JP6221960B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a seat frame, a seat pad, and a support member (a member that supports the seat pad on the seat frame).

  As this type of vehicle seat, a vehicle seat having a seat cushion and a seat back is known (see Patent Document 1). The seat cushion includes a frame-like (substantially rectangular) seat frame forming a seat skeleton, a seat pad (made of foamed resin) forming a seat outer shape, and a support member. The support member includes a support body that can be locked to the seat frame and a planar body that is stretched in the support body. The support body is a frame body shaped like the seat frame, and has a metal core portion and a covering portion (made of resin) around the core portion. The planar body is a surface material formed by weaving and knitting a thread material of natural fiber or synthetic fiber. Here, the above-mentioned planar body can be integrally attached to the support simultaneously with the molding of the covering portion. For example, a planar body is disposed in a cavity of a molding die (a molding space following the shape of the covering portion). Next, the molding material is allowed to enter the gaps (weaves, stitches, etc.) at the ends of the planar body while pouring the molding material of the covering portion into the cavity. And a support body and a planar body can be integrated by solidifying a molding material within the edge part of a planar body. After the support body and the planar body are integrated in this way, the seat pad can be supported by the planar body stretched in the support body while the support body is locked to the seat frame.

  By the way, in the above-described configuration, it is desirable that the planar body has appropriate rigidity in consideration of the support performance of the seat pad and the like. Therefore, a resin reinforcing portion is formed by backing the surface of the planar body prior to forming the support. At this time, the rigidity of the planar body can be increased by covering substantially the entire surface of the planar body with the reinforcing portion (forming the planar reinforcing portion).

JP2011-254952A

  By the way, in the known technique, the support and the planar body are integrated by the molding material entering and solidifying into the end (gap) of the planar body. In this type of configuration, if the reinforcing portion is formed on substantially the entire surface of the planar body, the gap between the end portions of the planar body may be clogged, and there is a risk that the intrusion of the molding material may be prevented (the planar body). The configuration tends to be slightly inferior to the mounting stability). The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to improve the rigidity of a planar body with good performance.

As means for solving the above-mentioned problems, the vehicle seat according to the first aspect of the invention includes a seat constituent member such as a seat cushion or a seat back. The seat constituent member includes a seat frame that forms a seat skeleton, a seat pad that forms a seat outer shape and can elastically support an occupant, and a support member that is disposed on the seat frame and can support the seat pad. In the present invention, the support member includes a support body that can be attached to the seat frame, and a planar body that is stretched in the support body and can support the seat pad. Then, after the resin reinforcing portion is formed on the planar body, the end portion of the planar body is integrally attached to the covering portion while the resin covering portion is formed on the support. In this type of configuration, it is desirable to increase the rigidity of the planar body with good performance (for example, while maintaining suitable mounting stability). Therefore, in the present invention, the planar body is a quadrangular surface material having a gap that allows entry of the molding material of the covering portion, a pair of fixed end portions attached to the support body, and a non-contact with the support body. It has a pair of free ends in the attached state. The reinforcing portion is linearly formed on the planar body and is arranged from one of the pair of free ends toward the other, and the elastic yarn having rubber elasticity, which is a constituent thread of the planar body, is a pair of fixed ends. It arrange | positions toward the other from one side of the part . In this invention, since a reinforcement part is formed in a planar body in the shape of a line or a point, the clearance gap structure of the edge part of a planar body can be maintained suitably (it is the structure excellent in attachment stability). Moreover, in this invention, the rigidity of a planar body can be improved, without inhibiting expansion / contraction of the planar body at the time of supporting a seat pad as much as possible.

  The vehicle seat of the second invention is the vehicle seat of the first invention, wherein the planar body is a first yarn material made of natural fiber or synthetic fiber, and a portion having a lower melting point than the first yarn material. A woven or knitted fabric provided with a second yarn material having And in this invention, it is the structure which forms a reinforcement part linearly by melt-solidifying a 2nd thread material (it is a structure with a comparatively easy manufacture).

According to the first aspect of the present invention, the rigidity of the planar body can be improved with good performance. According to the second invention, the rigidity of the planar body, Ru can be more enhanced performance better.

