Seat with open seam

Abstract

The utility model relates to a seat with an open seam, which comprises a soft cushion layer and a seat surface cover covered on the soft cushion layer, and the seat surface cover comprises at least one open seam visible by passengers and closed seams positioned at two ends of the extension direction of the open seam. According to the utility model, the open seam can be formed on the seat cover, so that more modeling selections on the surface of the seat can be met, and the open seam has obvious lamination thickness and better three-dimensional effect.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a seat with an open seam. Background Art

[0002] In order to make the appearance of car seats more beautiful and three-dimensional, and to provide passengers with comfortable and beautiful enjoyment, the design of car seat covers is becoming more and more diverse. However, existing seat covers are usually made by directly splicing multiple pieces according to design requirements, which can only present a single sewing line on the seat surface. Moreover, the seat cover itself cannot present a three-dimensional effect, and cannot meet the current requirements for diversified design of seat covers. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a seat with an open seam, which can present an open seam on the seat cover to meet more styling options for the seat surface, and the open seam has an obvious laminated thickness, resulting in a better three-dimensional effect.

[0004] The utility model is realized by the following scheme: a seat with an open seam comprises a cushion layer and a seat cover covering the cushion layer, wherein the seat cover comprises at least one open seam visible to an occupant and closed seams at two ends of the extending direction of the open seam.

[0005] A further improvement of the utility model is that the open seam and the closed seam are formed by two opposite S-shaped or Z-shaped folded parts.

[0006] A further improvement of the present invention is that the two folding portions are arranged symmetrically to each other.

[0007] A further improvement of the utility model is that each of the folding portions comprises three overlapping first cover sections, a second cover section and a third cover section. When the seat is occupied, the first cover section is away from the human body, the third cover section is close to the human body, and the second cover section is located between the first cover section and the third cover section.

[0008] A further improvement of the utility model is that each of the folding portions also includes a first bending section located between the second cover section and the third cover section, a portion of the two first bending sections of the two folding portions are spaced apart from each other to form the open seam and another portion of the two first bending sections are brought together to form the closed seam.

[0009] A further improvement of the present invention is that the other parts of the two first bending sections are connected and fixed to each other to form the closed seam, and the connection and fixing method includes any one or more of suturing, bonding, and fusion.

[0010] A further improvement of the present utility model lies in that the free ends of the two third face sleeve sections, which are away from the opening seam, are respectively fixed to the soft cushion layer, so as to open the opening seam by stretching the two third face sleeve sections in two opposite directions.

[0011] A further improvement of the present utility model lies in that the free ends of the two third face sleeve sections, which are away from the opening seam, are formed with arc-shaped transition edges that narrow inward corresponding to the positions of each opening seam. Two linear second fixing grooves are formed on the soft cushion layer. The free ends of the two third face sleeve sections, which are away from the opening seam, are respectively fixed into the two second fixing grooves, so that the opening seam can be stretched sufficiently.

[0012] A further improvement of the present utility model lies in that the soft cushion layer is provided with a first fixing groove for accommodating and fixing the folding part.

[0013] A further improvement of the present utility model lies in that the first face sleeve section and / or the second face sleeve section of the folding part are fixed into the first fixing groove by any one or more of a hook-and-loop fastener, a buckle, and a C-ring.

[0014] A further improvement of the present utility model lies in that the first face sleeve section, the second face sleeve section, and the third face sleeve section are formed by folding a one-piece cut piece.

[0015] A further improvement of the present utility model lies in that each folding part further includes a second bending section located between the first face sleeve section and the second face sleeve section. The first face sleeve section and the second face sleeve section are connected and fixed to shape the second bending section. The connection and fixing methods include any one or more of sewing, bonding, and fusing.

[0016] A further improvement of the present utility model lies in that it further includes a decorative bottom lining sandwiched between the first face sleeve section and the second face sleeve section. The two sides of the decorative bottom lining are respectively fixedly connected to the first face sleeve section and / or the second face sleeve section of the two folding parts.

[0017] A further improvement of the present utility model lies in that the second face sleeve section and the third face sleeve section of each folding part are formed by folding a first cut piece, and the first face sleeve section is provided by a second cut piece. The two folding parts include two first cut pieces and one second cut piece.

