Seat comprising additional layer

Abstract

A seat comprising an additional layer, comprising a foam body (2) and a body cover (3) that at least partially covers the foam body (2). The additional layer (4) comprises an additional layer cover (41) and a filler (42). The additional layer cover (41) and the body cover (3) are connected to define at least one cavity (43). The filler (42) is placed in at least one cavity (43) among all cavities (43). Such a configuration can increase the layered structure of the seat and improve the comfort of the seat. Moreover, the additional layer can be deformed more adaptively on the basis of different magnitudes of pressure against different areas, thereby better fitting a human body, offering a stronger wrapping sensation, and providing a user with better sitting experience.

Description

A type of stacked seat

[0001] This disclosure is based on and claims priority to the following applications: CN application number 202422072472.X, filed on August 26, 2024; CN application number 202411453250.0, filed on October 17, 2024; CN application number 202422514835.0, filed on October 17, 2024; CN application number 202422649034.5, filed on October 31, 2024; and CN application number 202411540554.0, filed on October 31, 2024. The disclosure of these CN applications is incorporated herein by reference in its entirety. Technical Field

[0002] This disclosure relates to the field of seating technology, and more particularly to a seat with stacked layers. Background Technology

[0003] In the automotive industry, seats are key components that provide comfort for drivers and passengers. With technological advancements, the comfort, safety, and functionality of seats have gradually gained importance.

[0004] In some related technologies, the seat is constructed by incorporating flexible materials such as foam or sponge into the seat frame, and then covering the flexible material with a body cover, which is fixedly connected to the seat frame. While flexible materials can provide a certain degree of comfort when sitting in the seat, to ensure the seat's appearance and safety, the flexible materials still have a noticeable hard feel, resulting in insufficient comfort. Summary of the Invention

[0005] This disclosure provides a layered seat, including a foam body and a body cover that at least partially covers the foam body. The layer includes a layered cover and a filler. The layered cover and the body cover are connected to form at least one cavity, and the filler is placed in at least one of the cavities.

[0006] In some embodiments, the stacked sleeve includes a surface sleeve and a side sleeve independent of the surface sleeve, wherein at least one edge of the surface sleeve is connected to the body sleeve through the side sleeve.

[0007] In some embodiments, the upper end of the side sleeve is fixedly connected to the surface sleeve, and the lower end of the side sleeve is fixedly connected to or detachably connected to the main body sleeve.

[0008] In some embodiments, the stacked cover further includes a back cover connected to the side cover and the body cover, the back cover being disposed in the area where the stacked cover and the body cover overlap.

[0009] In some embodiments, one side of the back cover is connected to the side cover, and the other side of the back cover extends into the area where the surface cover overlaps with the body cover and is connected to the body cover.

[0010] In some embodiments, at least a portion of the back cover is disposed opposite to the front cover.

[0011] In some embodiments, the stack further includes a support piece, which is at least partially disposed in the area where the back cover and the front cover are disposed opposite each other.

[0012] In some embodiments, the upper end of the side sleeve is connected to the surface sleeve, and the lower end of the side sleeve extends downward and toward the area where the surface sleeve and the body sleeve overlap, so as to connect with the body sleeve.

[0013] In some embodiments, at least a portion of the side faceplate is disposed opposite to the surface faceplate.

[0014] In some embodiments, the stack further includes a support piece, which is at least partially disposed in the area where the side sleeve and the surface sleeve are disposed opposite each other.

[0015] In some embodiments, the stack further includes a support strip, the side of the surface cover is bent to form a folded edge, the folded edge is connected to the side cover, and the support strip is at least partially accommodated inside the folded edge.

[0016] In some embodiments, the overlapping surface sleeve and the main body sleeve are connected by a fastening member to form a plurality of cavities.

[0017] In some embodiments, the surface sleeve and the body sleeve are connected by a lifting member, and the surface sleeve, the side sleeve, the lifting member and the body sleeve are connected to form a plurality of cavities.

[0018] In some embodiments, both the surface cover and the body cover include multiple pieces of material, and two adjacent pieces of material of the surface cover are fixedly connected to two adjacent pieces of material of the body cover by the fastening member.

[0019] In some embodiments, the filler is connected to at least one of the surface sleeve, the side sleeve, the clamping member, and the body sleeve to prevent the filler from shifting within the cavity.

[0020] In some embodiments, the filler is fixedly connected to the laminated cover, and a gap is left between the filler and the body cover.

[0021] In some embodiments, the surface cover, the side cover, and the body cover are connected to form a cavity, the filler is fixedly connected to the surface cover, and a gap is left between the filler and the body cover.

[0022] In some embodiments, the filler is fixedly connected to the surface with quilted stitches in parallel straight lines or decorative patterns.

[0023] In some embodiments, a triangular gap is formed between the filler and the body cover at a position corresponding to the quilting line.

[0024] In some embodiments, the filler is a layered structure formed of flocculent material, and the quilting thread passes through the filler and is fixed to the surface cover.

