JP5545049B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat having a frame member and a support member (a member capable of supporting an occupant) that can be attached to the frame member.

As this type of vehicle seat, a vehicle seat disclosed in Patent Document 1 is known. This vehicle seat has a seat cushion and a seat back.
The seat back includes a frame member that forms a seat frame and a support member that can be attached to the frame member. This support member is a member that can support an occupant, and includes a planar body, a support plate, and a side support portion.
The planar body is a planar member that can elastically expand and contract. The support plate is a member having an approximately L shape in a cross-sectional view, and can be attached to an end portion of the planar body. And a side support part is a site | part which can support a passenger | crew side part, and has a pad material and a skin material.

In the known technique, the plate member is screwed to the frame member while the planar member is disposed on the seating side of the frame member, thereby attaching the support member to the frame member.
Next, side support portions are disposed on both sides of the planar body. At this time, the pad material is covered with the skin material while the pad material is disposed on the side of the planar body. Then, one end side of the skin material is sewn to the planar body (sitting side), and the other end side of the skin material is attached to the frame member (rear side different from the seating side).
In the known technique, the occupant side portion can be supported by supporting the occupant with the planar body and the side support portion protruding at the seat side position.

JP-A-10-327972

By the way, in a well-known technique, since a planar body and the side support part are separate bodies, the number of parts of the vehicle seat was a somewhat large and complicated structure. Further, in the work of attaching the support member, it is necessary to sew the side support part to the planar body (the connection work is essential), and the workability is slightly inferior.
Further, in the known technique, since the side support portion and the sewn portion of the planar body are exposed to the outside, it is not a configuration that can be easily adopted in consideration of various sheet performances (designability, durability, etc.).
The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to attach a simpler support member to a frame member with good workability while maintaining seat performance as much as possible. .

As means for solving the above-mentioned problems, the vehicle seat of the first invention has a seat constituent member such as a seat cushion or a seat back.
The seat constituent member includes a frame member forming a seat skeleton and a support member capable of supporting an occupant, and the support member is attached to the frame member. In this type of seat configuration, it is preferable that a simpler support member can be attached to the frame member with good workability while maintaining seat performance as much as possible.

So, in this invention, the above-mentioned support member has a planar body which consists of a textile fabric or a knitted fabric which can support a passenger | crew, and a frame-shaped body which can attach a planar body in the tension state.
In addition, a single layer part consisting of a single surface part and a multilayer part consisting of double surface parts continuously connected to the single layer part can be formed on the planar body, and other members such as pad materials can be stored in the multilayer part. It was.
In the present invention, since the single layer portion and the multilayer portion are formed continuously (formed as a simple integrated product), the connecting operation of both layer portions can be omitted. And according to this invention, a support part can be formed in a support member comparatively easily, for example by accommodating a pad material in a multilayer part.
Furthermore, in the vehicle seat of the first invention, the first surface portion and the second surface portion forming the above-described multilayer portion are respectively the first component yarn and the second component yarn that is more elastically contractible than the first component yarn. Have.
And in this invention, the 1st surface part has more 2nd component yarns than a 2nd surface part, and the load concerning a seating side is latched by latching inside a sheet | seat rather than a 2nd surface part. It was set as the structure transmitted to a site | part efficiently. In the present invention, since the second surface portion includes a relatively large amount of the first constituent yarn, the design of the sheet can be maintained relatively favorably.

The vehicle seat of the second invention is the vehicle seat of the first invention, and forms a multilayer portion at the end of the planar body. And the 1st surface part and 2nd surface part which make a multilayer part can be separately attached to a frame member or a frame-shaped body.
Therefore, in the present invention, the first surface portion is attached to the frame member. And it was set as the structure which attaches the 2nd surface part to the site | part different from the latching site | part of a 1st surface part, covering the latching site | part of a 1st surface part with a 2nd surface part (hiding).

According to a third aspect of the present invention, there is provided a vehicle seat according to the first or second aspect of the present invention, wherein the above-mentioned planar body is disposed between the single layer portion and the multi-layer portion and is continuously provided on both portions. It has a continuous boundary.
The boundary portion has higher rigidity than the single layer portion. Thus, by connecting the single layer portion and the multilayer portion at the boundary portion having excellent rigidity, the separation between the single layer portion and the multilayer portion can be prevented or reduced.