[0018] A further improvement of the present utility model lies in that the appearance of the second cut piece is different from the appearance of the first cut piece.

[0019] The utility model can present an opening seam on the seat cover, which can increase the selection of the seat surface shape. At the same time, through the setting of the opening seam, the activity space of the seat cover can be improved, and the comfort can be improved to a certain extent. Moreover, the opening seam has an obvious laminated thickness, which can show a better three-dimensional shape effect. The utility model also innovatively uses a one-piece cutting piece to form a combination of an opening seam and a closing seam by folding and intermittently approaching and fixing at the bending part, so that several opening seams can be presented locally, and the number, setting direction and setting position thereof can be flexibly designed, which can meet more shape selection of the seat surface. In addition, a decorative backing can be arranged in the opening seam. When the seat cover is tightened and the opening seam is opened, the appearance of the decorative backing can be shown through the opening seam, making the appearance effect of the seat surface more rich. Brief Description of the Drawings

[0020] Figure 1 Fig. shows a schematic diagram of the seam structure on the seat of the utility model.

[0021] Figure 2 Fig. shows the first embodiment in Figure 1 the A-A cross-sectional schematic diagram.

[0022] Figure 3 Fig. shows the first embodiment in Figure 1 the B-B cross-sectional schematic diagram.

[0023] Figure 4 Fig. shows the schematic diagram of the formation steps of the seam structure in the first embodiment Figure 1 .

[0024] Figure 5 Fig. shows the schematic diagram of the formation steps of the seam structure in the first embodiment Figure 2 .

[0025] Figure 6 Fig. shows the schematic diagram of the formation steps of the seam structure in the first embodiment Figure 3 .

[0026] Figure 7 Fig. shows the exploded state schematic diagram of the connection between the seam structure and the soft cushion layer in the first embodiment.

[0027] Figure 8 Fig. shows the assembled state schematic diagram of the connection between the seam structure and the soft cushion layer through a hook-and-loop fastener in the first embodiment.

[0028] Figure 9 Fig. shows the assembled state schematic diagram of the connection between the seam structure and the soft cushion layer through a C-ring and a buckle in the first embodiment.

[0029] Figure 10 Fig. shows the front view of the fixation of both ends of the seat cover of the utility model and the seam structure.

[0030] Figure 11 Shows a three-dimensional schematic diagram of the decorative backing sewn together with the first seat cover section and the second seat cover section in the first embodiment.

[0031] Figure 12 Shows a schematic assembly state diagram of the seat cover with a decorative backing and the soft cushion layer connected by a hook-and-loop fastener in the first embodiment.

[0032] Figure 13 Shows the second embodiment in Figure 1 A - A cross-sectional schematic diagram.

[0033] Figure 14 Shows the second embodiment in Figure 1 B - B cross-sectional schematic diagram.

[0034] Figure 15 Shows the formation steps of the seam structure in the second embodiment schematically Figure 1 .

[0035] Figure 16 Shows Figure 15 A detailed enlarged view at C in.

[0036] Figure 17 Shows the formation steps of the seam structure in the second embodiment schematically Figure 2 .

[0037] Figure 18 Shows a schematic assembly state diagram of the seam structure and the soft cushion layer connected by a hook-and-loop fastener in the second embodiment.

[0038] In the figure: 1. Seat; 11. Soft cushion layer; 113. First fixing groove; 1131. Groove; 114. Second fixing groove; 5. Seat cover; 51. Seam structure; 51a. Closed seam; 51b. Open seam; 51c. Folding part; 511. First seat cover section; 512. Second seat cover section; 513. Third seat cover section; 514. First bending section; 515. Second bending section; 516. Narrowing opening; 517. Closed loop; 52. First sewing thread; 53. Second sewing thread; 54. End sewing point; 55. First cut piece; 56. Second cut piece; 71a. Male hook-and-loop fastener; 72a. Female hook-and-loop fastener; 71b. Male snap; 72b. Female snap; 71c. C-shaped ring; 72c. Type bar; 8. Decorative backing. Detailed implementation mode

[0039] In order to solve the problem that the existing seats cannot meet the requirements of diverse surface design, the utility model provides a seat with an open seam, which can present an open seam on the seat cover to meet more styling options for the seat surface, and the open seam has a significant laminated thickness, and the three-dimensional effect is better. The seat with an open seam is further described below with specific embodiments combined with the accompanying drawings.

