Automobile seat

Abstract

The invention relates to a car seat having a foam body and a seat cover which covers the foam body, characterized in that the seat cover has a layered fabric structure locally, which has at least one fabric assembly, which comprises a front surface layer which is fixed at its rear end to the foam body, and a rear surface layer which is superimposed on a rear section of the front surface layer from above with its front section and thus the rear surface layer and the front surface layer form an overlap region, wherein the rear surface layer is movable relative to the front surface layer so that the overlap region changes.

Description

Technical Field

[0001] This invention relates to a car seat. Background Technology

[0002] See Figure 10 and Figure 11 Car seats typically have a composite structure, usually consisting of three parts: a seat frame 100, elastic foam 200, and a seat cover 300. The seat frame 300 is primarily a welded metal structure, serving to shape and support the body. The elastic foam 200 is placed on the seat frame 100 to increase comfort. The seat cover 300, or upholstery, is visible from the car interior and serves a decorative purpose.

[0003] Figure 10 A split-type seat is shown, in which the backrest 500 and the seat cushion 600 are independent of each other and connected by bolts. The backrest 500 and the seat cushion 600 are each covered by an independent cover 300. Therefore, during the adjustment of the backrest 500 relative to the seat cushion 600, the cover 300 of the backrest 500 and the cover 300 of the seat cushion 600 do not interact with each other and there is no movement interference.

[0004] Figure 11 A longitudinal sectional view shows a one-piece seat, whose backrest 500 and seat cushion 600 typically consist of a single piece of foam 200 and a single piece of cover 300 covering the entire foam 200. For this type of sofa-style one-piece seat, or bucket seat, the single piece of cover 300 cannot provide any range of motion when the backrest 500 is adjusted because it is fixed as a whole. To provide the backrest 500 with adjustment functionality in a one-piece seat, such as maintaining adjustability of the backrest 500 within a 30-degree angle relative to the seat cushion 600, the cover 300 needs to have sufficient deformability, which places high demands on conventional single piece of cover material. Even if the cover material has sufficient elasticity to allow adjustment, tension can still cause irreversible wrinkles, affecting the appearance. This is particularly true for the area adjacent to the backrest 500 and armrests, which typically deforms more significantly when the backrest 500 is adjusted, resulting in a greater impact on the appearance of this area.

[0005] Therefore, the adjustable car seat needs further improvement in terms of the unfoldability and recoverability of its seat cover 300. Summary of the Invention

[0006] The object of this invention is to provide a car seat that solves at least one of the problems mentioned above.

[0007] To achieve the above objectives, the present invention provides a car seat having a foam body and a seat cover covering the foam body, characterized in that the seat cover partially has a layered fabric structure, the layered fabric structure having at least one fabric component, the fabric component comprising:

[0008] Front surface layer, the front surface layer being fixed to the foam at its rear end; and

[0009] A rear surface layer, wherein its front section is stacked above the rear section of the front surface layer and thus the rear surface layer and the front surface layer form an overlapping area, wherein the rear surface layer is movable relative to the front surface layer, thereby changing the overlapping area.

[0010] For example, this allows for a seat cover surface layer that is visible indoors to have good unfoldability and will not wrinkle, thus maintaining its aesthetic appeal, without hindering the partial adjustability of the car seat.

[0011] Advantageously, the fabric assembly further includes a lining layer disposed at least partially in the overlapping region between the rear surface layer and the front surface layer, the lining layer being connected to the front end of the rear surface layer at its front end and fixed to the foam at its rear end.

[0012] Advantageously, the lining layer is fixed to the foam at a distance from the rear end of the front surface layer.

[0013] Advantageously, the fabric assembly further includes an inner layer that covers the foam across the distance between the rear end of the lining layer and the rear end of the front surface layer.

[0014] Advantageously, the inner layer is connected at its two ends to the rear end of the lining layer and the rear end of the front surface layer, respectively.

[0015] Advantageously, the inner layer is further connected to the connection with the lining layer and the front surface layer with hook and loop fasteners, and the foam body is provided with a matching hook and loop fastener, which is connected to the matching hook and loop fastener.

