JP2025052773A - Skin tucking structure and vehicle seat - Google Patents

Abstract

To suppress generation of wrinkles on a skin in a structure in which a hard material fixed to the tip side of tucking cloth is shorter than the tucking cloth.SOLUTION: In this skin tucking structure, a tucking part 26A of a cushion skin 26 is disposed in a tucking groove 24 of a cushion pad 22, and an unwoven slit 38 fixed to the tucking part 26A is locked to an insert wire 44 by a hog ring 42. The skin tucking structure comprises: a first hard material 46 that is made of a material harder than the unwoven slit 38 as tucking cloth and formed shorter than the unwoven slit 38 in the longitudinal direction of the unwoven slit 38, and that is fixed to the unwoven slit 38 on the tip side of the unwoven slit 38; and a second hard material 48 that is made of a material harder than the unwoven slit 38 and formed equal to or longer than the first hard material 46 and that is fixed to the unwoven slit 38 closer to the base end side of the unwoven slit 38 than the first hard material 46.SELECTED DRAWING: Figure 4

Description

The present invention relates to vehicle seats, and in particular to a seat cover hanging structure.

The following Patent Document 1 discloses a trim cord (hanging cloth) that is fixed to a fixed wire within a hanging groove of a pad member when hanging a cover member of a vehicle seat. The hanging cloth is made of nonwoven fabric, and the slightly expanded tip is fixed to the fixed wire by a hog ring.

JP 2016-112179 A

In the above prior art, the tip of the hanging cloth is somewhat expanded for reinforcement, but in some cases, a hard material such as a plastic plate is fixed to the tip of the hanging cloth for reinforcement. Also, a heater may be provided in the pad member, and if such a hard material comes into contact with the heater, the heater may break. For this reason, for example, the length of the hard material is set shorter than the length of the hanging cloth so that the hard material does not overlap with the heater. However, if the hard material is shortened, the hanging range of the hanging cloth becomes narrow, and the hanging of the end of the hanging cloth becomes unstable, which causes wrinkles to occur in the skin.

The present invention takes the above facts into consideration and aims to provide a skin hanging structure and a vehicle seat that can prevent wrinkles from occurring in the skin even if the hard material fixed to the tip side of the hanging cloth is shorter than the hanging cloth.

The first aspect of the hanging structure of the upholstery is a cushion material for a vehicle seat, and includes a pad material having a hanging groove formed therein and a wire embedded in the bottom of the hanging groove, a upholstery having a long hanging part that covers the pad material and is placed in the hanging groove, a long hanging cloth that is fixed to the hanging part and is fastened to the wire by a fastening device, a first hard material that is made of a material harder than the hanging cloth and shorter in the longitudinal direction of the hanging cloth than the hanging cloth and fastened to the hanging cloth at the tip side of the hanging cloth, and a second hard material that is made of a material harder than the hanging cloth and has a length equal to or greater than the first hard material and fastened to the hanging cloth at the base end side of the hanging cloth than the first hard material.

According to the first aspect of the hanging structure of the upholstery, the padding constituting the cushioning material of the vehicle seat has a hanging groove formed therein, and a wire is embedded in the bottom of the hanging groove. The upholstery covered by the padding has a long hanging section disposed within the hanging groove. The hanging cloth fixed to the hanging section is hooked to the wire by a hook. A first hard material formed from a material harder than the hanging cloth and shorter in the longitudinal direction of the hanging cloth than the hanging cloth is hooked to the hanging cloth at the tip side of the hanging cloth. A second hard material formed from a material harder than the hanging cloth and with a length equal to or greater than the first hard material is hooked to the hanging cloth at the base end side of the hanging cloth than the first hard material. As a result, even if the first hard material fixed to the tip of the hanging cloth is shorter than the hanging cloth, the hanging cloth is reinforced by the second hard material that is equal to or longer than the first hard material, making it possible to prevent wrinkles from occurring on the surface.

The second aspect of the skin hanging structure is the first aspect, in which the second hard material is fixed to the hanging cloth closer to the base end of the hanging cloth than the fastener.

