JP2016199166A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a part of a seat cover to be mounted on a seat pad while being dragged in toward the pad through a seat heater, with a comparatively simple structure.SOLUTION: The vehicular seat is structured so that at least part of a sewing part SEW6 is mounted on a seat pad 4P through a mounting part 78 of the same quality of material as the quality of material of the seat pad 4P while passing through a hole part 72 of a seat heater 32A, where the mounting part 78 is formed by impregnation of a molding material for the seat pad 4P to at least part of the sewing part SEW6 through the hole 72 and subsequent curing thereof at the time of molding the seat pad 4P.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a vehicle seat including a seat pad, a seat cover, and a seat heater disposed between the seat pad and the seat cover.

  As this type of vehicle seat, a vehicle seat including a seat pad, a seat cover, and a seat heater is known (see Patent Document 1). The seat pad is a member that can support the occupant with the outer shape of the seat, and is formed with a laterally concave groove having a substantially U-shaped cross section that extends in the seat width direction. The seat cover is a bag-like member that covers the seat pad, and is formed by stitching a plurality of skin pieces. The seat cover is formed with a linear stitching portion formed by stitching together the ends of adjacent skin pieces, and the stitching portion is disposed so as to face the lateral concave groove while extending in the seat width direction. The seat heater is a surface material capable of generating heat, and is disposed between the seat pad and the seat cover. The seat heater is provided with a long through hole in the sheet width direction, and the through hole opens at a position where it can face the lateral groove.

  In the known technique, a pulling piece is provided at the stitching portion of the seat cover, and the wire material held by the pulling piece is arranged along the laterally concave groove. Further, another wire material is also provided in the lateral groove, and this other wire material is arranged facing the wire material of the pulling piece. And after arrange | positioning a seat heater on a seat pad, these are coat | covered with a seat cover. At this time, the stitched portion of the seat cover is pulled into the lateral groove through the through hole of the seat heater together with the wire member of the pulling piece. In this state, the wire material and another wire material are locked by a ring-shaped ring material, so that the stitched portion of the seat cover can be secured in the laterally recessed groove in a retracted manner.

Japanese Utility Model Publication No. 04-83835

  By the way, in the configuration of the known technique, a plurality of wire materials, pulling pieces, and ring materials are indispensable as a configuration for fastening the stitched portion of the seat cover in the laterally recessed groove. For this reason, the configuration of the known technique is not a configuration that can be easily adopted because the number of parts of the sheet increases and the configuration becomes complicated. The present invention was devised in view of the above-mentioned points, and the problem to be solved by the present invention is to attach a part of the seat cover to the seat pad side through the seat heater with a relatively simple configuration. There is.

  As means for solving the above-mentioned problems, a vehicle seat according to a first aspect of the present invention is disposed between a resin-made seat pad that forms a seat outline, a seat cover that covers the seat pad, and the seat pad and the seat cover. A seat heater. The seat cover is formed by stitching a plurality of skin pieces, and a linear stitching portion is formed by stitching the ends of adjacent skin pieces together. In the present invention, the seat pad is integrated with the seat cover and the seat heater simultaneously with molding. At this time, at least a part of the stitched portion is attached to the seat pad through the seat heater as viewed in the extending direction of the stitched portion, but it is desirable that this type of mounting configuration be as simple as possible.

  In the present invention, the sheet heater includes a planar substrate, a hole penetrating the substrate in the thickness direction, and a linear heater wire disposed on the substrate while avoiding the hole. Therefore, at least a part of the stitched portion is configured to be attached to the seat pad through an attachment portion made of the same material as the seat pad while passing through the hole of the seat heater. The mounting portion is formed by curing the seat pad molding material after impregnating at least a part of the stitched portion through the hole when the seat pad is molded. In the present invention, the attachment portion can be formed by the seat pad itself by providing a hole in the seat heater and allowing the molding material of the seat pad to impregnate the stitched portion. In this way, at least a part of the stitching portion can be attached to the seat pad by the attachment portion formed of the seat pad itself.

  The vehicle seat of the second invention is the vehicle seat of the first invention, and the hole portion opens larger than the stitched portion when viewed in a direction orthogonal to the direction in which the stitched portion extends. In the present invention, at least a part of the stitched portion can be securely attached by the seat pad through the hole portion that opens relatively large.

  According to the first invention of the present invention, a part of the seat cover can be attached while being pulled to the seat pad side through the seat heater with a relatively simple configuration. According to the second invention, a part of the seat cover can be reliably attached to the seat pad side through the seat heater.