[0040] See also Figures 1 to 3 As shown, a seat 1 with an open seam includes a cushion layer 11 and a seat cover 5 covering the cushion layer 11, and the seat cover 5 is formed by splicing a plurality of cut pieces by stitching. The seat cover 5 is provided with at least one seam structure 51. The seam structure 51 includes at least one open seam 51b visible to the occupant and closed seams 51a located at both ends of the extending direction of the open seam 51b, that is, the number of the open seams 51b in the seam structure 51 can be set as needed, but the open seams 51b and the closed seams 51a are arranged in the form of a combination of one open seam 51b and two closed seams 51a. The open seam 51b and the closed seam 51a in the seam structure 51 are both formed by two opposite (preferably symmetrically arranged) S-shaped or Z-shaped folding portions 51c. The two folding portions 51c can be formed by folding a single-piece cut piece, or by folding and splicing a plurality of cut pieces, which will be described in detail below through two embodiments.

[0041] In the first embodiment, the two folding portions 51c are formed by folding a one-piece cut piece. Specifically, the folding portion 51c includes three overlapping first cover sections 511, second cover sections 512, and third cover sections 513, wherein the first cover sections 511 of the two folding portions 51c are formed as the same surface layer. When the seat 1 is occupied, the first cover section 511 is away from the human body, the third cover section 513 is close to the human body, and the second cover section 512 is located between the first cover section 511 and the third cover section 513. Each of the folding portions 51c also includes a first bending section 514 located between the second cover section 512 and the third cover section 513, and a portion of the two first bending sections 514 of the two folding portions 51c are spaced apart from each other to form the open seam 51b (such as Figure 3 As shown) and the other parts of the two first bending sections 514 are brought together to form the closed seam 51a (as shown Figure 2As shown). The close parts of the two first bending sections 514 are connected and fixed to each other. In this embodiment, the connection and fixation are achieved by sewing the second stitching line 53. The connection and fixation method is not limited to the sewing method. It can also be fixed by bonding and fusion. For example, when the seat cover 5 is a fabric, a fusion fixing method of ultrasonic welding can be used. Alternatively, the connection and fixation can be achieved by a combination of multiple fixing methods. In addition, each of the folding portions 51c also includes a second bending section 515 located between the first cover section 511 and the second cover section 512. The first cover section 511 and the second cover section 512 are connected and fixed to each other to shape the second bending section 515. In this embodiment, the connection and fixation is achieved by sewing the first stitching line 52. The connection and fixation method is also not limited to the sewing method. It can also be fixed by bonding and fusion. Alternatively, the connection and fixation can be achieved by a combination of multiple fixing methods.

[0042] Further Figures 4 to 6 As shown, the method of forming the seam structure 51 using a one-piece cut piece is as follows: first, the one-piece cut piece is flattened, and the center fold line L0 and the inverted fold lines L1a and L1b symmetrical to the center fold line L0 are located. Then, the cut piece is folded in half along the center fold line L0, and intermittently sewn using a second stitching line 53 at the position where the inverted fold lines L1a and L1b overlap. After the cut piece is intermittently sewn, a closed loop 517 is formed, and the closed loop 517 is symmetrically flattened along the center fold line L0 to obtain three overlapping first face cover sections 511, second face cover sections 512, and third face cover sections 513, and then the first face cover section 511 and the second face cover section 512 are continuously sewn using a first stitching line 52 to obtain two symmetrical folded portions 51c, and finally a combination of an open seam 51b and a closed seam 51a is formed, i.e., the seam structure 51.