According to the second aspect of the skin hanging structure, the second hard material, which is longer than the first hard material, is fixed to the hanging cloth on the base end side of the hanging cloth (i.e., the skin side) of the fastener. This allows the hanging cloth to be reinforced by the second hard material near the skin, making it possible to effectively prevent wrinkles from occurring in the skin.

The third aspect of the skin hanging structure is the second aspect, in which the second hard material is fixed to the fixing part of the hanging cloth that is connected to the hanging part.

According to the third aspect of the skin hanging structure, the second hard material, which is longer than the first hard material, is fixed to the fixing portion of the hanging cloth that is connected to the hanging portion of the skin. This allows the hanging cloth to be reinforced by the second hard material closer to the skin, making it possible to more effectively prevent wrinkles from occurring in the skin.

The fourth aspect of the skin hanging structure is any one of the first to third aspects, in which electrical components are disposed on the padding material at a location that does not overlap the first hard material in the thickness direction of the padding material and overlaps the second hard material in the thickness direction.

According to the fourth aspect of the skin hanging structure, electrical components are arranged on the padding material. The electrical components are arranged at a location that does not overlap the first hard material fixed to the tip end side of the hanging cloth in the thickness direction of the padding material, and overlaps the second hard material fixed to the hanging cloth closer to the base end side of the hanging cloth than the first hard material in the thickness direction of the padding material. This prevents the first hard material and the second hard material from coming into contact with the electrical components, thereby preventing disconnection of the electrical components due to such contact.

The vehicle seat of the fifth aspect includes a seat cushion on which an occupant sits and a seat back that supports the back of the occupant, and at least one of the seat cushion and the seat back has a hanging structure according to any one of the first to fourth aspects.

In the vehicle seat of the fifth aspect, the back of the occupant seated on the seat cushion is supported by the seat back. The suspension structure of at least one of the seat cushion and the seat back is one of the first to fourth aspects, so that the above-mentioned effects can be obtained.

As described above, according to the present invention, even if the hard material fixed to the tip side of the nonwoven fabric slit is shorter than the nonwoven fabric slit, it is possible to prevent wrinkles from occurring on the surface.

1 is a perspective view showing a vehicle seat according to a first embodiment. FIG. 2 is a perspective view showing a state in which an illustration of a cover is omitted in a seat cushion of the vehicle seat according to the first embodiment. FIG. 4 is a perspective view showing a configuration of a seat heater and a nonwoven fabric slit of the seat cushion and the surrounding area thereof. FIG. 4 is a cross-sectional view showing a cut surface along line F4-F4 in FIG. 1. 5 is a cross-sectional view showing a cut surface taken along line F5-F5 in FIG. 4. 5 is a cross-sectional view corresponding to FIG. 4 and showing a part of a seat cushion of a vehicle seat according to a second embodiment. FIG. 7 is a cross-sectional view showing a cut surface along line F7-F7 in FIG. 6.

First Embodiment
A vehicle seat 10 according to a first embodiment of the present invention will be described below with reference to Figures 1 to 5. Note that in each figure, some reference numerals may be omitted in order to make the drawings easier to see. Arrows FR, LH, and UP, which are appropriately written in each figure, respectively indicate the front, left, and top of the vehicle seat 10. In the following description, when the front-rear, left-right, top-bottom directions are used, they will indicate directions relative to the vehicle seat 10.

As shown in FIG. 1, the vehicle seat 10 according to this embodiment is, as an example, a front seat of a vehicle, and includes a seat cushion 12 on which an occupant sits, a seat back 14 that supports the occupant's back, and a headrest 16 that supports the occupant's head. The seat cushion 12 is connected to the floor of the vehicle (not shown) via a well-known sliding mechanism 18. The lower end of the seat back 14 is connected to the rear end of the seat cushion 12 via a well-known reclining mechanism 20. The headrest 16 is connected to the upper end of the seat back 14 so that its vertical position can be adjusted.

The seat cushion 12 includes a cushion frame (not shown), a cushion pad 22 (see FIG. 2) which is a padding material supported by the cushion frame, a cushion skin 26 (see FIG. 1, FIG. 4, and FIG. 5) which is a skin covering the cushion pad 22, and a seat heater 36 disposed between the cushion pad 22 and the cushion skin 26.