According to the first aspect of the present invention, a simpler support member can be attached to the frame member with good workability while maintaining the seat performance as much as possible. Further, according to the first invention, it is possible to obtain a sheet configuration that is further excellent in various sheet performances. In addition, according to the second aspect of the invention, it is possible to obtain a sheet configuration that is more excellent in design. And according to 3rd invention, it can be set as the sheet | seat structure which is more excellent in durability.

It is a perspective view of a vehicle seat. It is a perspective view of a frame and a support member before assembling. It is a perspective view of the flame | frame and support member after an assembly | attachment. It is a perspective view of a part of the seat back. It is a perspective view of a planar body. It is a cross-sectional view of a seat back. It is an organization chart of a single layer part. It is an organization chart of a boundary part. It is an organization chart of a multilayer part.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS.
In FIG. 1 to FIG. 6, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B is attached to the rear of the vehicle seat, a reference symbol UP is provided above the vehicle seat, and a reference symbol DW is provided below the vehicle seat. In FIGS. 7 to 9, the portions where the warp floats (intersection points, etc.) are indicated by black squares.

The vehicle seat 2 in FIG. 1 has a seat cushion 4, a seat back 6, and a headrest 8 (all of which are examples of seat constituent members).
The headrest 8 has a pair of stay members (not shown) and is attached to the upper part of the seat back 6. Each of the pair of stay members is a rod-like member, and is arranged in parallel at a predetermined interval below the headrest 8.

[Seatback]
The seat back 6 is a member that is connected to the seat cushion 4 so as to be able to rise and fall. The seat back 6 of this embodiment includes a frame member 6F, a support member 20, a support portion (60, 61, 62), a board member 9a, and a shield member 9b (see FIGS. 1 to 3).
The board member 9 a is a flat member (typically made of resin) and can be disposed on the rear surface of the seat back 6. The shield member 9b is a substantially rectangular member (typically made of resin) and can be screwed to the side of the seat back 6 (side frame 6b).

In this embodiment, the support member 20 is attached to the frame member 6F while a plurality of support portions (60, 61, 62) are formed on the support member 20 (see FIGS. 1 to 3 and 6).
In this type of seat configuration, it is desirable to attach the simpler support member 20 to the frame member 6F with good workability while maintaining the seat performance as much as possible.
Therefore, in this embodiment, a support member 20 described later is attached to the frame member 6F with good workability while maintaining the seat performance as much as possible. Hereinafter, each configuration will be described in detail.

[Frame member]
The frame member 6F (substantially rectangular frame) includes an upper frame 6a, a pair of side frames 6b, and a lower frame 6c (see FIGS. 2 and 3).
The upper frame 6a is a rod-shaped member (substantially inverted U shape in front view) that forms the upper portion of the seat, and has a pair of support members SM. Each of the pair of support members SM is a cylindrical member (substantially rectangular) into which a stay member (not shown) can be inserted. In the present embodiment, the pair of support members SM are arranged in parallel on the rear surface side of the upper frame 6a with a predetermined interval.
The pair of side frames 6b is a flat plate member that forms the side of the seat. The lower frame 6c is a bar-like member bridged between the pair of side frames 6b at the lower part of the seat.

[Support member]
The support member 20 is a member that can support an occupant, and has a shape (substantially rectangular) that follows the shape of the frame member 6F on the seating side (see FIGS. 1 to 3 and FIG. 6).
The support member 20 of the present embodiment has a slightly wider outer shape than the frame member 6F, and includes a frame-shaped body 20a, a planar body 20b, and a plurality of support portions (side support portions 60, upper support portions 61, A lower support 62).
And the side part support part 60 is a protrusion part formed in the side part of the planar body 20b, and protrudes in the sheet | seat front side rather than the center of the planar body 20b. Moreover, the upper support part 61 is a protrusion part formed in the upper part of the planar body 20b, and the lower support part 62 is a protrusion part formed in the upper part of the planar body 20b.