[0043] After forming the seam structure 51 on the one-piece cut piece, the two opposite free ends of the one-piece cut piece (i.e., the free ends of the two third cover sections 513 away from the seam structure 51) are fixed to the cushion layer 11 respectively, so that the opening seam 51b is stretched open by stretching the third cover sections 513 of the two folded parts 51c in two opposite directions, so that the occupant can see it. With the restraint of the closed seams 51a at both ends of the opening seam 51b, the opening seam 51b will present a narrow and long willow leaf shape, so that the seam structure 51 as a whole can achieve a three-dimensional concave effect. As for the opening size of the opening seam 51b, it is mainly determined by adjusting the local size of the cut piece and the sewing length and sewing interval of the second seam line 53. In this embodiment, the material of the seat cover 5 is preferably PVC, PU, ​​fabric, etc. with good elasticity and easy stretching.

[0044] It should be noted that one or more slit structures 51 can be provided on the seat 1. Each slit structure 51 can extend in the same or different directions according to the requirements of its set position, and adopt a combination form of the same or different open slits 51b and closed slits 51a. For example Figure 1 As shown, two slit structures 51 are provided on the seat 1 in the figure. One is provided at the center of the cushion area of the seat 1, and the other is provided at the center of the backrest area of the seat 1. Both slit structures 51 are a combination of 2 open slits 51b and 3 closed slits 51a. One of the closed slits 51a is shared by the 2 open slits 51b because it is located between the 2 open slits 51b. The slit structure 51 formed by a one-piece cut piece can meet more styling options on the surface of the seat 1. By setting the open slits 51b, the movement space of the seat cover 5 can be increased, which has a certain effect on improving comfort. Moreover, the open slits 51b have an obvious laminated thickness and can show a better three-dimensional styling effect.

[0045] For the seat cover 5 with better elasticity, the two opposite free ends of the one-piece cut piece can be of equal width. However, for the seat cover 5 with poorer elasticity, in some preferred embodiments, the two opposite free ends of the one-piece cut piece can be of unequal width. Specifically, the distance from the edge of the free end corresponding to the closed slit 51a to L1a / L1b is the first width d1, and the distance from the edge of the free end corresponding to the open slit 51b to L1a / L1b is the second width d2. As Figure 4 shown, the second width d2 < the first width d1, that is, the two opposite free ends of the one-piece cut piece form an arc-shaped transition edge 516 that narrows inward at the position corresponding to each open slit 51b (which can be an arc-shaped transition edge directly formed by cutting, as Figure 4 shown), and two linear fixing paths are formed on the soft cushion layer 11. The two opposite free ends of the one-piece cut piece are respectively fixed along the edges to the two linear fixing paths to ensure that each open slit 51b can obtain sufficient stretching during fixing. Specifically, as Figure 7As shown, two second fixing grooves 114 extending along two linear fixing paths are formed in the soft cushion layer 11. Two opposite free ends of the one-piece cut piece are respectively fixed into the two second fixing grooves 114. For the case where other cut pieces need to be spliced at both ends of the one-piece cut piece, the adjacent other cut pieces can be fixed into the corresponding second fixing grooves 114 together. Preferably, in order to further improve the tensile force on the one-piece cut piece, the width d3 (i.e., 2 times d1) between the edges of the two free ends corresponding to the closed seam 51a can be set to be slightly smaller than the width d4 between the two second fixing grooves 114 (i.e., the two linear fixing paths). Further, in order to make the surface of the seat cover 5 smoother, the one-piece cut piece is sewn to itself at both ends corresponding to the seam structure 51 (i.e., the end stitching points 54 as shown in Figure 10 ), that is, the first seat cover section 511, the second seat cover section 512 and the third seat cover section 513 of the folding part 51c are sewn together along the cross-section direction.

[0046] In order to prevent the middle part of the one-piece cut piece from floating up and detaching from the soft cushion layer 11 when the one-piece cut piece is stretched and tightened, in some embodiments, a first fixing groove 113 for accommodating and fixing the two folding parts 51c is provided on the soft cushion layer 11 at a position corresponding to the seam structure 51. A first fixing member is fixed in the first fixing groove 113, and a second fixing member for connecting to the first fixing member is fixed on the first seat cover section 511. Through the arrangement of the first fixing member and the second fixing member, the one-piece cut piece is fixed to the soft cushion layer 11 not only at the two free ends but also at the seam structure 51, so that the one-piece cut piece can wrap around the soft cushion layer 11 more fittingly.