The cushion frame is formed by joining, for example, press-formed metal plates or metal pipes, and forms the skeleton of the seat cushion 12. The cushion pad 22 is formed by, for example, a foam such as urethane foam, and forms the cushioning material of the seat cushion 12. The cushion skin 26 is formed into a bag shape by sewing multiple skin pieces made of, for example, cloth, leather, synthetic leather, etc., and is placed over the cushion pad 22 from above. The seat heater 36 is formed into a film shape by laminating a wire-, sheet-, or film-shaped heater body that can generate heat when electricity is applied. This seat heater 36 corresponds to the "electrical component" in this invention.

As shown in FIG. 2, the cushion pad 22 has a main portion 22M that supports the occupant's buttocks and thighs from below, and left and right side support portions 22S that support the occupant's buttocks and thighs from the sides. The main portion 22M has two front and rear hanging grooves 24 that extend in the left-right direction, and these two hanging grooves 24 divide the main portion 22M into a front portion 22MF, a front-rear middle portion 22MS, and a rear portion 22MR.

The seat heater 36 has a front heater 36F arranged on the upper surface of the front portion 22MF, an intermediate heater 36S arranged on the upper surface of the middle portion in the front-rear direction, and a rear heater 36R arranged on the upper surface of the rear portion 22MR. The front heater 36F and the intermediate heater 36S are connected by a pair of left and right connecting parts 36C. Similarly, the intermediate heater 36S and the rear heater 36R are connected by a pair of left and right connecting parts 36C. The left and right connecting parts 36C are provided at both left and right ends of the seat heater 36, are spaced apart from each other in the left-right direction, and are bent in a U-shape when viewed from the left and right direction. The left and right connecting parts 36C connecting the front heater 36F and the intermediate heater 36S are arranged in the front hanging groove 24, and the left and right connecting parts 36C connecting the intermediate heater 36S and the rear heater 36R are arranged in the rear hanging groove 24.

As shown in Figures 4 and 5, the hanging portion 26A of the cushion skin 26 is disposed in the rear hanging groove 24. In the hanging portion 26A, two skin pieces 28, 30 that form part of the cushion skin 26 are sewn at a sewing portion 32. In this hanging portion 26A, the seam of the skin piece 28 and the seam of the skin piece 30 are folded downward and overlapped in the front-to-rear direction. This hanging portion 26A is formed long in the left-to-right direction.

A nonwoven fabric slit 38, which is a hanging cloth, is fixed to the hanging portion 26A. The nonwoven fabric slit 38 is made of nonwoven fabric and has a long strip shape with the left-right direction as the longitudinal direction, the up-down direction as the width direction, and the front-rear direction as the thickness direction. The longitudinal dimension of the nonwoven fabric slit 38 is set to be slightly shorter than the longitudinal dimension of the hanging portion 26A. The material of the hanging cloth is not limited to nonwoven fabric, and may be any cloth-like material.

The upper end (one end in the width direction; base end) of the nonwoven fabric slit 38 is sewn together with the hanging portion 26A at the sewing portion 32 described above. A plurality of (three in this example) insertion holes 40 are formed in the vertical middle portion of the nonwoven fabric slit 38. The plurality of insertion holes 40 are arranged at intervals in the left-right direction. A hog ring 42, which is a locking device, is inserted into each insertion hole 40. Each hog ring 42 is wound around an insert wire 44 embedded in the bottom of the hanging groove 24. As a result, the nonwoven fabric slit 38 is locked to the insert wire 44 via the plurality of hog rings 42. The insert wire 44 corresponds to the "wire" in the present invention, and is embedded in the cushion pad 22 by, for example, integral foam molding. The locking device is not limited to the hog ring 42, but may be, for example, a resin clip.

A first hard material 46 is fixed to the lower end (the other end in the width direction; the tip) of the nonwoven fabric slit 38. The first hard material 46 is made of a material (e.g., a resin material) harder than the nonwoven fabric slit 38 and has an elongated shape with the left-right direction as the length. The first hard material 46 is fixed to the nonwoven fabric slit 38 by means of, for example, sewing, gluing, or other means. The first hard material 46 is arranged on the tip side (here, the lower end side) of the nonwoven fabric slit 38 from the multiple insertion holes 40. The first hard material 46 is formed shorter in the left-right direction than the nonwoven fabric slit 38 and is provided on the left-right center side of the nonwoven fabric slit 38. The first hard material 46 is not provided at both left-right ends of the nonwoven fabric slit 38.