It is a perspective view of a vehicle seat. It is a disassembled perspective view of a seat cushion. It is a schematic perspective view of the support member in the middle of preparation. It is an organization chart of a planar object. (A) is a partial cross section figure of a support member, (b) is a partial cross section figure of the support member concerning another example. It is a top view of the support member concerning a modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. Also, in each figure, 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. The vehicle seat 2 in FIG. 1 includes a seat component (seat cushion 4, seat back 6, headrest 8) and a slide rail 9. Each of the seat constituent members includes a seat frame (4F, 6F, 8F) forming a seat skeleton, a seat pad (4P, 6P, 8P) forming a seat outer shape, and a seat cover (4S, 6S, 8S) covering the seat pad. ). The slide rail 9 is a member that slides the seat constituent member back and forth in the vehicle, and includes an upper rail 9a and a lower rail 9b. In the present embodiment, the seat frame 4F is attached to the upper part of the upper rail 9a, and the lower rail 9b is attached to the passenger compartment floor. And by assembling both rails so that sliding is possible, a seat constituent member can be slid back and forth with respect to a vehicle floor.

[Seat cushion]
The seat cushion 4 has a basic configuration (4F, 4P, 4S) and a support member 20 (a support 20a, a planar body 20b) (see FIG. 2, details of each member will be described later). In the present embodiment, the seat pad 4P is covered with the seat cover 4S while being disposed on the support member 20 attached to the seat frame 4F. The support member 20 includes a support body 20a and a planar body 20b (both will be described later in detail), and the sheet pad 4P is supported by the planar body 20b stretched in the support body 20a. In this type of configuration, it is preferable that the rigidity of the planar body 20b be improved with good performance (for example, while maintaining suitable mounting stability). Therefore, in the present embodiment, the rigidity of the planar body 20b is improved with good performance by the configuration described later (the reinforcing portion 32 or the like). Hereinafter, each configuration will be described in detail.

[Basic configuration]
The seat cushion 4 (basic configuration) includes a seat cover 4S, a seat pad 4P, and a seat frame 4F (see FIGS. 1 and 2). Here, the seat cover 4S is a bag-like member that can cover the seat pad 4P, and can be formed of, for example, fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather). The seat pad 4P can be formed of a foamed resin such as polyurethane foam.

  The seat frame 4F is a substantially rectangular (upward view) frame, and includes a front frame 12, a pair of side frames 14, and a rear frame 16 (see FIG. 2). The front frame 12 is a flat plate member that constitutes the front skeleton of the seat cushion 4 and includes a plurality of claw portions 13 that are arranged in parallel in the seat width direction. Each nail | claw part 13 is a member which makes substantially reverse L shape (side view), and can latch the below-mentioned support body 20a. In the present embodiment, the plurality of claw portions 13 can be formed on the upper surface (inclined surface) of the front frame 12 at appropriate intervals. The pair of side frames 14 is a flat plate member that constitutes a side skeleton of the seat cushion 4, and is disposed facing each other on the side of the seat. The rear frame 16 is a bar (cylindrical shape) that reinforces the rear portion of the seat frame 4F, and can be disposed between the pair of side frames 14 in a bridging manner.

[Support member]
The support member 20 is a member that is disposed on the seat frame 4F and supports the seat pad 4P, and includes a support body 20a and a planar body 20b described later (see FIGS. 2 and 3). In the present embodiment, as will be described later, a resin reinforcing portion 32 (detailed later) is provided on the planar body 20b to enhance the rigidity of the planar body 20b with good performance.

(Support)
The support 20a is a frame that can be disposed on the seat frame 4F (a substantially rectangular shape that is long in the longitudinal direction of the seat when viewed from above), and includes a front frame portion 22, a pair of side frame portions 24, and a rear frame portion 26. (See FIG. 2 and FIG. 3). The front frame portion 22 is a portion forming one side of the front portion of the support 20a, and is disposed in front of the seat and extends in the seat width direction. Further, the rear frame portion 26 is a portion forming one side of the rear portion of the support 20a, and is arranged behind the seat and extends in the seat width direction. And a pair of side frame part 24 is a site | part which makes one side of the support body 20a side part, respectively, and is extended in a sheet | seat front-back direction. The rear portion (27) of each side frame portion 24 is curved and deformed in a substantially inverted U shape, and can be latched to the rear frame 16 (see FIG. 2).