[0047] Preferably, the number of the second fixing members is two, and they are respectively arranged at a pair of first sewing lines 52. Grooves 1131 are provided at positions on the first fixing groove 113 facing a pair of second bending sections 515. The first fixing members are fixed in both of the two grooves 1131. By connecting the two groups of the first fixing members and the second fixing members respectively, the fixed connection between the seam structure 51 formed by the one-piece cut piece and the soft cushion layer 11 is realized. Among them, the combination of the first fixing member and the second fixing member can be in the forms of a hook-and-loop component, a snap component, a C-ring plus strip component, etc. The two groups of the first fixing members and the second fixing members can adopt the same component form or different component forms. Specific examples are described through the following two embodiments:

[0048] Example 1: Refer to Figure 7 and Figure 8As shown, both of the two first fixing members are male hook tapes 71a, and both of the two second fixing members are female hook tapes 72a. The two male hook tapes 71a are respectively adhered and fixed in the two grooves 1131. The two female hook tapes 72a are both in a C shape and relatively cover the pair of second bending sections 515. The first face sleeve section 511, the second face sleeve section layer 512 and the two female hook tapes 72a are respectively connected and fixed by sewing threads. By respectively bringing the two groups of male hook tapes 71a and female hook tapes 72a into corresponding contact and bonding and fixing them, the fixed connection between the seam structure 51 formed by the one-piece cut piece and the soft cushion layer 11 is realized.

[0049] Example 2: Refer to Figure 9 As shown, in this example, one of the first fixing members is a male snap 71b, and the corresponding second fixing member is a female snap 72b. The other first fixing member is a C-shaped ring 71c, and the corresponding other second fixing member is a strip 72c. The first face sleeve section 511, the second face sleeve section 512 and the female snap 72b are connected and fixed by sewing threads at a second bending section 515. The first face sleeve section 511, the second face sleeve section 512 and the strip 72c are connected and fixed by sewing threads at another second bending section 515. The male snap 71b and the C-shaped ring 71c are respectively fixed in the corresponding grooves 1131. By respectively snap-fixing the male snap 71b and the female snap 72b, and snap-fixing the C-shaped ring 71c and the strip 72c, the fixed connection between the middle part of the one-piece cut piece and the soft cushion layer 11 is realized.

[0050] It should be noted that, no matter which embodiment it is, the same surface layer formed by the first face sleeve sections 511 of the two folding parts 51c remains at least partially closely attached to the bottom of the first fixing groove 113. In addition, the fixing form of the two opposite free ends of the one-piece cut piece and the second fixing groove 114 on the soft cushion layer 11 can also adopt the combined structure of the above first fixing member and second fixing member. In some embodiments, refer to Figures 10 to 12As shown, the seat 1 also includes a decorative backing 8 sandwiched between the first cover section 511 and the second cover section 512, and the two sides of the decorative backing 8 are respectively fixedly connected to the first cover section 511 and / or the second cover section 512 of the two folding portions 51c. Specifically, the decorative backing 8 can be sewn and fixed to the first cover section 511 and the second cover section 512 together by using the first stitching 52. The decorative backing 8 has an appearance that is different from at least one of the texture, color, and pattern of the seat cover 5. When the seat 1 needs to display additional decoration or texture at the opening seam 51b, this embodiment can be adopted to fix the corresponding decorative backing 8 between the first cover section 511 and the second cover section 512. When the seat cover 5 is installed on the cushion layer 11, as the opening seam 51b is opened, the appearance of the decorative backing 8 can be displayed through the opening seam 51b, as shown in FIG. Figure 10 As shown, the appearance effect can be richer.