A second hard material 48 is fixed to the nonwoven fabric slit 38 on the base end side (here, the upper end side) of the nonwoven fabric slit 38 from the first hard material 46. The second hard material 48 is made of a material (e.g., a resin material) harder than the nonwoven fabric slit 38 and has an elongated shape with the left-right direction as the longitudinal direction. The second hard material 48 is sewn together with the hanging portion 26A and the nonwoven fabric slit 38 in a sewing portion 34 separate from the sewing portion 32 described above. In other words, the second hard material 48 is fixed to the fixing portion with the hanging portion 26A in the nonwoven fabric slit 38. This sewing portion 34 is located slightly lower than the sewing portion 32 described above (the tip side of the nonwoven fabric slit 38).

The second hard material 48 is disposed closer to the base end side (here, the upper end side) of the nonwoven fabric slit 38 than the multiple insertion holes 40. The second hard material 48 is formed slightly shorter in the left-right direction than the nonwoven fabric slit 38, and is formed to the same length as the first hard material 46 (here, longer in the left-right direction than the first hard material 46). As shown in FIG. 4, the connection portion 36C of the seat heater 36, which is an electrical component, is disposed in the cushion pad 22 at a location that does not overlap the first hard material 46 in the thickness direction (here, the vertical direction) of the cushion pad 22 and overlaps the second hard material 48 in the thickness direction. The cushion pad 22, the cushion skin 26, the nonwoven fabric slit 38, the first hard material 46, and the second hard material 48 constitute the "skin hanging structure" in the present invention. Although not shown, the same skin hanging structure as described above is also adopted in the front hanging groove 24 of the cushion pad 22.

According to the vehicle seat 10 configured as described above, the cushion pad 22 constituting the cushion material of the seat cushion 12 has a hanging groove 24 formed therein, and an insert wire 44 is embedded in the bottom of the hanging groove 24. The cushion cover 26 covering the cushion pad 22 has a long hanging portion 26A disposed within the hanging groove 24. The nonwoven fabric slit 38 fixed to the hanging portion 26A has an insertion hole 40 through which a plurality of hog rings 42 are inserted, and is engaged with the insert wire 44 by these hog rings 42.

The first hard material 46, which is made of a harder material than the nonwoven fabric slit 38 and is shorter in the left-right direction than the nonwoven fabric slit 38, is fixed to the nonwoven fabric slit 38 at the tip side of the nonwoven fabric slit 38. The second hard material 48, which is made of a harder material than the nonwoven fabric slit 38 and is equal to or longer than the first hard material 46, is fixed to the nonwoven fabric slit 38 at the base end side of the nonwoven fabric slit 38 than the first hard material 46. As a result, even if the first hard material 46 fixed to the tip side of the nonwoven fabric slit 38 is shorter than the nonwoven fabric slit 38, the nonwoven fabric slit 38 is reinforced by the second hard material 48, which is equal to or longer than the first hard material 46, so that it is possible to suppress the occurrence of wrinkles in the cushion cover 26 at the left-right end side of the hanging portion 26A.

In addition, in this embodiment, the second hard material 48, which is longer than the first hard material 46, is fixed to the nonwoven fabric slit 38 on the base end side of the nonwoven fabric slit 38 (i.e., the cushion skin 26 side) rather than the hog ring 42. This allows the nonwoven fabric slit 38 to be reinforced by the second hard material 48 near the cushion skin 26, making it possible to effectively prevent wrinkles from occurring in the cushion skin 26.

Furthermore, in this embodiment, the second hard material 48, which is longer than the first hard material 46, is fixed to the fixed portion of the nonwoven fabric slit 38 with the hanging portion 26A of the cushion skin 26. As a result, the nonwoven fabric slit 38 is reinforced by the second hard material 48 closer to the cushion skin 26, so that the occurrence of wrinkles in the cushion skin 26 can be more effectively suppressed.

