part 31 of the seat cushion foam 3. In the seat mode, the first hollow body 1 of the seat is not filled with fluid or the filled fluid is not enough to lift the rear part 32. In the large bed mode, the rear end of the seat cushion 101 of the seat in the lying posture 1002, and / or the rear end of the seat cushion 101 of its adjacent seat being lifted can enable better support for the knees 2001 and / or the head 2002 of the corresponding user 2000.

[0088] It can be understood that Figure 1 、 Figure 2AThe content shown in the figure is adjacent rows of seats. For the convenience of the system, there are only two rows of seats. For example, there can also be three rows or more rows to form a large bed mode. In addition, the seats that form the large bed mode are generally the front and rear row seats, but this is not a limitation. For example, it can also be adjacent seats in the same row. Generally, the direction of the seats needs to be rotated so that the backrests of the seats in the same row are opposite to each other, so that after the backrests are put down, they can provide the bed surface of the large bed mode together with the adjacent seat cushions.

[0089] Reference Figure 2B As shown, the large bed mode can also be a single-row large bed mode, that is, a single seat 100 can also provide the large bed mode of the system 1000.

[0090] In the single-row large bed mode, the posture of the single seat 100 is the lying posture 1002. The backrest 102 of the seat 100 in the lying posture 1002, the seat cushion 101 of the seat 100 itself, and the leg rest 103 provide the bed surface 1003 of the large bed mode; similarly, in the single-row large bed mode, the first hollow body 1 of the seat 100 in the lying posture 1002 fills with fluid and expands, so that the corresponding rear part 32 is lifted relative to the front part 31, so that the waist 2003 and hip 2004 of the corresponding user are better supported.

[0091] Reference Figures 4A to 4C , and Figures 5A to 5C As shown, in some embodiments, the seat cushion assembly 10 is disposed on the seat cushion 101 of the seat 100. The seat cushion assembly 10 includes a first hollow body 1, a seat cushion frame 2, and a seat cushion foam 3.

[0092] The first hollow body 1 can be filled with fluid and expand. The specific form of the first hollow body 1 can be the inflatable airbag shown in the figure, that is, the fluid filled is air. When the first hollow body 1 (that is, the airbag here) needs to expand, the air pump conveys air to the airbag. It can be understood that the fluid filled in the hollow body can also be other forms. For example, it can also be liquid, that is, the hollow body fills with liquid and expands. At this time, the device for pumping the fluid is a liquid pump. The specific structure can be Figure 7 As shown, the first hollow body 1 is an airbag. When not inflated, the airbag is the flat structure shown in the figure and is supported by the support plate 11 and is connected to the fluid pump 5 through the pipeline 12. The position of the fluid pump 5 can be Figures 5A to 5C As shown, it is located on the backrest 102, that is, the backrest 102 of the seat 100 is provided with a fluid pump 5, and the fluid pump 5 is connected to the first hollow body 1 to provide the fluid for expanding the first hollow body. Or it can also be as Figures 4A to 4C As shown, the fluid pump 5 is disposed on the seat cushion 101, and actually can be adjusted according to factors such as the vibration of the seat and the layout space.

[0093] The specific structure of the first hollow body 1 can be a large integral hollow body or composed of multiple small hollow bodies. In some embodiments, the first hollow body 1 may include at least two first sub-hollow bodies, which makes it easy to control the different heights at which different parts of the seat cushion foam 3 are lifted by the first hollow body. In some embodiments, specifically, the rear portion 32 includes a front end 321 adjacent to the front portion 31 and a rear end 322 opposite thereto. In the height direction, at least two first sub-hollow bodies include a first front sub-hollow body 1a adjacent to the front end 321 and a first rear sub-hollow body 1b adjacent to the rear end 322. The height to which the first front sub-hollow body 1a can expand by filling with fluid is lower than the height to which the first rear sub-hollow body 1b can expand by filling with fluid.