[0051] In the second embodiment, the seam structure 51 is formed by folding three pieces of cut pieces. Figure 1 , Figures 13 to 18 As shown, compared with the first embodiment, the folding portion 51c of the seam structure 51 in this embodiment also includes three overlapping first cover segments 511, second cover segments 512 and third cover segments 513. The difference is that, the second cover segment 512 and the third cover segment 513 of each folding portion 51c are formed by folding a first panel 55, and the first cover segment 511 is provided by the second panel 56, and the two folding portions 51c include two first panels 55 and one second panel 56, and the first covers 511 of the two folding portions 51c share the same second panel 56. Each of the folding portions 51c also includes a first bending segment 514 located between the second cover segment 512 and the third cover segment 513, and a portion of the two first bending segments 514 of the two folding portions 51c are spaced apart from each other to form the open seam 51b (as shown in FIG. 1 ). Figure 14 As shown) and the other part of the two first bending sections 514 are close together to form the closed seam 51a (as shown Figure 13 The two first bending sections 514 are connected and fixed to each other in the same manner as in the first embodiment, which will not be described in detail here. The first cover section 511 is laid flat below the two second cover sections 512, and the free ends of the first cover section 511 and the second cover section 512 are connected and fixed to each other by first stitches 52. The connection and fixing manner is also not limited to the suturing manner, and can also be fixed by bonding and fusing, or can also be achieved by a combination of multiple fixing manners.

[0052] Further cooperation Figures 15 to 17As shown, the method of forming the seam structure 51 using three-piece cut pieces is as follows: First, provide two first cut pieces 55 and lay them flat, one on the left and one on the right. Then, respectively position the first binding lines L2a and L2b, and the second binding lines L3a and L3b on the relatively inner sides of the two first cut pieces 55. Among them, the first binding lines L2a and L2b have the same width from the edge, the second binding lines L3a and L3b have the same width from the edge, and the width of the first binding lines L2a and L2b from the edge is less than the width of the second binding lines L3a and L3b from the edge. Then, respectively fold the two first cut pieces 55 along the two second binding lines L3a and L3b to form two first bending sections 514, and use the second sewing thread 53 to intermittently sew the two first bending sections 514 to combine the two first cut pieces 55, forming the second face cover section 512 and the third face cover section 513 as shown in Figure 17 After that, provide a second cut piece 56, and respectively position two third binding lines L2c and L2d at positions with a certain width from the edge on the relatively outer side of the second cut piece 56. Lay the second cut piece 56 flat under the second face cover section 512, and then use the first sewing thread 52 to continuously sew the two first binding lines L2a and L2b to the two third binding lines L2c and L2d respectively to combine the two first cut pieces 55 with the second cut piece 56 and form two symmetrical folding parts 51c, finally forming a combination of an open seam 51b and a closed seam 51a, that is, the seam structure 51.

[0053] After forming the seam structure 51, fix the free ends of the two first cut pieces 55 on the relatively outer sides (i.e., the free ends of the two third face cover sections 513 away from the seam structure 51) to the soft cushion layer 11 respectively, so as to open the open seam 51b by stretching the third face cover sections 513 of the two folding parts 51c in two opposite directions. The specific fixing method is the same as that in the first embodiment. It should be noted that in order to give the open seam 51b sufficient stretching when the seat cover 5 is fixed on the soft cushion layer 11, the two first cut pieces 55 can be set to have unequal widths. The unequal width can be realized based on the free ends of the two first cut pieces 55 on the relatively outer sides, that is, form an arc-shaped transition edge that narrows inward at the position corresponding to each open seam 51b at the free ends of the two third face cover sections 513 away from the seam structure 51, and fix the arc-shaped transition edge to the linear fixing path to increase the tensile force on the open seam 51b. The unequal width can also be realized based on the free ends of the two first cut pieces 55 on the relatively inner sides, that is, using the same principle, set the arc-shaped transition edge at the free ends of the two second face cover sections 513 away from the seam structure 51. Specific cooperation Figure 16As shown, taking the first cut piece 55 on the right side as an example, the distance from the left edge of the first cut piece 55 corresponding to the closed seam 51a to the second binding line L3b is the fifth width d5, and the distance from the left edge of the first cut piece 55 corresponding to the open seam 51b to the second binding line L3b is the sixth width d6, and the sixth width d6 < the fifth width d5.