[0025] In some embodiments, the filler is a flocculent material with relatively independent particles, the filler is wrapped with a filler cover, and the quilting thread passes through the filler and the filler cover and is fixedly connected to the surface cover.

[0026] In some embodiments, the gaps between adjacent individual particles within the filler cover and the diameter of the individual particles allow for relative movement and deformation.

[0027] In some embodiments, the laminated cover is detachably connected to the main body cover. In some embodiments, a heating pad base fabric is also provided beneath the laminated cover.

[0028] In some embodiments, the heating pad base fabric is disposed between the body cover and the foamed body, and together with the body cover, is connected to the laminated cover and the body cover located outside the laminated coverage area.

[0029] In some embodiments, the heating pad base fabric is sewn onto the back of the body cover, or pasted onto the front of the foamed body, or replaces the body cover located in the laminated coverage area, and is connected to the laminated cover and the body cover located outside the laminated coverage area, respectively.

[0030] In some embodiments, the stack includes at least one of a backrest stack, a seat cushion stack, a leg rest stack, and a headrest stack.

[0031] Based on the above technical solution, this disclosure has at least the following beneficial effects:

[0032] In some embodiments, additional layers are provided on the seat, and the cavity formed between the layered cover and the main cover is used to accommodate the filling material. This ensures both the original functional and safety requirements of the seat and improves the comfort of the seat by adjusting the softness of the filling material.

[0033] In some embodiments, at least one edge of the stacked surface cover is connected to the main body cover via a separate side cover, creating a more upright and floating effect.

[0034] In some embodiments, the middle area of ​​the surface cover is connected to the main body cover by a non-woven fabric suspension member, which can ensure the tightness of the main body cover while also taking into account the looseness of the layered cover.

[0035] In some embodiments, by fixing the filler to the overlay cover and leaving a gap between it and the main cover, more deformation space is provided for the filler, allowing the filler to produce a more adaptive amount of deformation based on the different pressures applied to different areas, so as to better fit the human body and make the wrapping feel stronger. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0037] Figure 1 is an axonometric perspective view of a stacked seat provided in some embodiments of this disclosure.

[0038] Figure 2 is a side view of a stacked seat provided in some embodiments of this disclosure.

[0039] Figure 3 is a schematic diagram of the structure of the seat cushion and seat cushion stack provided in Embodiment 1 of this disclosure.

[0040] Figure 4(a) is an enlarged perspective view of the structure of the stacked edge in some embodiments of this disclosure, showing that the surface sleeve is fixedly connected to the body sleeve through the side sleeve.

[0041] Figure 4(b) is an enlarged perspective view of the structure of the stacked edge in some embodiments of this disclosure, showing that the surface cover is detachably connected to the body cover through the side cover.

[0042] Figure 4(c) is an enlarged perspective view of the structure of the stacked edge in some embodiments of this disclosure, showing the connection structure of the back cover.

[0043] Figure 4(d) is an enlarged perspective view of the structure of the stacked edge in some embodiments of this disclosure, showing the connection structure of the back cover, as well as the arrangement of the support piece and support strip.

[0044] Figure 4(e) is an enlarged perspective view of the structure of the stacked edge in some embodiments of this disclosure, showing the connection between the surface sleeve and the body sleeve through the side sleeve, as well as the arrangement of the support piece and support strip.

[0045] Figure 4(f) is an enlarged perspective view of section D of the stacked layers in Figure 3.

[0046] Figure 5(a) is a schematic diagram of the visual effect of the stacked layers extending outward in some embodiments of this disclosure.

[0047] Figure 5(b) is a schematic diagram of the visual effect of the stacked layers receding inward in some embodiments of this disclosure.

[0048] Figure 6(a) is a schematic diagram of the structure of the cushion and cushion stack of Embodiment 2 of this disclosure.

[0049] Figure 6(b) is a schematic diagram of the structure of the cushion and cushion stack of Embodiment 2 of this disclosure.

[0050] Figure 7 is an enlarged perspective view of section E of the stacked layers in Figure 6(a).

[0051] Figure 8(a) is a schematic diagram of one form of the filler in some embodiments of this disclosure.

[0052] Figure 8(b) is a schematic diagram of another form of filler in some embodiments of this disclosure.

[0053] Figure 9 is a schematic diagram of the usage state of the seat cushion layer in some embodiments of this disclosure.

[0054] Legend: 1. Seat frame; 2. Foam body; 3. Body cover; 4. Layers; 4a. Backrest layer; 4b. Seat cushion layer; 4c. Leg rest layer; 41. Layered cover; 411. Surface cover; 4111. Folded edge; 412. Side cover; 413. Back cover; 42. Filler; 421. Filler cover; 42a. Layered structure; 42b. Granular structure; 43. Cavity; 44. Suspension element; 45. Support piece; 46. Support strip; 51. First seam; 52. Second seam; 53. Third seam; 54. Fourth seam; 55. Fifth seam; 56. Sixth seam; 57. Quilted seam; 6. Heating pad base fabric. Detailed Implementation

[0055] The technical solutions in the embodiments of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0056] In the description of this disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0057] In some related technologies, the seat is constructed by incorporating flexible materials such as foam or sponge into the seat frame, and then covering the flexible material with a body cover, which is fixedly connected to the seat frame. While flexible materials can improve the comfort of sitting in a seat to some extent, the hardness of the flexible material is limited due to the need to balance the flatness of the seat's appearance and structural support. This often results in a noticeably hard feel, making the seat less comfortable.