[0016] Advantageously, the hook and loop fastener is disposed in the receiving groove of the foam, and the receiving groove also completely accommodates the hook and loop fastener.

[0017] Advantageously, the inner layer is elastically configured and tensioned over the foam, or the inner layer is inelastically configured and loosely over the foam in its initial state.

[0018] Advantageously, the lining layer is connected to the rear end of the front surface layer at its rear end.

[0019] Advantageously, the lining layer and the front surface layer are further connected by hook and loop fasteners at the connection point, and a matching hook and loop fastener is provided on the foam, the hook and loop fasteners being connected to the matching hook and loop fasteners.

[0020] Advantageously, the hook and loop fastener is disposed in the receiving groove of the foam, and the receiving groove also completely accommodates the hook and loop fastener.

[0021] Advantageously, the lining layer and the rear surface layer are stitched or bonded to each other at their front ends.

[0022] Advantageously, the lining layer is resilient, such that when the rear surface layer moves backward, it can drive the lining layer to move backward and cause the lining layer to bend in a U-shape at its rear end based on its resilientness, and when the rear surface layer moves forward, it can be assisted in forward movement by the lining layer based on its resilientness.

[0023] Advantageously, the layered fabric structure has at least two fabric components, wherein the rear surface layer of the first fabric component constitutes the front surface layer of the second fabric component.

[0024] Advantageously, the rear surface layer is fixed to the foam with its rear end, and the rear end of the rear surface layer is disposed at a distance behind the rear end of the front surface layer, and the rear surface layer is movable relative to the front surface layer based on the movement of the foam.

[0025] Advantageously, the layered fabric structure is arranged in the connecting area between the seat back and the armrest, or in the backrest shoulder or leg rest with motion adjustment function.

[0026] Advantageously, the front ends of the lining layer and the rear surface layer are folded 180 degrees relative to each other with respect to the main body portions of the lining layer and the rear surface layer, wherein the front ends of the lining layer and the rear surface layer are sewn together with each other, and together with the two main body portions, the four are sewn together with each other. Attached Figure Description

[0027] The invention will now be explained in more detail with reference to the accompanying drawings and embodiments, but the invention is not limited to the embodiments described in the drawings and detailed below. The drawings are as follows:

[0028] Figure 1a This is a schematic side view of a one-piece car seat with an adjustable backrest covered by the car seat cover of the present invention, wherein the backrest and the car seat cover are in their initial state.

[0029] Figure 1b yes Figure 1a A schematic side view of a one-piece car seat, with the backrest in its rear-adjusted position and the car seat cover in its unfolded position.

[0030] Figure 2a This is a schematic perspective view of a one-piece car seat with an adjustable backrest covered by the car seat cover of the present invention, wherein the backrest and the car seat cover are in their initial state.

[0031] Figure 2b yes Figure 2a A schematic perspective view of a one-piece car seat, with the backrest in its rear-adjusted position and the car seat cover in its unfolded position.

[0032] Figure 3 This is a schematic partial perspective view of the layered fabric structure of the car seat cover of the present invention;

[0033] Figure 4 This is a schematic side view of the foam body of the one-piece car seat of the present invention in the backrest-armrest connection area, wherein the foam body is in its initial state (top) and unfolded state (bottom).

[0034] Figure 5 yes Figure 4 A schematic side view of the foam body together with the layered fabric structure covering it, wherein the foam body and the layered fabric structure are in their initial and unfolded states, respectively.

[0035] Figure 6 This is a schematic diagram of the stress state of the layered fabric structure of the present invention during the unfolding process;

[0036] Figure 7 yes Figure 6 A magnified view of detail A in the image;

[0037] Figure 8 yes Figure 6 A magnified view of detail B in the image;

[0038] Figure 9 Corresponding to Figure 5 The view is inflexible, but the inner layer is not.