[0054] In this embodiment, the second cut piece 56 is arranged in a penetrating manner to cooperate with the two first cut pieces 55 to jointly form the seam structure 51. Although this method is a bit more complex than the first embodiment in terms of steps when forming the seam structure 51, for the second embodiment, there is no need to additionally arrange a decorative backing. The second cut piece 56 can simultaneously serve as the decorative backing. In the application scenarios where a decorative backing needs to be arranged, only the appearance of the second cut piece 56 needs to be set to the appearance to be displayed, which is different from the appearance of the first cut piece 55. Moreover, the second cut piece 55 in this embodiment is arranged in a penetrating manner, and the formed seam structure also has an obvious laminated thickness, and can show a better three-dimensional modeling effect.

[0055] The above has described the present invention in detail in combination with the embodiments of the drawings. Those of ordinary skill in the art can make various variations to the present invention according to the above description. Therefore, some details in the embodiments should not constitute a limitation to the present invention, and the protection scope of the present invention will be defined by the scope defined in the appended claims.

Claims

1. A seat with an opening slit, comprising a soft cushion layer and a seat cover covering the soft cushion layer, characterized in that, The seat cover comprises at least one open seam visible to an occupant and closed seams located at two ends of the extending direction of the open seam.

2. The seat with an opening slit as claimed in claim 1, wherein The open seam and the closed seam are formed by two opposite S-shaped or Z-shaped folded parts.

3. The seat with an opening slit according to claim 2, characterized in that, The two folded portions are arranged symmetrically to each other.

4. The seat with an opening slit according to claim 2, characterized in that, Each of the folding portions includes three overlapping first cover sections, a second cover section, and a third cover section. When the seat is occupied, the first cover section is away from the human body, the third cover section is close to the human body, and the second cover section is located between the first cover section and the third cover section.

5. The seat with an opening slit as claimed in claim 4, wherein, Each of the folding portions further comprises a first bending section between the second cover section and the third cover section, a portion of the two first bending sections of the two folding portions are spaced apart from each other to form the open seam, and another portion of the two first bending sections are close together to form the closed seam.

6. The seat with an opening slit as claimed in claim 5, wherein The other parts of the two first bending sections are connected and fixed to each other to form the closed seam, and the connection and fixing method includes any one or more of suturing, bonding, and fusing.

7. The seat with an opening slit as claimed in claim 5, wherein The free ends of the two third cover sections away from the opening seam are respectively fixed to the cushion layer so as to stretch the two third cover sections in two opposite directions to open the opening seam.

8. The seat with an opening slit as claimed in claim 7, wherein The free ends of the two third cover sections away from the opening seam are formed with arc-shaped transition edges that narrow inwardly corresponding to the position of each opening seam, and two straight second fixing grooves are formed on the cushion layer. The free ends of the two third cover sections away from the opening seam are respectively fixed to the two second fixing grooves to allow the opening seam to obtain sufficient stretching.

9. The seat with an opening slit according to claim 4, characterized in that, The cushion layer is provided with a first fixing groove for accommodating and fixing the folding part.

10. The seat with an opening slit as described in claim 9, characterized in that, The first cover section and / or the second cover section of the folded portion are fixed to the first fixing groove by any one or more of Velcro, buckles, and C-shaped rings.

11. The seat with an opening slit according to claim 4, characterized in that, The first cover section, the second cover section and the third cover section are formed by folding a one-piece panel.

12. The seat with an opening slit according to claim 11, characterized in that, Each of the folding portions further comprises a second bending section located between the first cover section and the second cover section, the first cover section and the second cover section are connected and fixed to each other to shape the second bending section, and the connection and fixing method comprises any one or more of sewing, bonding, and fusing.

13. The seat with an opening slit as claimed in claim 11, wherein, It also includes a decorative backing sandwiched between the first cover section and the second cover section, and two sides of the decorative backing are respectively fixedly connected to the first cover section and / or the second cover section of the two folding parts.

14. The seat with an opening slit according to claim 4, characterized in that, The second cover section and the third cover section of each folded portion are formed by folding a first panel, the first cover section is provided by a second panel, and the two folded portions include two first panels and one second panel.

15. The seat with an opening slit as described in claim 14, characterized in that, The appearance of the second panel is different from the appearance of the first panel.

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