[0058] Based on this, the present disclosure provides a seat with a layered structure. By setting additional layers on the main body cover of the seat, the layered structure of the seat is increased to improve the comfort of the seat. Moreover, the layer can produce a more adaptive amount of deformation based on the different pressures applied to different areas, thereby better conforming to the human body, providing a stronger sense of envelopment, and providing a better riding experience for the user.

[0059] Referring to Figures 1 and 2, this disclosure provides a layered seat, comprising: a seat frame 1, a foam body 2 disposed on the seat frame 1, a body cover 3 (as shown in Figure 3) at least partially covering the foam body 2, and a layer 4 laid on the outer surface of the foam body 2 or the outer surface of the body cover 3. The layer 4 is substantially disposed at a position in contact with a person sitting on the seat.

[0060] The stack 4 includes a backrest stack 4a disposed on the backrest, a seat cushion stack 4b disposed on the seat cushion, and a leg rest stack 4c disposed on the leg rest. Although this embodiment shows stacks 4 disposed on the backrest, seat cushion, and leg rest, it is conceivable that stacks 4 could also be disposed on at least one of the backrest, seat cushion, and leg rest. It is known that backrests and seat cushions are typically divided into a central area and side wing areas located on either side of the central area. The backrest stack 4a of this disclosure can cover a portion of the backrest, for example, only the central area or only the side wing areas; it can also cover the entire backrest. Similarly, the seat cushion stack 4b can cover a portion of the seat cushion, for example, the central area or side wing areas of the seat cushion, or a U-shaped or annular area formed by the side wing areas and part of the central area; it can also cover the entire seat cushion. The leg rest stack 4c can at least partially cover the leg rest. It is conceivable that a headrest stack can also be disposed on the headrest, and the headrest stack can at least partially cover the headrest.

[0061] The backrest layer 4a, seat cushion layer 4b, leg rest layer 4c, and headrest layer have the same structure. Taking the seat cushion layer 4b as an example, as shown in Figure 3, the seat cushion layer 4b covers the central area P and the side wing areas S of the seat cushion. The seat cushion layer 4b includes a layered cover 41 and filling material 42; the layered cover 41 and the main cover 3 are connected to form at least one cavity 43, and at least one of the cavities 43 contains filling material 42. Optionally, each cavity 43 contains filling material 42.

[0062] The overlapping sleeve 41 and the main body sleeve 3 can be detachably or fixedly connected.

[0063] The stacked cover 41 includes a surface cover 411 and a side cover 412 independent of the surface cover 411. When an occupant sits on the seat, the surface cover 411 comes into contact with the person, and at least one edge of the surface cover 411 is connected to the main cover 3 through the side cover 412 to form the edge of the stack 4.

[0064] Regarding the connection of the edges of the stack 4, refer to Figures 4(a) to 4(e). The upper end of the side cover 412 is fixedly connected to the surface cover 411 through the first seam 51. The lower end of the side cover 412 can be connected to the main body cover 3 by either a fixed connection or a detachable connection.

[0065] As shown in Figure 4(a), the fixed connection refers to, for example, the side cover 412 being placed between the area covered by the stacked layer 4 (e.g., its surface cover 411) and the uncovered area of ​​the main body cover 3, and being placed between the two pieces of the main body cover 3, and being fixedly connected to the two pieces of the main body cover 3 by the second seam 52, so that the stacked layer can be firmly fixed to the main body cover 3.

[0066] As shown in Figure 4(b), the detachable connection refers to, for example, the side cover 412 and the main cover 3 being fixedly connected to detachable connecting parts A and B, respectively, for example, by stitching or adhesive. The detachable connecting parts A and B include zipper straps, male and female Velcro fasteners, and male and female snap fasteners. Thus, the layer 4 can be removed from the main cover 3 for replacement or cleaning.

[0067] By setting an independent side cover 412 between the surface cover 411 and the main cover 3, instead of the surface cover 411 extending to the side and connecting with the main cover 3, the stacked layer 4 can form a more upright and floating feeling on the main cover 3.

[0068] In the left-right direction of the vehicle, when the connection position between the side cover 412 and the surface cover 411 (such as the position of the first seam 51) is closer to the inside of the seat cushion than the connection position between the side cover 412 and the main body cover 3 (such as the position of the second seam 52), a layered visual effect with a narrow top and wide bottom, as shown in Figure 5(a), can be achieved, further increasing the upright and floating feeling.