(Core / Coating)
The support body 20a of the present embodiment includes a core portion 28 that forms the skeleton of the support body 20a and a covering portion 29 (see FIGS. 2 and 3). The core portion 28 is a frame body having a shape that follows the outer shape of each of the frame portions (22, 24, 26) described above, and can be formed of various metals (magnesium or the like) having a desired rigidity or a hard resin wire. Moreover, the coating | coated part 29 is a resin layer formed around the core part 28, and is formed in a pair of side frame part 24 (all or one part) in this embodiment, respectively. Examples of the material of the covering portion 29 include thermoplastic resins (polypropylene, vinyl chloride resin, polyethylene) and thermosetting resins (phenol resin, melamine resin, epoxy resin, urea resin).

(Planar body)
The planar body 20b is a stretchable surface material that can support the seat pad 4P, and has a configuration described later (a reinforcing portion 32, a fixed end portion 34, and a free end portion 36) (see FIGS. 2 to 4). ). Here, the planar body 20b (material) is not particularly limited, but is a surface material provided with a gap (texture, stitch, etc.) that allows the molding material to enter the covering portion 29, and is a woven fabric, knitted fabric, nonwoven fabric, or fiber laminate. The body can be exemplified. The planar body 20b of the present embodiment can be formed of a woven fabric provided with yarn materials (first yarn materials AY, CY, second yarn material BY, etc.) described later as constituent yarns (see FIG. 4). And it is desirable for the planar body 20b to have an air permeability of, for example, 20 to 400 cm ³ / cm ² · s (having a suitable gap). If the air permeability of the planar body 20b is less than 20 cm ³ / cm ² · s, the resin passing through the planar body 20b is small and there is a possibility that desired strength cannot be imparted to the covering portion 29. Moreover, when the air permeability of the planar body 20b is larger than 400 cm ³ / cm ² · s, there is a possibility that a desired strength cannot be imparted to the planar body 20b. The air permeability of the planar body 20b is measured according to “JIS L 1096 8.26.1 Method A Frazier Form” (the amount of air passing through the test piece). Here, the outer dimension of the planar body 20b is not particularly limited as long as it fits within the support 20a. For example, the planar body 20b of the present embodiment has a dimension that can be bridged to the pair of side frame portions 24 in a substantially rectangular shape that is long in the sheet width direction. The dimension in the short direction of the planar body 20b is set shorter than the separation dimension between the front frame part 22 and the rear frame part 26.

(First thread material)
Examples of the first yarn material (AY, CY) include animal-based or plant-based natural fibers, synthetic fibers, or mixed yarns of these fibers (see FIG. 4). Here, examples of the synthetic fibers include polyester fibers, polyamide fibers, polyvinyl alcohol fibers, cellulose fibers, and filaments of these mixed fibers. Among them, filaments of polyester fibers (polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polylactic acid, etc.) and polyamide fibers (nylon 6, nylon 66, etc.) Since it is excellent in durability at the time of use, it can be suitably used as the first yarn material. In addition, moderate elasticity can be provided to the planar body 20b by using various elastic yarns (thread materials having rubber elasticity) as the first thread material. Examples of this type of elastic yarn include polyester-based elastomer fibers (PTT, PBT), polyurethane-based fibers, polyamide-based elastomer fibers, polyether-based elastomer fibers, synthetic rubber-based fibers, and butadiene-based fibers.

(Second thread material)
The second yarn material (BY) is a yarn material having a lower melting point (fusion portion) than the first yarn material, and various fusion yarns (fully melted type, mixed fiber type, core-sheath type, etc.) Can be used (see FIG. 4). Here, the mixed fiber type fused yarn is a synthetic fiber in which a relatively high melting point fiber and a relatively low melting point fiber (fused part) are mixed. The core-sheath type fusion yarn is, for example, a synthetic fiber having a core portion having a relatively high melting point and a sheath portion (fusion portion) having a relatively low melting point. The melting point of the second thread material (fused part) is preferably 20 ° C. or lower than the melting point of the first thread material, and can typically be set in the range of 100 ° C. to 240 ° C. For example, when the first yarn material of polyethylene terephthalate is used, a second yarn material having a melting point of 240 ° C. or lower (for example, polyamide, polyester, or polyethylene filaments) can be used. The fusion part is typically arranged continuously or intermittently in the longitudinal direction of the second yarn material. Further, it is preferable that the second yarn material (BY) as the fusing yarn is not slipped off in the process of making the planar body 20b because the end thread (the constituent thread at the end of the planar body) frays during cutting.