(Frame body)
The frame-shaped body 20a is a frame-shaped member that can be assembled to the frame member 6F (see FIGS. 2 to 4 and 6).
The frame-like body 20a of the present embodiment is hollow at the center, and has a basic configuration (upper frame portion 22, pair of side frame portions 24, lower frame portion 26) and assembly portions 51 and 52 described later.
Here, the material of the frame-like body 20a is not particularly limited, and examples thereof include thermoplastic resins (polypropylene, vinyl chloride resin, polyethylene) and thermosetting resins (phenol resin, melamine resin, epoxy resin, urea resin).

(Assembly part)
The first assembly portion 51 is a portion for assembling the upper side (upper frame portion 22) of the support member 20 to the frame member 6F (see FIGS. 2 to 4).
The first assembly part 51 is a substantially rectangular part (viewed from above) and has an engaging part 51a that can be engaged with the upper frame 6a. The engaging part 51a is a part that curves downward from the rear side of the first assembly part 51, and a plurality of cuts are formed at equal intervals (comb shape).
In the present embodiment, the first assembly portion 51 is disposed at the center of the upper frame portion 22 (rear side) and protrudes rearward (in a direction facing the frame member 6F). Then, as will be described later, the support member 20 is assembled to the frame member 6F by engaging the engaging portion 51a with the upper frame 6a.

Moreover, the 2nd assembly | attachment site | part 52 is a substantially horizontal U-shaped (upward view) member, and can be assembled | attached to the support member SM (refer FIGS. 2-4).
In the present embodiment, the pair of second assembly parts 52 are disposed on the upper frame portion 22 (rear side) and project rearward. At this time, the pair of second assembly parts 52 are arranged in parallel on both sides at a predetermined interval so as to face the support member SM. When the support member 20 is assembled, the support members SM can be inserted and held in the pair of second assembly parts 52, respectively.

(Planar body)
The planar body 20b is a planar member (woven fabric or knitted fabric) that supports an occupant (see FIGS. 1 and 5). And the planar body 20b of a present Example has the single layer part 31, the multilayer part 32, and the boundary part 33 (The detailed structure structure of each part etc. are mentioned later).
The single layer portion 31 is a portion forming the center (sitting surface) of the planar body 20b, and can be constituted by a single (one piece) surface portion.
The multi-layer part 32 is a part disposed on the periphery (upper edge, side edge, lower edge) of the single layer part 31, and is a surface part continuously connected to the single layer part 31. The multilayer portion 32 of the present embodiment has double (two-piece) surface portions (first surface portion 32a and second surface portion 32b).

And the boundary part 33 is a surface part arrange | positioned between the single layer part 31 and the multilayer part 32, and can be comprised by the surface part (single piece) continuously connected to both the single layer part 31 and the multilayer part 32. FIG.
The boundary portion 33 of the present embodiment has a surface portion (for example, a surface portion having many intersection points per unit area) that is higher in rigidity than the single layer portion 31. Thus, by providing the boundary part 33 (part with high rigidity) between the single layer part 31 and the multilayer part 32, separation (peeling) between the single layer part 31 and the multilayer part 32 can be prevented or reduced.

(Constituent yarn)
In this embodiment, the first constituent yarn and the second constituent yarn can be used as constituent yarns of the planar body 20b (single layer portion 31, multi-layer portion 32, boundary portion 33) (details of each yarn will be described later).
The second constituent yarn is a wire material that is more elastically shrinkable than the first constituent yarn, and has at least one of various elongation characteristics (elongation elastic modulus at 20% elongation, initial tensile resistance, elongation) described later. It is preferable to provide all of the various elongation characteristics.
In the multilayer portion 32, as will be described later, the first surface portion 32a has a larger number of second constituent yarns than the second surface portion 32b, and is disposed inside the sheet. Thereby, the passenger | crew load input into the planar body 20b can be efficiently transmitted to the 1st latching site | part 41. FIG. Moreover, the designability of a sheet | seat can be maintained suitably by including many 1st constituent yarns in the 2nd surface part 32b.