[0039] Figure 10 An exploded schematic diagram of a split-type car seat is shown; and

[0040] Figure 11 A side sectional view of a one-piece car seat is shown. Detailed Implementation

[0041] The following describes illustrative embodiments of the invention. In this specification, various systems, structures, and devices are schematically depicted in the accompanying drawings for illustrative purposes only, and not all features of actual systems, structures, and devices are described. For example, well-known functions or structures are not described in detail to avoid unnecessary detail that could obscure the invention. It should be understood that in any practical application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related limitations need to be followed. These specific goals may vary depending on the practical application. Furthermore, it should be understood that while such implementation decisions are complex and time-consuming, they are routine tasks for those skilled in the art who will benefit from this invention.

[0042] The terms and phrases used herein should be understood and interpreted in accordance with the understanding of those skilled in the art. The consistent use of terms or phrases herein is not intended to imply a specific definition, i.e., a definition different from the common and conventional meaning understood by those skilled in the art. For terms or phrases intended to have a specific meaning, i.e., a meaning different from that understood by those skilled in the art, such specific definition will be explicitly listed in the specification, giving the specific definition of the term or phrase directly and unambiguously.

[0043] Unless otherwise required by the content, throughout the following description, the word “including” and its variations, such as “comprising” and “having”, will be interpreted in an open-ended, inclusive sense, that is, as “including but not limited to”.

[0044] Figures 1a to 2b The separate integrated seats shown each have a backrest adjustment function and can be equipped with the car seat cover 1 of the present invention. The seat cover 1 may have an innovatively designed fish-scale or layered fabric structure 2 in some areas, which has good unfoldability and recoverability. The layered fabric structure 2 is here located in the backrest-armrest connection area where the deformation is large during adjustment.

[0045] exist Figure 1a and Figure 1b The images show the initial state of the one-piece seat when the backrest 3 is not adjusted backward relative to the seat cushion 4, and the rearward adjustment state when the backrest 3 has been adjusted backward relative to the seat cushion 4 (pivoting backward here). The adjustment angle or opening angle α can be seen here.

[0046] exist Figure 2a and Figure 2b The images show the initial and rearward-extended states of the layered fabric structure 2 at the backrest-armrest junction area of ​​the one-piece seat. Figure 2bAs can be seen, the two newly exposed areas 5 appear after the layered fabric structure 2 is unfolded backward, and their lengths constitute an increase compared to the initial state.

[0047] The following is an example of the specific structure and working principle of the layered fabric structure 2 of the seat cover 1.

[0048] Figure 3 A portion of a layered fabric structure 2 is shown, which can form one complete fabric assembly 6, and the layered fabric structure 2 can include multiple such fabric assemblies 6. The fabric assembly 6 can include a lower surface layer, or front surface layer 7, and an upper surface layer, or back surface layer 8, which are only partially overlapped with each other. The back surface layer 8 overlaps the rear surface layer 7 from above with its front section, forming an overlapping area 30, while the front section of the front surface layer 7 is exposed, i.e., not covered. The fabric assembly 6 can also include a lining layer 9 disposed below and completely covered by the back surface layer 8, the lining layer 9 being connected to the front section of the back surface layer 8 with its front end, as will be described in detail below. The fabric assembly 6 can also include an inner layer 10 located below and completely covered by the lining layer 9, the rear end of the inner layer 10 being connected to the rear end of the lining layer 9, and the front end of the inner layer 10 being connected to the rear end of the front surface layer 7, as will be described in detail below.

[0049] Figure 4 The diagram illustrates a partial side view of the foam body of the layered fabric structure 2 to be installed. To the left of the vertical dotted line L is the moving area 11 of the foam body, which can move (in this case, pivot) and extend with the adjustment of the backrest 3. To the right of the vertical dotted line L is the stationary area 12 of the foam body, which does not move or whose movement is negligible. The moving area 11 could be the backrest 3-armrest connection area of ​​a one-piece seat, which deforms significantly when the backrest 3 is adjusted. Of course, other movable parts of the foam body 20 could also be considered, such as the backrest shoulder area or leg rest area of ​​a seat with motion adjustment functions, etc.