[Creation of planar body]
With reference to FIG. 4, after weaving a woven fabric using the first yarn material (AY, CY) and the second yarn material (BY) as constituent yarns, the planar body 20b is created by performing heat treatment. In the present embodiment, the first yarn material AY (high melting point PET normal yarn, 100d / 36f) and the second yarn material BY (low melting point polyester-based fusion spun yarn, 30/1) are used as warp yarns. Is used. Further, the first yarn material CY (PTT elastic yarn, 200T / 1f) is used as the weft yarn. Then, when warping the warp yarn, the second yarn material BY is used at a rate (typically a rate of 1 to 5 yarns) for each of the plurality of first yarn materials AY. Thus, the plurality of second thread materials BY can be arranged in parallel on the planar body 20b at a predetermined interval. Next, the planar body 20b is woven by driving the first yarn material CY as a weft yarn into each warp yarn. At this time, moderate elasticity can be imparted to the planar body 20b by using the first thread material CY (elastic thread) as the weft.

(Formation of reinforcement)
And the 2nd thread material BY is melt-solidified by forming the planar body 20b by heat processing by predetermined | prescribed temperature setting (a reinforcement part is formed). In FIG. 3, for the sake of convenience, reference numerals are given to some of the reinforcing parts, and the other reinforcing parts are indicated by broken lines with reference numerals omitted. Here, the heat treatment may be an existing heat treatment (high-temperature heat set treatment, dyeing treatment, etc.) of the planar body 20b (creation process). The heat treatment may be a heat treatment only for melting the second yarn material BY (a heat treatment different from the existing heat treatment). Then, in the heat treatment, the second yarn material BY is melted and solidified without melting the first yarn materials AY and CY as much as possible (see FIG. 4). At this time, the second thread material BY can be formed in an indefinite shape, but the strength of the planar body 20b can be suitably maintained by melting it to such an extent that the outer shape as the thread material can be maintained. By doing so, linear reinforcing portions 32 extending in the warp yarn direction can be formed in parallel on the planar body 20b at predetermined intervals. And in this embodiment, the clearance gap (texture) structure of the edge part of the planar body 20b can be maintained suitably by forming the linear reinforcement part 32. FIG. Moreover, in this embodiment, each 2nd thread material BY (warp thread) and 1st thread material CY (horizontal thread | yarn) cross, raising and sinking alternately. Then, each second thread material BY is melted and solidified and fixed to the first thread material CY or the like, whereby the reinforcing portion 32 can be formed on each of the front and back surfaces of the planar body 20b (becomes excellent in rigidity). In addition, the first thread material CY and each second thread material BY can be adhered appropriately to prevent occurrence of misalignment of the planar body 20b (becomes excellent in quality).

[Manufacture of support members]
Referring to FIGS. 2, 3, and 5, using a molding apparatus, a covering portion 29 is formed around core portion 28 and integrated with planar body 20 b (insert molding). Here, the molding apparatus (not shown) has a first mold, a second mold, and a cavity (a molding space following the outer shape of the covering portion) formed between the two molds. Therefore, in this embodiment, the sheet material 20b (slightly large original fabric in this embodiment) and the core portion 28 are appropriately disposed in the cavity, and then the molding material (liquid resin) of the covering portion 29 is poured. At this time, by appropriately adjusting the orientation of the planar body 20b, the end of the planar body 20b viewed in the direction in which the first thread material CY extends (the weft direction) is placed in the cavity (between the pair of side frame portions). ). Further, the end portion of the planar body 20b viewed in the direction in which the second thread material BY extends (the warp yarn direction) is disposed outside the cavity (between the front frame portion and the rear frame portion). In this state, the molding material (liquid resin) is poured toward the core portion 28 while passing through the planar body 20b. Thus, the planar body 20b is integrally attached while forming the covering portion 29 around the core portion 28 (see FIG. 5A). In the present embodiment, the gap structure at the end of the planar body 20b is suitably maintained. For this reason, the resin of the covering portion 29 enters and solidifies at the end of the planar body 20b, so that the planar body 20b is integrated relatively firmly into the support 20a.