[0094] The seat cushion frame 2 defines a seat cushion space 21, and the first hollow body 1 is located in this seat cushion space 21. The meaning of the seat cushion frame 2 here is broad, that is, a frame structure for fixing the first hollow body 1 and the seat cushion foam 3. For example, reference can be made to Figure 5A and Figure 5C As shown, the structure for supporting the first hollow body 1 in the seat cushion space 21 of the seat cushion frame 2 can be a seat pan 22 (cushion pan), and / or a suspension member 23 (suspension, also known as a suspension spring), or other support structures. In the figure, the first hollow body 1 is supported by the suspension member 23. The form of the seat pan 22 can be a semi-pan as shown in Figure 6A or Figure 6C a full pan as shown, and it can be made of metal material, plastic, etc., and is not limited thereto. The form of the suspension member 23 can also be a plate suspension as shown in Figure 6A or Figure 6B a full suspension as shown. It can be understood that the support structure can be Figure 6D other support structures as shown.

[0095] As Figures 4A to 4C shown, the seat cushion foam 3 includes a front portion 31 and a rear portion 32 in the length direction respectively.

[0096] Here, the seat cushion foam 3 should be interpreted in a broad sense, that is, it not only includes the soft pad formed by the foaming process in the narrow sense, but also includes soft pads formed by other processes. Since it is generally formed by the foaming process, it is generally called seat cushion foam. Common foamed soft pads can be, for example, PU foamed soft pads, that is, formed by polyurethane foaming materials, but are not limited thereto. For example, it can also be EVA one-shot injection foaming, TPU foaming, etc.

[0097] Continue to refer to Figures 4A to 4CAs shown, in the height direction, the rear part 32 is adjacent to the first hollow body 1. When the first hollow body 1 is filled with fluid and expands, the rear part 32 can be lifted by the expanded first hollow body 1, so that the height of the rear part 32 relative to the front part 31 can be raised.

[0098] Such beneficial effects include, but are not limited to, by arranging the first hollow body at the rear part of the seat cushion foam of the seat cushion assembly, the seat cushion foam can be lifted independently of the front part through the expansion of the first hollow body, so that when in the large bed mode, the rear end of the seat cushion can be lifted to a position with a smaller height difference from the connection part with the backrest, thereby improving the comfort of the large bed mode.

[0099] Continue to refer to Figures 4A to 4C As shown, the front part 31 of the seat cushion foam 3 is a fixed part, and the rear part 32 is a movable part. The rear part 32 can rotate around an axis 33. In the length direction, the axis 33 is located between the front part 31 and the rear part 32. The beneficial effect of this is that the rotation of the front part 31 caused by the rotation of the rear part 32 can be minimized. Specifically, if the front part 31 rotates correspondingly when the rear part 32 is lifted, the rotation of the front part 31 will cause interference with other components arranged at the front end of the front part 31, such as the leg rest 103, thus affecting the extension of the leg rest.

[0100] Continue to refer to Figures 4A to 4C As shown, the specific structure forming the axis 33 can be that a thinning part 341 is provided on the back surface 34 of the seat cushion foam. The thinning part 341 provides the axis 33, and the rear part 32 can rotate around the axis 33 provided by the thinning part 341, so that the height of the rear part 32 relative to the front part 31 can be lifted. The meaning of the thinning part 341, as the name implies, is that its thickness is hollowed out relative to the adjacent area and is thus thinner. For example, as shown in the figure, a V-shaped groove 3410 is provided on the back surface 34 of the seat cushion foam, and the straight line where the bottom of the V-shaped groove 3410 is located provides the above-mentioned axis 33, that is, the rear part 32 will rotate around the straight line where the bottom of the groove is located. It can be understood that the thinning part can also be other structures, not limited to the V-shaped groove, such as an arc-shaped groove, a square groove, etc. The beneficial effect of arranging the thinning part, especially the V-shaped groove thinning part, is that the thinning part 341 alone can provide the axis 33 without being supported by the shaft member 331, that is, by arranging the thinning part 341, the rotation of the rear part 32 around the front part 31 can be realized to achieve the lift, without the need to arrange the shaft member 331 to realize the rotation of the rear part 32 around the front part 31. This further simplifies the structure of the seat cushion assembly and the seat, reduces costs and further lightens the weight.

[0101] Continue to refer to Figures 4A to 4C, in some embodiments, in the width direction, the seat cushion foam 3 includes a middle portion 35, and a first side portion 36 and a second side portion 37 on both sides of the middle portion 35. The front portion 31 and the rear portion 32 are located in the middle portion 35. The first side portion 36, the second side portion 37 and the middle portion 35 are separated by a cutting line 38. The first side portion 36, the second side portion 37 and the front portion 31 are fixed parts, and the rear portion 32 is a movable part. The beneficial effect of this is that for the entire seat cushion foam 3, only the rear portion 32 of the middle portion 35 needs to be adjusted in height, and there is no need to adjust the areas of the first side portion 36 and the second side portion 37.