In addition, in this embodiment, the connection portion 36C of the seat heater 36 disposed on the upper surface of the cushion pad 22 is disposed at a location that does not overlap the first hard material 46 fixed to the tip side of the nonwoven fabric slit 38 in the thickness direction of the cushion pad 22, and overlaps the second hard material 48 fixed to the nonwoven fabric slit 38 on the base end side of the nonwoven fabric slit 38 closer to the base end side of the nonwoven fabric slit 38 than the first hard material 46 in the thickness direction of the cushion pad 22. This prevents the first hard material 46 and the second hard material 48 from coming into contact with the connection portion 36C of the seat heater 36, thereby preventing disconnection of the seat heater 36 due to such contact.

Second Embodiment
Next, a second embodiment of the present invention will be described. Note that the same reference numerals as in the first embodiment are given to the configurations and operations that are basically the same as those in the first embodiment, and the description thereof will be omitted.

Figure 6 shows a cross-sectional view corresponding to Figure 4 of a portion of a seat cushion of a vehicle seat according to the second embodiment. Figure 7 shows a cross-sectional view of a cut surface along line F7-F7 in Figure 6. In this embodiment, the second hard material 48 is not fixed to the fixing portion between the hanging portion 26A of the cushion cover 26 and the nonwoven fabric slit 38, and is fixed closer to the tip side of the nonwoven fabric slit 38 than the hanging portion 26A. This second hard material 48 is positioned closer to the base end side of the nonwoven fabric slit 38 than the multiple insertion holes 40 of the nonwoven fabric slit 38.

In this embodiment, the configuration other than the above is the same as in the first embodiment. In this embodiment, the nonwoven fabric slit 38 is reinforced by the second hard material 48, which is longer than the first hard material 46, so that it is possible to prevent wrinkles from occurring in the cushion cover 26 at the left and right ends of the hanging portion 26A.

In each of the above embodiments, the second hard material 48 is arranged closer to the base end of the nonwoven fabric slit 38 (hanging cloth) than the hog ring 42 (fastening device), but the present invention is not limited to this. The second hard material 48 may be arranged in an area where it overlaps the fastening device in the thickness direction of the hanging cloth.

In addition, in each of the above embodiments, the "skin hanging structure" according to the present invention is applied to the seat cushion 12, but this is not limiting, and the "skin hanging structure" according to the present invention may be applied to the seat back 14.

The present invention can be modified in various ways without departing from the spirit of the invention. It goes without saying that the scope of the invention is not limited to the above-mentioned embodiments.

10 Vehicle seat 12 Seat cushion 14 Seat back 22 Cushion pad (pad material)
26 Cushion cover (cover)
26A Hanging part 36 Seat heater (electrical component)
38 Nonwoven fabric slit (hanging fabric)
42 Hog ring (fastening device)
44 Insert wire (wire material)
46 First hardwood 48 Second hardwood

Claims (5)

A padding material that constitutes a cushioning material for a vehicle seat, the padding material having a hanging groove formed therein and a wire embedded in a bottom portion of the hanging groove;
a cover having a long hanging portion that is placed on the padding material and in the hanging groove;
A long hanging cloth is fixed to the hanging portion and is hooked to the wire by a hook;
A first hard member is made of a material harder than the hanging cloth, is shorter than the hanging cloth in the longitudinal direction of the hanging cloth, and is fixed to the hanging cloth at the tip side of the hanging cloth;
A second hard material is made of a material harder than the hanging cloth, has a length equal to or greater than that of the first hard material, and is fixed to the hanging cloth at a base end side of the hanging cloth relative to the first hard material;
A hanging structure for the skin. The skin hanging structure according to claim 1, wherein the second hard material is fixed to the hanging cloth closer to the base end of the hanging cloth than the fastener. The hanging structure according to claim 2, wherein the second hard material is fixed to a fixing portion of the hanging cloth that is connected to the hanging portion. The suspension structure according to claim 1 or 2, wherein electrical components are disposed on the padding material at locations that do not overlap the first hard material in the thickness direction of the padding material and overlap the second hard material in the thickness direction. A seat cushion on which an occupant sits;
A seat back that supports the back of the occupant;
Equipped with
3. A vehicle seat, wherein at least one of the seat cushion and the seat back has the hanging structure according to claim 1.