[0050] Four receiving slots 13 are visible on the left-hand moving area 11, which define four foam sections S. Figure 4 The diagram above illustrates the initial state of the foam movement area 11 without backrest 3 being adjusted backward. The initial lengths of the four foam segments S are S1, S2, S3, and S4, respectively. Figure 4 The figure below shows the unfolded state of the foam movement area 11 after the backrest 3 is adjusted backward (i.e. to the left) (shown by solid lines). The lengths of the four foam segments S after extension are S11, S22, S33, and S44, which are greater than the initial lengths S1, S2, S3, and S4, respectively.

[0051] Figure 5 The top and bottom images are respectively related to Figure 4 The upper and lower images correspond to each other, but the difference is... Figure 5 The seat cover 1, or its layered fabric structure 2, mounted on the foam body 20 is also shown. Figure 5 The layered fabric structure 2 shown can be considered as having two fabric components 6 mentioned above, namely the right or front fabric component 6 and the left or rear fabric component 6. Here, we can see the front surface layer 7, the middle surface layer and the rear surface layer 8 arranged sequentially from front to back, which are independent of each other. The middle surface layer can be regarded as both the "rear surface layer 8" of the front fabric component 6 and the "front surface layer 7" of the rear fabric component 6.

[0052] exist Figure 5 As can be seen, each inner layer 10 is inserted into and fixed in two adjacent receiving slots 13 after its two ends are connected to the rear end of a lining layer 9 and the rear end of a front surface layer 7, respectively. Figure 7 An exemplary fixation configuration of the inner layer 10 and the front surface layer 7 within a receiving groove 13 of the foam body 20 is schematically enlarged, wherein the front end of the inner layer 10 and the rear end of the front surface layer 7 are flush-lying and surrounded by a U-shaped hook and loop fastener 14, which, together with the inner layer 10 and the front surface layer 7, is sewn together using a stitch 15. The U-shaped hook and loop fastener 14, for example, has a roughened (or hooked) surface on its outer side, while a mating hook and loop fastener 16, for example, has been fixed at the bottom of the receiving groove 13 during the foaming process, at its bottom. This mating hook and loop fastener 16 may have an outward-facing hooked (or roughened) surface. The U-shaped hook and loop fastener 14 can thus be secured to the mating hook and loop fastener 16, thereby securely fixing the front end of the inner layer 10 and the rear end of the front surface layer 7 to the foam body 20. Here, the depth of the receiving groove 13 can be designed so that the entire U-shaped hook and loop fastener 14 is completely submerged in the receiving groove 13, thereby preventing the U-shaped hook and loop fastener 14 from affecting the flatness of the seat cover 1 outside the foam body 20. In some embodiments, the outer surface of the hook and loop fastener 16 can be flush with or protrude outward from the surface of the foam body 20, where the U-shaped hook and loop fastener 14 can be bonded to the surface of the foam body 20 protruding outward. In some embodiments, the hook and loop fastener 14 can be omitted, and the front end of the inner layer 10 and the rear end of the surface layer can be directly bonded to the foam body 20 with glue or double-sided adhesive. Of course, other suitable methods of fixing the front end of the inner layer 10 and the rear end of the surface layer to the foam body 20 are also possible.

[0053] The way the rear end of the inner layer 10 and the rear end of the lining layer 9 are fixed on the foam body 20 can be the same as the way the front end of the inner layer 10 and the rear end of the front surface layer 7 are fixed on the foam body 20. It will not be repeated here. Just replace the front surface layer 7 with the lining layer 9 accordingly.

[0054] Figure 8The diagram schematically enlarges to show the connection between the rear surface layer 8 and the lining layer 9, or their front ends, wherein the front end 8' of the rear surface layer 8 and the front end 9' of the lining layer 9 are folded 180 degrees toward each other and then flattened together. The two front ends 8', 9' (i.e., two layers in total) are sewn together approximately at the bend using seam 17. On the left or rear side of seam 17, the two front ends 8', 9', together with the adjacent and overlapping main body portion (i.e., four layers in total), are sewn together using single-needle stitch 18. The single-needle stitch 18 is particularly important for achieving parallelism and flatness between the main body of the rear surface layer 8 and the main body of the lining layer 9. In some embodiments, the rear surface layer 8 and the lining layer 9 may also be bonded together at their front ends.