[0102] Reference Figures 8A to 8C As shown, in some embodiments, the seat cushion assembly 10 may further include a fixed foam member 6. In the length direction, the fixed foam member 6 is on the rear side of the rear portion 32 of the seat cushion foam 3; the fixed foam member 6 is configured to provide an arc-shaped contact surface 10231 with the lower end of the backrest covering member 1023 of the backrest 102 and has a first interference connection section 61. The fixed foam member 6 and the rear portion 32 are configured to have a second interference connection section 62; cut after foaming. The sizes of the first interference connection section 61 and the second interference connection section 62 are 5 mm - 10 mm. The meaning of the "interference connection section" here borrows the meaning of interference fit in shaft-hole connection, that is, as Figure 5A , Figure 5B As shown, in the seat mode of the seat, that is, in the normal sitting mode, the arc-shaped contact surface 10231 and the fixed foam member 6, and between the rear portion 32 and the fixed foam member 6, the size contour lines are coincident, that is, there are overlapping and squeezing parts between them. The meanings of the covering member and the foam, and the foam member are similar, that is, they are all structures with foam and a skin covering on the surface. The beneficial effect of this is that the structure of the fixed foam member and the interference connection section is set, so as to avoid the problem of leakage between the seat cushion and the backrest in the big bed mode. Specifically, referring to Figures 8A to 8C As shown, in the seat mode, Figure 8A As shown, that is, in the conventional sitting use mode of the seat, the arc-shaped contact surface 10231 and the fixed foam member 6 are configured to have a first interference connection section 61, and the fixed foam member 6 and the rear portion 32 are configured to have a second interference connection section 62 and are relatively stationary. In the process of adjusting from the seat mode to the big bed mode, that is, in the process of the seat 100 adjusting from the sitting position 1001 to the lying position 1002, as Figures 8B to 8C As shown, after the backrest 102 tilts backward to a specific angle, Figure 8C As shown, the first hollow body 1 is filled with fluid and expands, so that the corresponding rear portion 32 is lifted relative to the front portion 31. In this process, after the rear portion 32 is longitudinally offset from the fixed foam member 6 on its rear side, it is interference-connected with the arc-shaped contact surface 10231 of the backrest, that is, the two are connected with overlapping and squeezing, forming a third interference connection section 63, ensuring that there is no leakage between the seat cushion and the backrest in the big bed mode.

[0103] Continue to refer to Figures 4A to 4C , in some embodiments, at least a part of the surface of the front side of the seat cushion foam is provided with a second hollow body 4, so that an additional massage function can be provided to the user 2000. In addition, the second hollow body 4 and the first hollow body 1 can be connected to the same fluid pump 5, so that the structure of the seat cushion is further compact. As introduced above, the fluid pump 5 can be provided on the seat cushion 101, or can also be provided on the backrest 102.

[0104] In summary, the beneficial effects of the seat cushion assembly, seat and system introduced in the above embodiments include, but are not limited to, that by providing the first hollow body at the rear part of the seat cushion foam of the seat cushion assembly, the seat cushion foam can be lifted independently of the front part through the expansion of the first hollow body, so that the rear end of the seat cushion can be lifted to a position with a smaller height difference from the connection with the backrest in the large bed mode, thereby improving the comfort of the large bed mode.

[0105] Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A seat cushion assembly (10), characterized in that: include: A first hollow body (1) capable of being filled with a fluid to expand; A cushion frame (2) defines a cushion space (21), wherein the first hollow body (1) is located in the cushion space (21); The seat cushion foam (3) comprises a front portion (31) and a rear portion (32) respectively located in the length direction; Wherein, in the height direction, the rear part (32) is adjacent to the first hollow body (1), and when the first hollow body (1) is filled with fluid and expands, the rear part (32) can be lifted up by the expanded first hollow body (1), so that the height of the rear part (32) relative to the front part (31) can be raised.

2. The seat cushion assembly (10) according to claim 1, characterized in that: The first hollow body (1) comprises at least two first sub-hollow bodies.