[0069] In the left-right direction of the vehicle, when the connection position between the side cover 412 and the surface cover 411 (such as the position of the first seam 51) is farther away from the inner side of the seat cushion than the connection position between the side cover 412 and the main body cover 3 (such as the position of the second seam 52), another visual effect of overlapping layers that are wider at the top and narrower at the bottom, as shown in Figure 5(b), can be achieved. This allows the second seam 52 to be covered by the surface cover 411, and the connection position cannot be seen when viewed from above, thereby improving the overall integrity and aesthetics of the seat surface.

[0070] As shown in Figure 4(c), the laminated cover 41 may further include a back cover 413 connected to the side cover 412 and the main cover 3. The back cover 413 is disposed in the area where the laminated cover 41 (e.g., its surface cover 411) overlaps with the main cover 3, and is adjacent to the edge of the laminate 4. The area of ​​the back cover 413 is smaller than that of the surface cover 411. The upper end of the back cover 413 is connected to the side cover 412 via a third seam 53, and the lower end of the back cover 413 is fixedly connected to the main cover 3 via a fourth seam 54. By providing the back cover 413, the internal space of the cavity 43 can be further increased, thereby allowing more filler 42 to be filled into the cavity 43, making the laminate 4 more fluffy and comfortable. At the same time, by providing the back cover 413, the laminate 4 has a certain amount of expansion and contraction in the height direction, allowing the laminate 4 and the main cover 3 to achieve a certain degree of folding at the edge of the laminate 4 while ensuring a fixed connection.

[0071] In some embodiments, the connection between the lower end of the back cover 413 and the main cover 3 can be either a fixed connection as shown in Figure 4(c) or a detachable connection similar to that shown in Figure 4(b), i.e., the back cover 413 and the main cover 3 are respectively fixedly connected to detachable connecting parts A and B. Examples include the chain strap of a zipper, the male and female sides of a Velcro closure, and the male and female snaps of a snap fastener. In this way, the layer 4 can be removed from the main cover 3 for replacement or cleaning.

[0072] Referring to Figures 4(c) and 4(d), in some embodiments, one side of the back cover 413 is connected to the side cover 412, and the other side of the back cover 413 extends into the area where the surface cover 411 overlaps with the body cover 3 and is connected to the body cover 3. Specifically, one side of the back cover 413 is connected to the side cover 412 via a third seam 53, and the other side of the back cover 413 is connected to the body cover 3 via a fourth seam 54.

[0073] Because the side cover 412 (facing sideways) extends beyond the connection point between the back cover 413 and the main cover 3, and the back cover 413 extends from the side cover 412 to the area where the surface cover 411 overlaps with the main cover 3, the stack 4 can form an extended cover structure at the edge. This extended cover structure can cover the connection point between the back cover 413 and the main cover 3, improving the overall integrity and aesthetics of the seat appearance. When the extended cover structure is flipped up, the connection area between the back cover 413 and the main cover 3 can be exposed, facilitating the inspection or disassembly of the stack 4.

[0074] The back cover 413 allows for a larger coverage area of ​​the stacked cover. By extending the back cover 413, the stacked cover can be enlarged, making it suitable for some unconventional areas, such as near leg rests, armrests, and other scenarios where the stacking needs to be enlarged.

[0075] At least a portion of the back cover 413 is disposed opposite to the surface cover 411. The back cover 413 and the surface cover 411 are arranged in a vertical or horizontally corresponding manner at the edge region of the stack 4. At least a portion of the filler 42 can be located in the accommodating space between the back cover 413 and the surface cover 411, thereby increasing the volume of the cavity 43 accommodating the filler 42.

[0076] Referring to Figure 4(d), the laminate 4 also includes a support piece 45, which is at least partially disposed in the area where the back cover 413 and the front cover 411 are disposed opposite each other. In some embodiments, most of the support piece 45 is disposed in the area where the back cover 413 and the front cover 411 are disposed opposite each other. Alternatively, the support piece 45 is entirely disposed in the area where the back cover 413 and the front cover 411 are disposed opposite each other. Specifically, the support piece 45 is disposed on the inner side of the back cover 413 and fits snugly against the back cover 413. Further, the support piece 45 can be fixedly connected to the back cover 413 and the main cover 3 by a fourth seam 54. The back cover 413 and the support piece 45 are connected by overlapping stitching, which can effectively unfold and tighten the edge area of ​​the laminate 4, preventing the edge of the laminate from curling up due to pressure or pulling during riding, thereby maintaining the shape stability and overall three-dimensionality of the laminate 4.

[0077] Referring to Figure 4(e), in some embodiments, the back cover 413 may be omitted, and instead, the side cover 412 may be lengthened to form an extended cover structure at the edge of the stack 4. Specifically, the upper end of the side cover 412 is connected to the surface cover 411, and the lower end of the side cover 412 extends downward and into the area where the surface cover 411 overlaps with the body cover 3 to connect with the body cover 3. Further, the upper end of the side cover 412 is connected to the surface cover 411 via a first seam 51, and the lower end of the side cover 412 is connected to the body cover 3 via a second seam 52.