(First component yarn)
As the first constituent yarn (material), animal-based or plant-based natural fibers, synthetic fibers, or blended fibers thereof can be used.
Examples of synthetic fibers include polyester fibers, polyamide fibers, polyvinyl alcohol fibers, cellulose fibers, and blended fibers thereof. Among these, filaments of polyester fibers (polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polylactic acid, etc.) and polyamide fibers (nylon 6, nylon 66, etc.) have excellent durability during use. It can be used suitably.
Here, the fineness (thickness) and the number of filaments of the first constituent yarn are not particularly limited, but span yarn, monofilament or multifilament can be exemplified.

(Second component yarn)
Various elastic yarns can be used as the second constituent yarn. Here, the elastic yarn is a wire having rubber elasticity. By using the elastic yarn (second constituent yarn), the seating performance (such as riding comfort) of the planar body 20b can be improved.
Examples of the elastic yarn (material) include a natural rubber-based natural fiber or a synthetic fiber wire. Examples of this type of synthetic fiber include polyester-based elastomer fiber, polyurethane-based fiber, polyamide-based elastomer fiber, polyether-based elastomer fiber, synthetic rubber-based fiber, and butadiene-based fiber.
Among these, polyester elastomer fibers have suitable elongation characteristics, and therefore, a wire material of the same fiber or a wire material (composite yarn) partially using the same fiber can be preferably used as the second constituent yarn of this embodiment. it can. Polyester methylene terephthalate fibers containing polytrimethylene terephthalate fibers (PTT fibers), polybutylene terephthalate fibers (PBT fibers), ethylene terephthalate polymers containing ethylene terephthalate units, and trimethylene terephthalate units. Examples thereof include fibers made of a polymer and a butylene terephthalate-based polymer containing a butylene terephthalate unit.

(Extension elastic modulus at 20% elongation)
The second constituent yarn is preferably a wire having an elongation elastic modulus at 85% elongation of 85 to 100%. A wire rod having an elastic modulus of elasticity of less than 85% is not sufficiently recovered at the time of extension and is in an extended state, so that wrinkles are likely to occur in the planar body 20b.
Here, the elongation modulus at 20% elongation can be measured in accordance with “JIS L 1013 8.9”. In the test for the elastic modulus of elasticity, the gripping interval is set to 200 mm, and the tensile speed is set to 20 mm / min. Also, it is stretched to 40 mm, which is 20% of the gripping interval.

(Initial tensile resistance)
The second constituent yarn is preferably a wire having an initial tensile resistance of 3 to 40 cN / dtex. Since the wire having an initial tensile resistance of less than 3 cN / dtex is extremely elongated due to the occupant's seating operation, the sitting comfort (particularly the stability) of the planar body 20b is deteriorated. In addition, since the wire rod having an initial tensile resistance greater than 40 cN / dtex hardly expands during the occupant's seating operation, the sitting comfort (flexibility, etc.) of the planar body 20b is deteriorated.
The initial tensile resistance can be measured according to “JIS L 1013 8.10”.

(Elongation)
The second constituent yarn is preferably a wire having an elongation of 40 to 150%. A wire rod having an elongation of less than 40% is difficult to stretch during the occupant's seating operation, and may make the occupant feel a feeling of crushing, thereby deteriorating the sitting comfort of the planar body 20b. In addition, since the wire having an elongation greater than 150% is excessively stretched, it becomes difficult to weave (it takes time to produce the planar body 20b), and the sitting comfort (particularly stability) of the planar body 20b is deteriorated.
The elongation is measured according to “JIS L 1013 8.5.1” and is a constant speed extension type, a gripping interval of 200 mm, and a tensile speed of 200 mm / min. E ₂ is the elongation at maximum load.