(Shape of cover)
Here, the shape of the covering portion 29 is desirably a shape that covers the entire periphery of the core portion 28 (see FIG. 5A). As described above, the covering portion 29 is distributed substantially uniformly around the planar body 20b and the core portion 28, whereby the support 20a and the planar body 20b are suitably integrated. In addition, the core part 28 may be partially exposed by the non-uniform distribution of the covering part 29 around the core part 28 as long as the mounting strength of the support 20a and the planar body 20b is not extremely reduced. (See FIG. 5 (b)).

(Formation of fixed end and free end)
Next, the planar member portion that protrudes from the pair of side frame portions 24 is appropriately cut (cut) to form the support member 20 (see FIG. 4). Here, in the present embodiment, each second thread material BY is melted and solidified and fixed to the first thread material CY or the like. In this way, the second yarn material (BY) is melted and solidified and integrated with the end yarn, so that fraying of the end yarn at the time of cutting is prevented or reduced. ) Is preferably avoided. In this way, the end portions of the planar body 20b viewed in the weft direction are integrated with the covering portion 29 (each side frame portion), whereby a pair of fixed end portions 34 are formed on the planar body 20b. Further, the end of the planar body 20b viewed in the warp yarn direction is held in a non-integrated state with the support body 20a (disposed between the front frame portion and the rear frame portion), so that the planar body 20b A pair of free ends 36 are formed.

[Assembly of seat cushion]
1 and 2, the seat pad 4P is attached to the seat frame 4F via the support member 20, and then covered with the seat cover 4S. In the present embodiment, the front frame portion 22 is locked to each claw portion 13 while the support member 20 is disposed on the seat frame 4F. Moreover, the support member 20 (support 20a) can be attached to the seat frame 4F by hooking the rear portion 27 of each side frame portion to the rear frame 16. The seat pad 4P is elastically supported while being disposed on the support member 20 (planar body 20b). In the present embodiment, the support body 20a and the planar body 20b are integrated relatively firmly, and the planar body 20b is reinforced by the linear reinforcing portion 32 to have appropriate rigidity. For this reason, the seat pad 4P can be supported with a stable feeling by the support member 20 (the structure is excellent in support performance).

[When sitting]
With reference to FIGS. 1 to 3, the planar body 20 b is bent and deformed so as to be concave downward between the pair of fixed end portions 34 by pressing when the occupant is seated. At this time, the planar body 20b can be suitably bent and deformed by elastic expansion and contraction of the first yarn material CY (elastic yarn) as a weft. In the present embodiment, the linear reinforcing portion 32 is arranged from one of the pair of free ends 36 toward the other. By doing so, the first thread material CY (elastic thread) as the weft thread is not obstructed as much as possible (without obstructing the expansion and contraction of the planar body 20b when supporting the seat pad) as much as possible. The rigidity of the body 20b can be increased.

As described above, in the present embodiment, the reinforcing portion 32 is linearly formed on the planar body 20b, so that the gap structure at the end of the planar body 20b can be suitably maintained (with a configuration excellent in mounting stability). is there). Moreover, in this embodiment, it is the structure which forms the reinforcement part 32 in the linear form by melt-solidifying 2nd thread material BY (it is a structure with comparatively easy manufacture). That is, in this embodiment, the second thread material BY can be disposed simultaneously with the weaving of the planar body 20b. For this reason, the reinforcement part 32 can be formed only by adding heat processing to the planar body 20b. In the present embodiment, the linear reinforcing portion 32 is arranged from one of the pair of free ends 36 toward the other. By doing so, the rigidity of the planar body 20b can be increased without hindering the expansion and contraction of the planar body 20b (first thread material CY) when supporting the seat pad 4P.
For this reason, according to this embodiment, the rigidity of the planar body 20b can be improved with good performance.

[Modification]
Here, the configuration of the support member may take various configurations in addition to the above (see FIG. 6). For example, in the support member 21 according to the modified example, the support body 21a is configured by only a pair of side frame portions 24 (a relatively simple configuration). And the front-and-rear end part of each side frame part 24 is attached to the seat frame 4F, respectively, extending the planar body 20b (the same structure as the above-mentioned embodiment) between the pair of side frame parts 24 in a bridging manner. . According to this modification, the rigidity of the planar body 20b can be improved with high performance while the support 21a has a simple configuration. As another example, the support body can be configured by only the front frame portion and the rear frame portion.