[0078] In the above embodiment, by lengthening the side cover 412, an extension cover structure is formed at the edge of the stack 4. This extension cover structure can cover the connection position between the side cover 412 and the main cover 3, improving the overall integrity and aesthetics of the seat appearance. When the extension cover structure is flipped up, the connection area between the side cover 412 and the main cover 3 can be exposed, facilitating the inspection or disassembly of the stack 4.

[0079] At least a portion of the side sleeve 412 is disposed opposite to the surface sleeve 411. The side sleeve 412 and the surface sleeve 411 are arranged in a vertical or horizontally corresponding manner at the edge region of the stack 4. At least a portion of the filler 42 can be located in the accommodating space between the side sleeve 412 and the surface sleeve 411, thereby increasing the volume of the cavity 43 accommodating the filler 42.

[0080] The layer 4 also includes a support piece 45, which is at least partially disposed in the area where the side cover 412 and the surface cover 411 are opposite each other. In some embodiments, most of the support piece 45 is disposed in the area where the side cover 412 and the surface cover 411 are opposite each other. Alternatively, the support piece 45 is entirely disposed in the area where the side cover 412 and the surface cover 411 are opposite each other. Specifically, the support piece 45 is disposed on the side where the side cover 412 and the surface cover 411 are opposite each other and is fitted to the side cover 412. Further, the support piece 45 can be fixedly connected to the side cover 412 and the main cover 3 by a second seam 52. The side cover 412 and the support piece 45 are connected by overlapping stitching, which can effectively unfold and tighten the edge area of ​​the layer 4, preventing the edge of the layer from curling up due to pressure or pulling during riding, thereby maintaining the shape stability and overall three-dimensionality of the layer 4.

[0081] Referring to Figures 4(d) and 4(e), the support piece 45, as a shaping element, can improve the stiffness and compressive strength of the edge of the stack 4, prevent the edge of the stack from warping during use, enhance the edge stiffness, flatness and structural shaping ability, and resist long-term sitting pressure or external force deformation, so that the stack 4 can still recover its original shape after repeated stress, thus improving the stability of the stack 4 shape.

[0082] The support sheet 45 is typically made of a semi-rigid elastic material (such as PP, PET, etc.), which is lightweight, flexible, and stiff. It can effectively enhance the structural strength and shaping effect of the laminated edges, while maintaining good bendability, without producing a hard feel, thus improving ride comfort. Optionally, the support sheet 45 is a PP sheet.

[0083] Referring to Figures 4(d) and 4(e), in some embodiments, the stack 4 further includes a support strip 46, the side of the surface cover 411 is bent to form a folded edge 4111, the folded edge 4111 is connected to the side cover 412, and the support strip 46 is at least partially accommodated inside the folded edge 4111. In some embodiments, a large portion of the support strip 46 is accommodated inside the folded edge 4111. Alternatively, the support strip 46 is completely accommodated inside the folded edge 4111. Specifically, the side of the surface cover 411 is bent downward and inward toward the stack 4 to form the folded edge 4111, and the support strip 46 is accommodated within the semi-enclosed space formed by the folded edge 4111. Further, the support strip 46 can be connected to the folded edge 4111 and the side cover 412 via a first seam 51.

[0084] Support strip 46 is used to provide partial support to the edges of the stack 4, so that it maintains its unfolded shape, thereby presenting a full and fluffy visual effect and enhancing the softness and layering of the seat's appearance.

[0085] The support strip 46 is made of a soft support material (e.g., foam material), which has excellent resilience and resistance to compression deformation, and can also reduce comfort problems caused by the support plate 45 being too hard.

[0086] The following description, in conjunction with Embodiment 1 and Embodiment 2, details different designs of the middle region of the stack surrounded by the stack edge.

[0087] Example 1: The overlapping surface sleeve 41 and the main body sleeve 3 are connected by the fastening member 44 to form multiple cavities 43, as shown in Figure 3.

[0088] In Embodiment 1, except at the edge of the stack 4 (where the surface sleeve 411 is connected to the main body sleeve 3 via the side sleeve 412), in other areas covered by the stack 4, the surface sleeve 411 can also be connected to the main body sleeve 3 via a fastening member 44, as shown in Figures 3 and 4(a) to 4(f). Through the connection of the surface sleeve 411, side sleeve 412, fastening member 44, and main body sleeve 3, multiple cavities 43 are formed inside the stack 4. Figure 3 shows four cavities, two of which cover the central area P of the cushion, and the other two cover the side wing areas S of the cushion. The surface sleeve 411 comprises multiple sheets, and the main body sleeve 3 covered by the stack 4 also comprises multiple sheets. As shown in Figure 4(f), adjacent sheets of the surface sleeve 411 are fixedly connected to adjacent sheets of the main body sleeve 3 via the fastening member 44. The upper end of the fastening member 44 is fixedly connected to two adjacent pieces of the surface cover 411 via the fifth seam 55, and the lower end of the fastening member 44 is fixedly connected to two adjacent pieces of the body cover 3 via the sixth seam 56.