[0055] contrast Figure 5 As shown in the upper and lower figures, when the backrest 3 is adjusted backward, the rear surface layer 8 of each fabric component 6 moves or slides backward relative to its front surface layer 7. Therefore, the coverage area of ​​the rear surface layer 8 over the front surface layer 7, or the area of ​​the overlap region 30 between the two, will decrease accordingly. In other words, more of the front surface layer 7 will be exposed, forming... Figure 2b The exposed area 5 is shown in the diagram. In other embodiments, such as for complex multi-directional movements (e.g., with torsion), while the original overlapping area 30 is partially exposed, there may be areas that were originally exposed that are overlapped, resulting in the total area remaining essentially unchanged, but the location where the overlapping area 30 is formed is at least changed.

[0056] During the adjustment of the backrest 3, the individual surface layers 7 and 8 are independent of each other and do not interfere with each other's movement. Therefore, they are essentially not deformed and can be considered to be of a fixed length. Consequently, the surface layers 7 and 8 facing the car interior will not wrinkle due to the adjustment of the backrest 3, thus not affecting the aesthetics.

[0057] Since the lining layer 9 is fixed to the front end of the rear surface layer 8 with its front end, when the rear surface layer 8 of the fabric assembly 6 slides backward, it will cause the lining layer 9 to slide backward on the front surface layer 7. Since the rear end of the lining layer 9 is fixed to the foam 20, the lining layer 9 will bend or stack at its rear end when it slides backward, forming a U-shaped bend 19.

[0058] To address this, on the one hand, the lining layer 9 can be designed to be smooth, thereby reducing the friction between the lining layer 9 and the two surface layers 7 and 8 that it contacts. In particular, the inner or lower surfaces of the surface layers 7 and 8 are relatively rough. If the rear surface layer 8 directly contacts the front surface layer 7, it will cause resistance when sliding against each other. The relatively smooth lining layer 9 can act as an intermediate lubricant, significantly reducing friction. On the other hand, the lining layer 9 should also have a certain degree of toughness. This not only makes it easier to form a U-shaped bend 19 when adjusting backward, but also allows the rear surface layer 8 connected to it to return to its initial position when adjusting forward, enhancing the recoverability (returnability) of the rear surface layer 8. Based on the toughness of the lining layer 9, the lining layer 9 will not wrinkle / accumulate in the middle of its length direction during the subsequent backward movement of the surface layer 8, but will maintain a flat shape as it moves backward. Third, the liner layer 9 allows the rear surface layer 8 connected to it to form a closed space with the foam 20 covered by the rear surface layer 8, i.e., the second and fourth foam segments S from the front to the back, preventing foreign objects from approaching the foam 20 and thus protecting the foam 20. Finally, the thickness of the liner layer 9 can be designed to be less than the thickness of the surface layers 7 and 8 to reduce the thickness gradient between two adjacent surface layers 7 and 8.

[0059] See Figure 5 In the above figure, in the initial state, the length of each liner layer 9 is the length between its fixed rear end on the foam 20 and its moving front end fixed to the rear surface layer 8, with the lengths of the two liner layers 9 being C1 and C2, respectively. (See also...) Figure 5 As shown in the figure below, with the backrest 3 adjusted backward, the length of each lining layer 9 is the length between the bottom of its U-shaped bend 19 and the moving front end fixed to the rear surface layer 8. The lengths of the lining layers 9 before and after this are C3 and C4, respectively.