[Test example]
Hereinafter, although this embodiment is described based on an example, the present invention is not limited to the example.
[Example 1]
In Example 1, a woven fabric having the organization chart of FIG. 4 woven with a dobby rapier type loom was used as the planar body. As the warp yarn (A), PET yarn (110 dtex / 36 f / 1, manufactured by Riki Co., Ltd.) was used. As the warp yarn (B), a low melting point PET yarn (trade name: Cornetta 30/1, manufactured by Unitika Fiber Co., Ltd., core melting point: 256 ° C., sheath melting point: 160 ° C.) was used as the warp yarn (B). As the weft thread (1), an elastic thread PTT monofilament thread (200 dtex / 1f, manufactured by Uniplus Co., Ltd.) was used. The warp yarns were arranged as A, A, A, A, A, and B, and the weft yarns were arranged as one solid. In addition, the warp density of the sheet was set to 60 / inch including three 20 wings, and the weft density was set to 120 / inch. And in Example 1, what was heat set (dry heat 180 degreeC x 90 sec) to the woven raw fabric was used as the planar body. By performing heat setting in this manner, the low melting point PET yarn was melted and solidified to form a reinforcing portion (linear shape) on the planar body. The obtained planar body was 62 inch (1575 mm) in length and the air permeability was 127.2 cm ³ / cm ² · s (see the measurement method in paragraph [0018] of the present specification).

  Further, a substantially rectangular wire material (φ6 mm steel material) was used as the core part of the support, and the width dimension (distance between the wire centers in the sheet width direction) was set to 316 mm. Next, the planar body was placed on the support in a tensioned state (a state stretched by 1.5% in the sheet width direction). In this state, the molding material (material: polyacetal) was poured toward the core while passing through the planar body, and the planar body was integrally attached while molding the covering around the core. And the support member of Example 1 was formed by cutting the edge part of a planar body and adjusting the shape.

[Comparative Example 1]
In Comparative Example 1, a woven fabric having the organization chart of FIG. 4 woven by a dobby rapier type loom was used as the planar body. As the warp yarn (A), PET yarn (167 dtex / 36 f / 1, manufactured by Kanebo Textile Co., Ltd.) was used. As the weft yarn (1), an elastic yarn, PTT monofilament yarn (1000 dtex / 1f, manufactured by Uniplus Co., Ltd.) was used. The warp yarn arrangement was A solid, and the horizontal yarn arrangement was 1 solid. In addition, the warp yarn density of the planar body was set to 100 / inch including four 25 wings, and the weft yarn density was set to 36 / inch. In Comparative Example 1, the woven raw fabric was heat set (dry heat 180 ° C. × 90 sec), and then back-coated with an acrylic resin (23 g / m ² ) was used as a planar body. The obtained planar body was 62 inch (1575 mm) in length and the air permeability was 1.45 cm ³ / cm ² · s. Other conditions were the same as in Example 1.

[Comparative Example 2]
In Comparative Example 2, a woven fabric having the organization chart of FIG. 4 woven by a dobby rapier type loom was used as the planar body. As the warp yarn (A), PET yarn (110 dtex / 36 f / 1, manufactured by Riki Co., Ltd.) was used. Further, as the weft yarn (1), an elastic yarn, PTT monofilament yarn (200 dtex / 1f, manufactured by Uniplus Co., Ltd.) was used. The warp yarn arrangement was A solid, and the horizontal yarn arrangement was 1 solid. In addition, the warp density of the sheet was set to 60 / inch including three 20 wings, and the weft density was set to 120 / inch. And in the comparative example 2, what was heat set (dry heat 180 degreeC x 90 sec) to the woven raw fabric was used as the planar body. The obtained planar body was 62 inches (1575 mm) in length. Other conditions were the same as in Example 1.