[0089] In Embodiment 1, the tensioning member 44 can be used solely to separate the cavity and fix the surface sleeve 411 to the main body sleeve 3, or it can be extended and fixed to the foam body 2 to simultaneously fix the main body sleeve 3 to the foam body 2, depending on whether the fixing point of the main body sleeve 3 to the foam body 2 is consistent with the fixing point of the laminate 4 to the main body sleeve 3. The tensioning member 44 can be made of non-woven fabric, which can ensure the tightness of the main body sleeve 3 while also allowing for a loose feel in the laminate sleeve 41.

[0090] In Embodiment 1, multiple cavities 43 are formed inside the stack 4 through the connection of the surface sleeve 411, the side sleeve 412, the fastening member 44, and the body sleeve 3, and each cavity 43 contains a filler 42. The filler 42 in each cavity 43 can be the same or different. More advantageously, the filler 42 can be connected to at least one of the surface sleeve 411, the side sleeve 412, the fastening member 44, and the body sleeve 3 to prevent the filler 42 from moving within the cavity 43. Optionally, the filler 42 is fixedly connected to the surface sleeve 411, and a gap is left between the filler 42 and the body sleeve 3.

[0091] Example 2: The stacked surface sleeve 41 is connected to the main body sleeve 3 through the side surface sleeve 412 to form a cavity 43, as shown in Figures 6(a) and 6(b).

[0092] In Embodiment 2, as shown in Figures 6(a) and 6(b), the edge of the layer 4, the surface cover 411 is connected to the main cover 3 via the side cover 412. The surface cover 411, the side cover 412, and the main cover 3 form a cavity 43 within the layer 4, covering the central area P and the side wing areas S of the cushion. Accordingly, a filler 42 covering the central area P and the side wing areas S of the cushion is placed inside the cavity 43. The filler 42 is fixedly connected to the surface cover 411, and a gap is left or formed between the filler 42 and the main cover 3 (e.g., below the fixed connection between the filler 42 and the surface cover 411). Specifically, the filler 42 and the surface cover 411 are fixedly connected by quilting lines 57 in parallel straight lines or decorative patterns (see Figure 7).

[0093] In Embodiment 2, as shown in Figure 7, the quilting thread 57 passes through the fixed filler 42, pulling the filler at the fixed point taut to the surface cover 411, leaving a gap between the filler 42 and the main body cover 3, especially at the positions corresponding to each quilting thread 57, where more gaps can be formed. A triangular-like gap is formed between the filler 42 and the main body cover 3 at the positions corresponding to the quilting thread 57.

[0094] In Embodiment 2, the filler 42 can be a layered structure formed of flocculent material, or the filler 42 can be flocculent material with relatively independent particles, and the filler 42 is wrapped with a filler cover 421. The filler 42 can be fixedly connected to the layered cover 41 so that a gap is left between the filler 42 and the main cover 3. When the filler 42 is a layered structure 42a as shown in FIG8(a), the quilting thread 57 directly penetrates the layered structure 42a and fixes it to the surface cover 411. When the filler 42 is a granular structure 42b as shown in FIG8(b), the quilting thread 57 penetrates the upper and lower surfaces of the filler 42 and the filler cover 421 and is fixedly connected to the surface cover 411. Both fixed connection methods should ensure that the filler at the fixed point can be pulled taut to the surface cover 411, so that a gap is left between the filler 42 and the main cover 3, especially at the position corresponding to each quilting thread 57, more gaps can be formed.

[0095] In Embodiment 2, as shown in Figure 6(b), the gap corresponding to the position of each quilting line 57 is approximately triangular. Let the thickness of the layered cover 41 be L1, and the gap thickness between the surface cover 411 and the main body cover 3 at the quilting line be L2. Preferably, the gap thickness L2 at the quilting line is about 1 / 2 to 2 / 3 of the thickness L1 of the layered cover 41.

[0096] In Embodiment 2, when the foam body 2 has a concave surface on the side closest to the person, the filling material 42 and the body cover 3 tend to form more gaps due to the sewing process and the cover material, resulting in noticeable wrinkles on the surface cover 411. For example, the approximately triangular gap formed between the filling material 42 and the body cover 3 has an outward-expanding base, resulting in a larger volume, and thus noticeable wrinkles on the surface cover 411. Conversely, when the foam body 2 has a convex surface on the side closest to the person, the approximately triangular gap formed between the filling material 42 and the body cover 3 has an inward-convex base, resulting in a smaller volume, and the surface cover 411 is relatively flatter.

[0097] In Embodiment 2, as shown in Figure 9, when a person sits on the seat, the layer 4 is compressed. Air between the layer cover 41 and the filling 42, air between the main cover 3 and the filling 42, and air inside the filling 42 are expelled. Areas subjected to greater pressure F deform more and expel more air, while areas subjected to less pressure F deform less, maintaining strong support for the person and achieving a more snug fit and a stronger sense of enclosure. Because more gaps are added at the quilting, the cushion has more space to be compressed when subjected to pressure F, further improving the fit and comfort. When the person leaves the seat, the highly elastic, large-particle filling quickly absorbs air, meeting the rebound requirements and maintaining the shape and contour.