For example, “Diaflora (registered trademark)” (330 dtex-1f-CS0330M) manufactured by Toyobo Co., Ltd. is an elastic yarn of polyester elastomer fiber. The elastic yarn has suitable elongation characteristics (20% elongation modulus: 91%, initial tensile resistance: 6 cN / dtex, elongation: 69%). “Diaflora (registered trademark)” (500 dtex-1f-BD0500M) manufactured by the same company also has suitable elongation characteristics (20% elongation elastic modulus: 92%, initial tensile resistance: 10 cN / dtex, elongation: 101%). .
“Solotex (registered trademark)” (200 dtex-1f-SBR) manufactured by Solotex is an elastic yarn of PTT fiber. The elastic yarn also has suitable elongation characteristics (20% elongation modulus: 90%, initial tensile resistance: 20 cN / dtex, elongation: 49%).

(Fused yarn)
Further, it is desirable that the planar body 20b (particularly the multilayer portion 32) has a fused yarn. That is, the planar body 20b of the present embodiment uses a bag structure (double structure, one-ply structure, etc.). In the multilayer portion 32, the constituent yarns are assigned to the first surface portion 32a and the second surface portion 32b, and the density is lowered. For this reason, in order to stop (stabilize) the surface portion of the multilayer portion 32, it is preferable to use a molten yarn that has a lower melting point than the first constituent yarn or the second constituent yarn and is melted and fixed by heat.
In order to ensure strength, it is preferable that the molten yarn has a core / sheath structure. Further, it is preferable to use a material having a high melting point for the core and a material having a melting point lower than the melting point of the core for the sheath so that the wire remains in the core even after fusion.

(Twist number)
Here, the number of twists of each constituent yarn (first constituent yarn, second constituent yarn, fusion yarn) can be appropriately set according to the thickness (fineness) of each constituent yarn, the number of filaments, and the like.
For example, in the case of single covering, desired durability can be imparted to each constituent yarn by setting the number of twists to 20 to 2000 T / m according to the fineness of each constituent yarn. Here, when the number of twists of each constituent yarn is less than 20 T / m, desired durability tends not to be obtained. Moreover, when the number of twists of each constituent yarn is more than 2000 T / m, multiple twists are likely to occur, and it is difficult to obtain twist uniformity.

(staining)
Each constituent yarn (first constituent yarn, second constituent yarn, fusion yarn) can be appropriately dyed. However, in order to ensure elasticity, it is desirable that the second constituent yarn (elastic yarn) be shrunk by avoiding yarn dyeing and heat-set by anti-dying or post-processing to ensure elongation.

[Manufacture of planar bodies]
As a planar body 20b of the present embodiment, a method for producing a woven fabric having a single layer portion 31, a multilayer portion 32, and a boundary portion 33 will be described (see FIGS. 5 and 7 to 9). In this embodiment, the first surface portion 32a and the second surface portion 32b can be formed on the multilayer portion 32 by various bag structures (double structure, one-ply structure, etc.).
Here, the structure of the single layer portion 31 is not particularly limited.
The structure of the multilayer portion 32 can be divided into a first surface portion 32a and a second surface portion 32b using a bag weave structure. The multi-layer portion 32 has a structure in which the yarn is divided into the first surface portion 32a and the second surface portion 32b and the density is reduced, and therefore, a structure such as a flat structure that has a small amount of yarn jumping and is not easily misaligned is preferable (see FIG. 8). .
Furthermore, in this embodiment, a boundary portion 33 is provided between the single layer portion 31 and the multilayer portion 32 to prevent or reduce separation (peeling) between the single layer portion 31 and the multilayer portion 32. Although the density of the boundary portion 33 is the same as that of the single layer portion 31, the pad material 6 </ b> P is inserted into the multi-layer portion 32 and a load is applied.

In the present embodiment, a part of the planar body 20b can be composed of the second constituent thread (elastic thread), and the other part of the planar body 20b can be composed of the first constituent thread. In addition, as the single layer part 31 (structure), a plain woven fabric, an oblique woven fabric, or a composite of these can be used as a woven structure (FIG. 7 shows a composite). Further, the boundary portion 33 can be configured by using a plain woven fabric, an oblique woven fabric, a satin woven fabric, or a composite thereof as a woven structure (FIG. 8 shows a plain woven fabric). And the multilayer part 32 can be comprised by making a woven structure into a plain fabric, an oblique fabric, a satin fabric, or these composites (FIG. 9 shows a composite).
Here, it is preferable to use a jacquard loom capable of weaving the pattern to a width that can cover and cover the first locking portion 41 including the center and the peripheral edge of the planar body 20b.