3. The seat cushion assembly (10) according to claim 2, characterized in that: The rear portion (32) includes a front end (321) close to the front portion (31) and a rear end (322) opposite thereto. In the height direction, the at least two first sub-hollow bodies include a first front sub-hollow body (1a) adjacent to the front end (321) and a first rear sub-hollow body (1b) adjacent to the rear end (322). The height to which the first front sub-hollow body (1a) can expand when filled with fluid is lower than the height to which the first rear sub-hollow body (1b) can expand when filled with fluid.

4. The seat cushion assembly (10) according to claim 1, characterized in that: The front part (31) of the seat cushion foam (3) is a fixed part, and the rear part (32) is a movable part. The rear part (32) can rotate around an axis (33). In the length direction, the axis (33) is located between the front part (31) and the rear part (32).

5. The seat cushion assembly (10) according to claim 4, characterized in that: The back side (34) of the foamed seat cushion is provided with a thinning portion (341), and the thinning portion (341) provides the axis (33). The rear portion (32) can rotate around the axis (33) provided by the thinning portion (341), so that the height of the rear portion (32) relative to the front portion (31) can be raised.

6. The seat cushion assembly (10) according to claim 5, characterized in that: The thinned portion (341) only provides the axis (33) by itself and is not supported by the shaft member (331).

7. The seat cushion assembly (10) according to claim 1, characterized in that: In the width direction, the seat cushion foam (3) includes a middle part (35), and a first side part (36) and a second side part (37) on both sides of the middle part (35); the front part (31) and the rear part (32) are located in the middle part (35); the first side part (36), the second side part (37) and the middle part (35) are separated by a cutting line (38); the first side part (36), the second side part (37) and the front part (31) are fixed parts, and the rear part (32) is a movable part.

8. The seat cushion assembly (10) according to claim 1, characterized in that: The invention also comprises a fixed foaming part (6), wherein in the length direction, the fixed foaming part (6) is on the rear side of the rear part (32) of the seat cushion foam (3); the fixed foaming part (6) is configured to provide an arc-shaped contact surface (10231) with the lower end of the backrest cover (1023) of the backrest (102) and has a first interference connection section (61); the fixed foaming part (6) and the rear part (32) are configured to have a second interference connection section (62); the size of the first interference connection section (61) and the second interference connection section (62) is 5 mm-10 mm.

9. The seat cushion assembly (10) according to claim 1, characterized in that: At least part of the surface of the front side of the foamed seat cushion is provided with a second hollow body (4), and the second hollow body (4) is connected to the same fluid pump (5) as the first hollow body (1).

10. A seat (100), characterized in that: include: A seat cushion (101), comprising a seat cushion assembly (10) according to any one of claims 1 to 6; as well as A backrest (102), wherein the backrest (102) and the seat cushion (101) are capable of rotating relative to each other around the seat cushion (101).

11. A system (1000), characterized in that: The system (1000) comprises a plurality of adjacent seats (100) as claimed in claim 10, wherein the seat (100) further comprises a leg rest (103), wherein the leg rest (103) is arranged at the front end of the seat cushion (101) in the length direction, and the system (1000) has a seat mode, and at least one of a single-row queen bed mode or a multi-row queen bed mode: In the seat mode, the posture of the seat (100) is a sitting posture (1001); In the single-row large bed mode, the posture of a single seat (100) is a lying position (1002), and the backrest (102) of the seat (100) in the lying position (1002), the seat cushion (101) of the seat (100) in which the seat is located, and the leg rest (103) provide a bed surface (1003) in the large bed mode; Wherein, in the single-row large bed mode, the first hollow body (1) of the seat (100) in the lying position (1002) is filled with fluid and expanded, so that the corresponding rear portion (32) is lifted relative to the front portion (31); In the multi-row large bed mode, at least one of the plurality of adjacent seats (100) is in a lying position (1002); the backrest (102) of the seat in the lying position (1002) and the seat cushion (101) of the seat in which the seat is located, as well as the seat cushion (101) of the adjacent seat, provide a bed surface (1003) in the large bed mode; In the multi-row large bed mode, the first hollow body (1) in a lying position (1002) and / or the first hollow body (1) of a seat in a sitting position (1001) are filled with fluid and expanded, so that the corresponding rear part (32) is lifted relative to the front part (31).

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