[0098] Based on the descriptions of Embodiments 1 and 2 above, in some other embodiments, when the area requiring the layer 4 is large, multiple cavities 43 can be formed inside the layer 4 as needed. The formation method of each cavity 43 and the connection method between adjacent cavities 43 are the same as in Embodiment 1. The fixing method of the filler 42 in each cavity 43 can all adopt the quilted connection method of Embodiment 2. Alternatively, the quilted connection method can be adopted according to the size of each cavity 43. For example, the quilted connection method of Embodiment 2 can be used at the central block area P, while the connection method of Embodiment 1 can be used at the side wing area S. That is, the filler 42 is connected to at least one of the surface cover 411, side cover 412, fastener 44, and body cover 3 using a non-quilted method, as long as it can prevent the filler 42 from moving within the cavity 43.

[0099] In this disclosure, including but not limited to Embodiment 1 and Embodiment 2, the filling material 42 in the cavity 43 formed between the overlapping layer sleeve 41 and the main body sleeve 3 can be a layered structure formed by flocculent material, or the filling material 42 can also be flocculent material with relatively independent particles, and the filling material 42 is wrapped with a filling material cover 421.

[0100] In some embodiments, the filling material 42 may be a fibrous material that is highly elastic, has large particle size, and is softer than the foam body 2, such as pearl cotton, silk floss, comfort foam, goose down, duck down, etc., to make the layer 4 softer and improve comfort.

[0101] As shown in Figure 8(a), the layered structure 42a obtained by processing silk floss or comfort foam is suitable for layers requiring a smoother appearance. Fluffed pearl cotton, or goose down and duck down, are suitable for layers requiring higher comfort.

[0102] As shown in Figure 8(b), the fluffed pearl cotton, or goose down and duck down, has relatively independent particles. After being wrapped by the filling cover 421, it forms a granular structure 42b and is placed as a whole in the cavity 43. There are certain gaps between the independent particles inside the filling cover 421, which allows for relative movement and deformation. The particle size and spacing of these independent particles both affect the fluffiness of the filling 42. The filling cover 421 can define the overall shape of the filling and ensure the surface of the layer 4 is flat. The filling cover 421 can be made of textiles, such as knitted fabric, non-woven fabric, breathable mesh fabric, or mesh elastic fabric.

[0103] In this disclosure, including but not limited to Embodiment 1 and Embodiment 2, a heating pad base fabric 6 may also be provided below the stack 4 (refer to FIG. 4(f)) so that the seat with the stack 4 has a heating function. In some embodiments, the heating pad base fabric 6 is disposed between the body cover 3 and the foam body 2, and together with the body cover 3, is connected to the stack cover 41 and the body cover 3 located outside the coverage area of ​​the stack 4.

[0104] In some embodiments, the heating pad base fabric 6 can be sewn onto the back of the body cover 3 or pasted onto the front of the foam body 2.

[0105] The heating pad base fabric 6 covers the front of the foam body 2, and the body cover 3 covers the front of the heating pad base fabric 6. When fixing the stack 4, as shown in Figure 4(f), the lifting fastener 44 can be used to simultaneously fix and connect two adjacent pieces of the surface cover 411, two adjacent pieces of the body cover 3, and the heating pad base fabric 6 using the fifth seam 55 and the sixth seam 56. The heating pad base fabric 6 can also be pre-fixed (e.g., sewn) to the back of the body cover 3 or fixed (e.g., glued) to the front of the foam body 2, forming a single unit with the body cover 3 or the foam body 2. This method can reduce heat loss during heat transfer. In the case of pre-fixing to the body cover 3, when fixing the stack 4, the lifting fastener 44 can be used to connect the heating pad base fabric 6 and the entire body cover 3, the body cover 3 outside the area covered by the stack 4, and the stack cover 41 by sewing. For cases where the foam body 2 is pre-fixed, when fixing the layer 4, it is only necessary to use the fastener 44 to connect the body cover 3 (the body cover 3 covering the front of the heating pad base fabric 6), the body cover 3 outside the coverage area of ​​the layer 4, and the layer cover 41 by sewing.

[0106] To reduce heat loss during heat transfer or to enhance the massage function, the body cover 3 covered by the layer 4 can be omitted and replaced directly with the heating pad base fabric 6. That is, the heating pad base fabric 6 is connected to the body cover 3 and the layer cover 41 outside the area covered by the layer 4, respectively.

[0107] The heating pad base fabric 6 can be made of breathable 3D mesh or non-woven fabric. Using breathable 3D mesh fabric can also help reduce the impact of the heating pad base fabric 6 on the seat ventilation function.

[0108] The layered cover 41 includes one or more of genuine leather, artificial leather, and fabric. Preferably, the layered cover 41 is made of smooth leather or perforated leather to improve the breathability and ventilation of the layered cover 41, and the layered cover 41 is made of ultra-soft PVC to improve the comfort of the layer 4.

[0109] The body cover 3 includes one or more of the following: genuine leather, artificial leather, fabric, and breathable 3D mesh.