When weaving the planar body 20b, part or all of the weft (warp) is constituted by the second constituent yarn, and the remaining weft (warp) is constituted by the first constituent yarn. At this time, the second constituent yarn (weft) can be driven into each of a plurality or a single first constituent yarn (warp). In addition, the second constituent yarn (warp yarn) can be arranged for each of a plurality or a single first constituent yarn (weft yarn).
In this embodiment, the second constituent yarn (elastic yarn) as the warp and the first constituent yarn are alternately split and warped, and then the second constituent yarn (elastic yarn) as the weft is plural or singular. It was decided to drive for each first constituent yarn (weft) (see FIGS. 7 to 9).

(processing)
In the present embodiment, various types of processing can be appropriately performed on the planar body 20b. For example, it is preferable that the planar body 20b is contracted by heat setting to give the planar body 20b elongation.
Examples of the processing include a scouring process, a dyeing process, a heat setting process, a texture-making process, a post-processing agent application process, and a finishing setting process. Oite the processing of the planar body 20b is also possible to perform all the above steps can be omitted one or more steps.

(Locking part)
In the present embodiment, the first surface portion 32a and the second surface portion 32b can be individually attached to the frame body 20a or the frame member 6F. The seat back 6 can be formed with a first locking portion 41 for fixing the end portion of the first surface portion 32a and a second locking portion 42 for fixing the end portion of the second surface portion 32b (FIG. 6).
In this embodiment, the second surface portion 32b is longer than the first surface portion 32a. Next, a substantially horizontal J-shaped hook member FM (typically made of resin) is sewn to the end of the second surface portion 32b. Then, as will be described later, the second locking portion 42 can be formed by locking the hook member FM to the frame member 6F on the rear side of the seat.

Moreover, the 1st latching | locking site | part 41 can be formed by integrating the edge part of the 1st surface part 32a with the frame-shaped body 20a.
The method for integrating the end of the first surface portion 32a and the frame-shaped body 20a is not particularly limited. For example, when the frame-shaped body 20a (made of resin) is molded, the planar body 20b is stretched in the cavity of the mold. Then, by pouring a molding raw material (such as molten resin) into the mold, the planar body 20b can be integrally attached while the frame-shaped body 20a is being molded. Then, the resin of the support member 20 penetrates and solidifies into the edge (mesh) of the planar body 20b, so that the peripheral end of the planar body 20b is integrated with the frame-shaped body 20a (the first locking portion 41 is formed). can do.

[Vehicle seat assembly work]
2 and 3, the support member 20 is assembled to the frame member 6F. In the present embodiment, the support member 20 can be positioned in the vertical direction of the seat by hooking the first assembly portion 51 on the upper frame 6a.
Next, the support member 20 (lower side) is rotated in the direction approaching the frame member 6F with the first assembly portion 51 as the rotation center, and the support member 20 is covered (assembled) from the seating side of the frame member 6F. The support member 20 can be attached to the frame member 6F by inserting the support member SM into the second assembly portion 52.

(Formation of support part)
Next, support portions (60, 61, 62) are formed on the support member 20, respectively (see FIGS. 1, 5, and 6). At this time, in this embodiment, each support portion (60, 61, 62) can be formed by storing the pad material 6P in the multilayer portion 32 at the circumferential end of the planar body 20b.
Here, the pad material 6P is a substantially half-shaped (cross-sectional view) member, and can be formed of, for example, a porous material (density: 10 kg / m ^{3 to} 60 kg / m ³ ) having flexibility. Examples of this type of pad material 6P include a urethane pad having a high air content and a slab urethane foam made of a flexible urethane foam.