[Results and discussion]
In the support member of Comparative Example 1, the molding material did not pass through the planar body, and the covering portion could not be formed around the core portion. Further, in the support member of Comparative Example 2 (no fused yarn), the constituent yarns at the end of the planar body at the time of cutting were frayed, and the workability of the sewing work was poor. In contrast to this, in the support member of Example 1, the molding material permeated the planar body, and a covering portion having a suitable shape could be formed around the core portion (see FIG. 5A). This is thought to be because the gap structure at the end of the planar body could be suitably maintained by forming the reinforcing portion in a linear shape on the planar body. Further, in the support member of Example 1, almost no fray occurred on the end side of the planar body during cutting. This is presumably because the fusing yarn (warp yarn (B)) was melted and solidified to prevent or reduce fraying of the end yarn of the planar member during cutting. From the above, it was found that according to the support member of Example 1, the rigidity of the planar body can be improved with good performance.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. In this embodiment, although the example which forms the linear reinforcement part 32 in 2nd thread material BY was demonstrated, it is not the meaning which limits the structure of the reinforcement part 32. FIG. For example, the reinforcing portion 32 can be formed by applying a resin to the planar body by various forming methods (application, impregnation, printing, etc.). Moreover, although the linear reinforcement part 32 was illustrated in this embodiment, it is not the meaning which limits the structure of the reinforcement part 32. FIG. For example, the reinforcing portion can take various shapes such as a dot shape and various linear shapes (lattice shape, wave shape). Moreover, in this embodiment, although the structure of the coating | coated part 29 was illustrated, it is not the meaning which limits the structure of the part. For example, the covering portion can be formed on at least a part of each side frame portion, the front frame portion, and the rear frame portion, and can also be formed continuously or intermittently on the entire circumference of the support.

  Moreover, in this embodiment, although the textile fabric which has the structure | tissue structure of FIG. 4 was illustrated as the planar body 20b, the structure | tissue structure of a planar body can be changed suitably according to a sheet | seat structure. For example, the first yarn material can be used in a ratio of one to a plurality of second yarn materials. Further, the second yarn material can be used for at least one of the warp yarn and the weft yarn. Further, the number of deniers and the number of filaments of each thread material can be appropriately changed, and the number of jumps between the respective thread materials can be appropriately set. Moreover, in the planar body as a knitted fabric, the second yarn material can be used for a part of the constituent yarns of the knitted fabric, and the first yarn material can be used for the remaining constituent yarns. In the present embodiment, the fixed end portion and the free end portion are formed on the planar body. However, the entire edge of the planar body can be fixed to the covering portion (the free end portion is omitted). In the present embodiment, the seat cushion has been described as an example, but the configuration of the present embodiment can be applied to various seat configurations such as a seat back. The seat frame can take various forms in addition to the frame shape. The configuration of the present embodiment can be applied to all vehicle seats such as vehicles, airplanes, and trains.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 4S Seat cover 4P Seat pad 4F Seat frame 9 Slide rail 20 Support member 20a Support body 20b Planar body 22 Front frame portion 24 Side frame portion 24 Each side frame portion 26 Rear frame Portion 28 core portion 29 covering portion 32 reinforcing portion 34 fixed end portion 36 free end portion

Claims (2)

A seat component such as a seat cushion or a seat back is provided, and the seat component includes a seat frame that forms a seat skeleton, a seat pad that elastically supports an occupant with a seat outer shape, and the seat frame. A support member that can be disposed to support the seat pad;
The support member includes a support body that can be attached to the seat frame, and a planar body that is stretched within the support body and can support the seat pad, and a resin-made reinforcing portion is provided on the planar body. After forming, in the vehicle seat having a configuration in which an end portion of the planar body is integrally attached to the covering portion while forming a resin covering portion on the support body,
The planar body is a quadrangular surface material having a gap that allows entry of the molding material of the covering portion, and a pair of fixed end portions attached to the support body, and a non-attached state to the support body A pair of free ends,
The elastic portion is formed linearly on the planar body and is arranged from one of the pair of free ends toward the other, and an elastic yarn having rubber elasticity, which is a constituent yarn of the planar body, A vehicle seat disposed from one of a pair of fixed ends toward the other . The planar body is a woven or knitted fabric comprising a first yarn material made of natural fiber or synthetic fiber and a second yarn material having a lower melting point than the first yarn material as constituent yarns,
The vehicle seat according to claim 1, wherein the reinforcing portion is formed in a linear shape by melting and solidifying the second thread material.

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