[0110] The overlapping cover 41 and the main body cover 3 within the visible area can be made of the same material to provide the same appearance; the overlapping cover 41 and the main body cover 3 within the visible area can also be made of different materials to meet different needs.

[0111] Based on the embodiments disclosed above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0112] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A layered seat comprising a foam body and a body cover at least partially covering the foam body, the layer comprising a layered cover and a filler, the layered cover and the body cover being connected to form at least one cavity, and at least one of the cavities containing the filler.

2. The seat according to claim 1, wherein, The stacked sleeve includes a surface sleeve and a side sleeve independent of the surface sleeve, and at least one edge of the surface sleeve is connected to the main sleeve through the side sleeve.

3. The seat according to claim 2, wherein, The upper end of the side sleeve is fixedly connected to the surface sleeve, and the lower end of the side sleeve is fixedly connected to or detachably connected to the main body sleeve.

4. The seat according to claim 2, wherein, The stacked cover also includes a back cover connected to the side cover and the main cover, and the back cover is disposed in the area where the stacked cover and the main cover overlap.

5. The seat according to claim 4, wherein, One side of the back cover is connected to the side cover, and the other side of the back cover extends into the area where the surface cover and the body cover overlap, and is connected to the body cover.

6. The seat according to claim 4 or 5, wherein, At least a portion of the back cover is disposed opposite to the front cover.

7. The seat according to claim 6, wherein, The stack also includes a support piece, which is at least partially disposed in the area where the back cover and the front cover are disposed opposite each other.

8. The seat according to claim 2, wherein, The upper end of the side sleeve is connected to the surface sleeve, and the lower end of the side sleeve extends downward and into the area where the surface sleeve and the body sleeve overlap, so as to connect with the body sleeve.

9. The seat according to claim 8, wherein, At least a portion of the side faceplate is disposed opposite to the surface faceplate.

10. The seat according to claim 9, wherein, The stack also includes a support piece, which is at least partially disposed in the area where the side sleeve and the surface sleeve are disposed opposite each other.

11. The seat according to any one of claims 2 to 10, wherein, The stack also includes a support strip, the side of the surface cover is bent to form a folded edge, the folded edge is connected to the side cover, and the support strip is at least partially housed inside the folded edge.

12. The seat according to any one of claims 1 to 11, wherein, The overlapping sleeve and the main body sleeve are connected by a fastening member to form multiple cavities.

13. The seat according to any one of claims 2 to 11, wherein, The surface sleeve and the main body sleeve are connected by a lifting member, and the surface sleeve, the side sleeve, the lifting member and the main body sleeve are connected to form multiple cavities.

14. The seat according to claim 13, wherein, Both the surface cover and the body cover include multiple pieces of material. Two adjacent pieces of material on the surface cover are fixedly connected to two adjacent pieces of material on the body cover by the fastening member.

15. The seat according to claim 13 or 14, wherein, The filler is connected to at least one of the surface sleeve, the side sleeve, the clamping member, and the body sleeve to prevent the filler from moving within the cavity.

16. The seat according to any one of claims 1 to 15, wherein, The filler is fixedly connected to the stacked surface cover, and a gap is left between the filler and the main body cover.

17. The seat according to any one of claims 2 to 11, wherein, The surface cover, the side cover, and the main cover are connected to form a cavity. The filler is fixedly connected to the surface cover, and a gap is left between the filler and the main cover.

18. The seat according to claim 17, wherein, The filler is fixedly connected to the surface by quilting lines in parallel straight lines or decorative patterns.

19. The seat according to claim 18, wherein, A triangular gap is formed between the filler and the body cover at the position corresponding to the quilting line.

20. The seat according to claim 18 or 19, wherein, The filling material is a layered structure formed by flocculent material, and the quilting thread passes through the filling material and is fixed to the surface cover.

21. The seat according to claim 18 or 19, wherein, The filling material is a flocculent material with relatively independent particles. The filling material is wrapped with a filling material cover. The quilting thread passes through the filling material and the filling material cover and is fixedly connected to the surface cover.

22. The seat according to claim 21, wherein, The gaps between adjacent independent particles inside the filler cover and the diameter of the independent particles allow for relative movement and deformation.

23. The seat according to any one of claims 1 to 22, wherein, The overlapping sleeve and the main body sleeve are detachably connected.

24. The seat according to any one of claims 1 to 23, wherein, A heating pad base fabric is also provided below the stacked layers.

25. The seat according to claim 24, wherein, The heating pad base fabric is disposed between the main body cover and the foamed body, and together with the main body cover, it is connected to the stacked layer cover and the main body cover located outside the stacked coverage area.

26. The seat according to claim 24 or 25, wherein, The heating pad base fabric is sewn onto the back of the body cover, or pasted onto the front of the foamed body, or replaces the body cover located in the layered coverage area, and is connected to the layered cover and the body cover located outside the layered coverage area, respectively.

27. The seat according to any one of claims 1 to 26, wherein, The stacked layers include at least one of a backrest stack, a seat cushion stack, a leg rest stack, and a headrest stack.

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