And the side part support part 60 can be formed by accommodating the pad material 6P in the multilayer part 32 of both sides of the planar body 20b (refer FIG.1 and FIG.6).
At this time, in this embodiment, the pad material 6P is disposed between the first surface portion 32a and the second surface portion 32b. Then, while covering (hiding) the first locking portion 41 with the second surface portion 32b, it is pulled into the seat from the rear side of the seat and the hook member FM is attached to the side frame 6b (second locking portion 42). Form). In addition, the 2nd latching | locking site | part 42 can be concealed with the board member 9a, for example. At this time, the retracting portion (42a) of the second locking portion 42 can be pressed by appropriately changing the end shape of the board member 9a.
And the side part support part 60 can support a passenger | crew side part by projecting toward a seat front side in a seat side position (it can function as a side support).
Similarly, the upper support portion 61 can be formed by housing the pad material 6P in the multilayer portion 32 on the upper side of the planar body 20b. Furthermore, the lower support part 62 can be formed by accommodating the pad material 6P in the multilayer part 32 below the planar body 20b.

As described above, in this embodiment, since the single layer portion 31 and the multilayer portion 32 are integrally formed (simplely formed), the connecting operation of both layer portions can be omitted. And by accommodating the pad material 6P in the multi-layer part 32, each support part (60-62) can be formed comparatively easily.
In the present embodiment, the first surface portion 32a and the second surface portion 32b forming the multilayer portion 32 are provided with locking portions (41, 42), and can be individually attached to the frame member 6F or the frame-shaped body 20a. (It was set as the structure which was excellent in the handleability.). And it was set as the structure which conceals the 1st latching | locking site | part 41 with the 2nd surface part 32b (it was set as the structure excellent in the designability).

Further, in the present embodiment, the first surface portion 32a has more second constituent yarns than the second surface portion 32b and is arranged on the inner side of the seat, so that the load input to the seat surface can be increased. It can be efficiently transmitted to the stop part 41. In the present embodiment, since the second surface portion 32b contains a large amount of the first constituent yarn, the design of the sheet can be maintained relatively favorably, for example, by avoiding deformation of the handle due to expansion and contraction.
In this embodiment, by providing the boundary portion 33 (high strength portion) between the single layer portion 31 and the multilayer portion 32, the separation between the single layer portion 31 and the multilayer portion 32 can be prevented or reduced.
Therefore, according to the present embodiment, the simpler support member 20 can be attached to the frame member 6F with good workability while maintaining the seat performance as much as possible.

[Test example]
Hereinafter, although this embodiment is described based on an example, the present invention is not limited to the example.
In this test, a planar body 20b as a woven fabric was produced (see FIGS. 4 and 7 to 9). The loom uses a jargar loom with two hooks with a warp density of 102 / 2.54 × 10 ⁻² m and a threading width of 2.337 m, and weaving is performed with a weft thread of 100 / 2.54 × 10 ⁻² m. went.
The single layer portion was arranged at the center, the width was 3.4 × 10 ⁻¹ m, the multilayer portion was arranged around the single layer portion, and the width was 3.9 × 10 ⁻¹ m. The boundary part was arranged over the entire circumference between the single layer part and the multilayer part, and the width was 2.5 × 10 ⁻² m (see FIG. 5).
The warp includes elastic yarn (second component yarn), (1) polytrimethylene terephthalate multifilament false twist yarn (167 dtex / 48 f / l), and design yarn (first component yarn), (2) polyester A false twisted dyed yarn (500 dtex / 108 f / l) was placed.
In the wefts, (A) polytrimethylene terephthalate monofilament (110 dtex / l (a thermoplastic polyether ester elastomer having a core / sheath structure with a melting point of 154 ° C. is disposed)) as an elastic yarn (second constituent yarn)) (B) Polyester false twisted dyed yarn (500 dtex / 108 f / l) was used as the yarn for design (first constituent yarn).
The warp arrangement is from the left of FIGS. 7 to 9, 1 and 2 repeats, and the weft arrangement is from the top of FIGS. 7 to 9, A, A, B, A, A, A, A, A, B, Weaving was carried out with A, A and A repeats.