[0060] exist Figure 5 It can also be seen that the two inner layers 10 respectively span the first and third foam segments S from front to back. Figure 5 In the illustrated embodiment, the inner layer 10 can be made of an elastic material, so that during the adjustment of the backrest 3, the inner layer 10 is also elastically stretched as the lengths of the first and third foam sections S increase. Figure 5 In the initial position shown in the figure above, the initial lengths of the two inner layers 10 before deformation are N1 and N2, respectively. Figure 5In the rearward adjustment position shown in the figure below, the deformed lengths of the two inner layers 10 are N3 and N4, respectively. Therefore, the elastic inner layer 10 can apply a restoring force, or recovery force, to the first and third foam segments S during the deformation of the foam body. When the backrest 3 is adjusted forward again, this restoring force can assist in the recovery of the foam segment S. Furthermore, since the inner layer 10 is connected to the rear end of the lining layer 9, the inner layer 10 can also apply a forward pulling force to the rear end of the lining layer 9 during the deformation of the foam body (because the inner layer 10, lining layer 9, and foam are fixed, the pulling force on the lining layer 9 can be transmitted by the inner layer 10 through the foam or directly by the inner layer 10). Simultaneously, the lining layer 9 receives a rearward pulling force from the rear surface layer 8 through its front end. Thus, two forces in opposite directions are generated at the rear end of the lining layer 9, which is beneficial for forming the U-shaped bend 19 at the rear end of the lining layer 9.

[0061] During the movement, the relationship between the deformation of the lining layer 9 and the inner layer 10 and the deformation of the foam section S is as follows:

[0062] (S11-S1)+(S33-S3)=(N3-N1)+(N4-N2);

[0063] (S22-S2)+(S44-S4)=2(C1-C3)+2(C2-C4).

[0064] The lining layer 9 before deformation has lengths of C1 and C2, and the lining layer 9 after deformation has lengths of C3 and C4 (in a stacked state). The inner layer 10 before deformation has lengths of N1 and N2, and the inner layer 10 after deformation has lengths of N3 and N4.

[0065] Figure 6 The diagram illustrates the force analysis of the layered fabric structure 2 during the rearward adjustment of the backrest 3. When the back surface layer 8 shifts rearward, it experiences the following forces: the tensile force F1 generated by its rearward displacement from its fixed point on the foam 20, and the elastic tension F2 generated by the deformation of the left inner layer 10 with the foam 20, resulting in the movement of the back surface layer 9. The lining layer 9 experiences a counterforce F2' from the elastic tension F2 of the right inner layer 10. Therefore, in the opposite direction of movement, the lining layer 9 helps to stack to form the aforementioned U-shaped bend 19. When the backrest 3 returns to its forward position, the elastic tension F2 of the inner layer 10 gradually disappears, and the lining layer 9 (and the back surface layer 8) shifts forward to return to their initial position due to the rigidity of their materials.

[0066] Figure 9 An embodiment of the inelastic inner layer 10 is shown. Figure 9 In the initial state shown in the diagram above, the inner layer 10 is relaxed and wrinkled, meaning it has a margin of error. Figure 9In the initial state shown in the figure below, the inner layer 10 is taut. That is to say, the length of the inner layer 10 in the taut state is basically equal to the length of the foam section S covered by the backrest 3 when it is adjusted to the maximum position.

[0067] The inner layer 10 reduces the length of the foam that the rear surface layer 8 needs to directly cover. Here, the two slidable rear surface layers 8 on the left directly cover the second and fourth foam segments S, respectively, while the first and third foam segments S are covered by the inner layer 10.

[0068] In some embodiments, it is conceivable to omit the inner layer 10 and instead directly connect the rear end of the lining layer 9 of each fabric assembly 6 to the rear end of the front surface layer 7. In this case, the slidable rear surface layers 8 of the two fabric assemblies 6 directly cover the first and second, and the third and fourth foam sections S, respectively. Although this scheme without the inner layer 10 is also feasible, the scheme with the inner layer 10 has certain advantages. On the one hand, the length of the rear surface layer 8 can be reduced accordingly due to the presence of the inner layer 10. On the other hand, some of the deformation of the foam sections S, which were originally superimposed on the lining layer 9 (here, the deformation of the first and third foam sections S covered by the inner layer 10), can be shared by the inner layer 10. This shortens the length of the lining layer 9 that moves backward when the backrest 3 is adjusted backward, and shortens the U-shaped bend 19. This is beneficial for the lining layer 9 to recover its resilience and drive the rear surface layer 8 when the backrest 3 is adjusted forward.

[0069] In some implementations, the lining layer 9 and inner layer 10 can be omitted in the minimalist structure of the layered fabric structure 2. This requires the movable back surface layer 8 to have a certain degree of toughness so that the back surface layer 8 can return to its initial state when the backrest 3 is adjusted forward.