In the single layer part 31, the complete structure of FIG. In addition, referring to FIG. 8, the boundary portion 33 is formed with a structure having more crossing points than the single layer portion.
And the multilayer part 32 assembled the structure | tissue which becomes a bag weave with reference to FIG. By assembling the yarn arrangement and structure of FIG. 9, the surface (the upper surface formed by the structure diagram of FIG. 9 and corresponding to the second surface portion 32b of FIG. 6) has a yarn (2, B) with an emphasis on designability. More appeared than the elastic yarn (1, A). Further, the back surface (the lower surface formed in the organization chart of FIG. 9 and corresponding to the first surface portion 32a of FIG. 6) has more elastic yarns (1, A) than the yarns (2, B) that emphasize design. I tried to make it.
The raw machine is dry-heat treated at 140 ° C for 90 seconds with a shrink surfer and the fabric (planar body 20b) is shrunk with free tension in advance, and then at 180 ° C for 90 seconds with a heat setter with a pin tenter for fusing the set and yarn Dry heat treatment was performed.
The planar body of this test example was excellent in tailoring and comfortable to sit on by using elastic yarn. In addition, the use of fused yarns for the planar body could stabilize the first surface portion and the second surface portion of the multi-layer portion having a low woven density without causing misalignment.

The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In the present embodiment, the seat back 6 has been described as an example of a seat constituent member. The configuration of the present embodiment can be applied to various seat components such as a seat cushion.
(2) In the present embodiment, the example in which the multilayer portion 32 is provided on the periphery of the planar body 20b has been described, but the formation position of the multilayer portion 32 is not limited. For example, the multilayer portion 32 can be formed in the center of the planar body 20b.
(3) In the present embodiment, the example in which the pad material 6P is accommodated in the multilayer portion 32 has been described. However, the multilayer portion 32 can accommodate various other members such as a heater member.
(4) Further, in the present embodiment, the woven fabric sheet 20b is exemplified, but a knitted sheet may be used.
(5) Moreover, in the present Example, an example of the 1st locking part 41 and the 2nd locking part 42 was illustrated. The position where each locking part is formed can be appropriately changed according to the sheet configuration. Moreover, according to a sheet | seat structure, a 1st surface part and a 2nd surface part can be attached by a single latching | locking site | part.
(6 )
(7) In this embodiment, the boundary portion 33 is provided between the single layer portion 31 and the multilayer portion 32. When the connection strength between the single layer portion and the multilayer portion is high, the boundary portion can be omitted.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 6P Pad material 6F Frame member 6a Upper frame 6c Lower frame 6b Side frame 9b Shield member 9a Board member 20 Support member 20a Frame-like body 20b Planar body 22 Upper frame 24 Side frame portion 26 Lower frame portion 31 Single layer portion 32 Multilayer portion 32a First surface portion 32b Second surface portion 33 Boundary portion 41 First locking portion 42 Second locking portion 51 First assembly portion 52 Second assembly portion 60 Side support part 61 Upper support part 62 Lower support part FM Hook member SM Support member

Claims (3)

The seat component includes a seat member such as a seat cushion and a seat back, and the seat component includes a frame member forming a seat frame and a support member capable of supporting an occupant, and the support member is attached to the frame member. In the vehicle seat having the configuration,
The support member has a planar body made of a woven fabric or a knitted fabric that can support an occupant, and a frame body that can be attached in a stretched state.
A single layer portion consisting of a single surface portion and a multilayer portion consisting of double surface portions continuously connected to the single layer portion are formed on the planar body, and another member such as a pad material is formed on the multilayer portion. It can be stored ,
The first surface portion and the second surface portion forming the multi-layered portion each have a first component yarn and a second component yarn that is elastically more easily contracted than the first component yarn,
The vehicle seat in which the first surface portion has more second constituent yarns than the second surface portion and is locked inward of the seat than the second surface portion . The multilayer portion is formed at an end portion of the planar body, and the first surface portion and the second surface portion forming the multilayer portion can be individually attached to the frame member or the frame body,
The first surface portion is attached to the frame member, and the second surface portion is covered with the locking portion of the first surface portion while the second surface portion is the locking portion of the first surface portion. The vehicle seat according to claim 1, which is attached to different parts. The planar body has a boundary portion arranged between the single layer portion and the multilayer portion and continuously connected to both portions, and the boundary portion has higher rigidity than the single layer portion. The vehicle seat according to 1 or 2.

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