[0070] Finally, it should be noted that the above embodiments are merely for understanding and explaining the present invention, and do not constitute a limitation on the scope of protection of the present invention. Those skilled in the art can make modifications based on the above embodiments, and all such modifications do not depart from the scope of protection of the present invention.

Claims

1. A car seat, the car seat having a foam body and a seat cover covering the foam body, characterized in that, The seat cover partially has a layered fabric structure, the layered fabric structure having at least one fabric component, the fabric component comprising: Front surface layer, the front surface layer being fixed to the foam at its rear end; and A rear surface layer, wherein its front section is stacked above the rear section of the front surface layer, and thus the rear surface layer and the front surface layer form an overlapping area, wherein the rear surface layer is movable relative to the front surface layer, thereby changing the overlapping area. The fabric assembly further includes a lining layer, which is disposed at least partially in the overlapping area between the rear surface layer and the front surface layer. The lining layer is connected to the front end of the rear surface layer with its front end and fixed to the foam with its rear end.

2. The car seat according to claim 1, characterized in that, The lining layer is fixed to the foam at a distance from the rear end of the front surface layer.

3. The car seat according to claim 2, characterized in that, The fabric assembly also includes an inner layer that covers the foam across the distance between the rear end of the lining layer and the rear end of the front surface layer.

4. The car seat according to claim 3, characterized in that, The inner layer is connected at its two ends to the rear end of the lining layer and the rear end of the front surface layer, respectively.

5. The car seat according to claim 4, characterized in that, The inner layer is further connected to the lining layer and the front surface layer with hook and loop fasteners, and the foam body is provided with matching hook and loop fasteners, which are connected to the matching hook and loop fasteners.

6. The car seat according to claim 5, characterized in that, The hook and loop fastener is disposed in the receiving groove of the foam body, and the receiving groove also completely accommodates the hook and loop fastener.

7. The car seat according to claim 3, characterized in that, The inner layer is elastically formed and tautly covers the foam, or the inner layer is inelastically formed and loosely covers the foam in its initial state.

8. The car seat according to claim 1, characterized in that, The lining layer is connected to the rear end of the front surface layer at its rear end.

9. The automobile seat according to claim 8, characterized in that, The lining layer and the front surface layer are connected by hook and loop fasteners at the connection point, and a matching hook and loop fastener is provided on the foam body, the hook and loop fastener being connected to the matching hook and loop fastener.

10. The automobile seat according to claim 9, characterized in that, The hook and loop fastener is disposed in the receiving groove of the foam body, and the receiving groove also completely accommodates the hook and loop fastener.

11. The car seat according to claim 1, characterized in that, The lining layer and the rear surface layer are stitched or bonded to each other at their front ends.

12. The car seat according to claim 1, characterized in that, The lining layer is resilient, such that when the rear surface layer moves backward, it can drive the lining layer to move backward and cause the lining layer to bend in a U-shape at its rear end based on its resilience, and when the rear surface layer moves forward, it can be assisted in moving forward by the lining layer based on its resilience.

13. The car seat according to claim 1, characterized in that, The layered fabric structure has at least two fabric components, wherein the back surface layer of the first fabric component constitutes the front surface layer of the second fabric component.

14. The car seat according to claim 1, characterized in that, The rear surface layer is fixed to the foam body with its rear end, and the rear end of the rear surface layer is disposed behind the rear end of the front surface layer at a distance, and the rear surface layer is movable relative to the front surface layer based on the movement of the foam body.

15. The automobile seat according to claim 1, characterized in that, The layered fabric structure is arranged in the connecting area between the seat back and armrest, or in the backrest shoulder area or leg rest area with motion adjustment function.

16. The automobile seat according to claim 1, characterized in that, The front ends of the lining layer and the rear surface layer are folded 180 degrees relative to each other relative to the main body portions of the lining layer and the rear surface layer, wherein the front ends of the lining layer and the rear surface layer are sewn together with each other, and together with the two main body portions, the four are sewn together with each other.

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