It is a partial perspective view of a vehicle seat. It is a top view of a seat pad It is a perspective view of a seat cover. It is a reverse view of a part of seat cover. It is a top view of a plurality of seat heaters. It is sectional drawing of a seat cover, an adhesion part, and a seat heater. It is sectional drawing of a part of seat cushion. It is sectional drawing of a part of seat cover. It is sectional drawing of a part of seat cushion. It is an expanded sectional view of a part of seat cushion. It is a schematic sectional drawing of the shaping | molding die of a seat pad.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each figure, the reference symbol F is in front of the vehicle seat, reference symbol B is in the rear of the vehicle seat, reference symbol UP is in the upper part of the vehicle seat, reference symbol DW is in the lower part of the vehicle seat, reference symbol R is on the right side of the vehicle seat, A symbol L is attached to the left side of the sheet. In FIG. 9 and FIG. 11, the adhesive portion is omitted for convenience. The vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these 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). In the present embodiment, the seat back 6 is connected to the rear portion of the seat cushion 4 so that the seat back 6 can be raised and lowered, and the headrest 8 is disposed on the upper portion of the seat back 6 (standing state).

  1 to 5, the seat cushion 4 includes the basic configuration (4F, 4P, 4S), the air blowing member 9, the plurality of seat heaters 31, 32A, 32B, and the plurality of bonding portions 51. (Details of each member and the like will be described later as appropriate). Here, the air blowing member 9 is a hollow box (cylindrical) and incorporates an air blowing mechanism. As the blower mechanism, for example, a centrifugal mechanism (a mechanism that blows air in the centrifugal direction while sucking air from the apparatus axial direction) can be used. Examples of this type of air blowing mechanism include multi-blade fans (sirocco fans), plate fans, turbo fans, airfoil fans, and limit load fans. In the present embodiment, the air blowing member 9 is disposed on the back surface side of the seat pad 4P while being fixed to the seat frame 4F (typically a substantially rectangular frame made of metal).

  In the present embodiment, a plurality of seat heaters 31, 32A, 32B are disposed between the seat pad 4P and the seat cover 4S (via a plurality of adhesive portions 51 to 56) as will be described later. And in the center front part of the seat cushion 4, the gas sent out from the ventilation member 9 passes the seat pad 4P, the specific seat heater (31), and the seat cover 4S, and blows outside from the seating surface side. At this time, in the above-described sheet configuration, there is a concern that the air blowing performance deteriorates due to a portion having poor air permeability (specific adhesive portions 51, 52, etc.) hindering the flow of gas. Therefore, in the present embodiment, a specific seat heater (31) is disposed with a good performance (so that air blowing performance can be suitably maintained) between the seat cover 4S and the seat pad 4P with the configuration described later. It was decided.

  Furthermore, in the present embodiment, with reference to FIG. 9, a part of the seat cover 4S is attached to the seat pad 4P side in a retracted manner on the right side portion of the seat cushion 4 to be described later. At this time, a part of the seat cover 4S is drawn into the seat pad 4P side through a specific seat heater (32A). In this type of configuration, a part of the seat cover 4S is specified by a relatively simple configuration. It is desirable to attach the sheet pad 4P while pulling it through the sheet heater (32A). Therefore, in this embodiment, a part of the seat cover 4S is attached while being pulled to the seat pad 4P side through a specific seat heater (32A) by a relatively simple configuration (attachment portion 78) described later. Hereinafter, each configuration will be described in detail.

[Seat pad]
2 and 7, the seat pad 4P is a resin member (substantially rectangular) that can elastically support an occupant, and includes a top plate main portion 4a, a top plate side portion 4b, and a gas. The passage portion 10 is capable of passing through. Kind of the resin constituting the seat pad 4P is not particularly limited, polyurethane foam ^{(density: 10kg / m 3 ~60kg / m} 3) can be exemplified a foaming resin such. And the top-plate main part 4a is a flat site | part of the seat pad 4P center with reference to FIG. With reference to FIG. 8, the top plate main portion 4a of the present embodiment has a shape that rises while curving upward on the seat rear side. Moreover, with reference to FIG. 9, the top plate side part 4b is a protrusion part arrange | positioned at the right side and the left side of the top plate main part 4a, for example, can support a passenger | crew's side part at the time of cornering driving | running | working.

  And the flow-path part 10 consists of several through-holes which penetrate the seat pad 4P in the thickness direction with reference to FIG.2 and FIG.7, and has the several blower outlets 11-13 (formation method of a flow-path part) Will be described later). A plurality of air outlets (the central air outlet 11, the inner air outlet 12, and the outer air outlet 13) are formed at appropriate intervals on the front part (front surface) of the seat pad 4P, and are respectively seated occupant legs (illustrated). (Omitted) For example, in this embodiment, the central outlet 11 (substantially rectangular shape) is formed at the front center of the seat pad 4P. A plurality of inward outlets 12 are formed inside the occupant legs (sitting state), and a plurality of outer outlets 13 are formed outside the occupant legs (sitting state). In this embodiment, referring to FIGS. 1 and 7, the opening (not shown) on the back surface of the seat pad 4 </ b> P of the flow path portion 10 is communicated with the air blowing member 9 via a duct member (not shown). Thus, referring to FIGS. 1, 2, and 7, the gas sent out from the air blowing member 9 is blown out from each of the air outlets 11 to 13 while entering the flow path portion 10.

[Seat Cover]
The seat cover 4S is a planar member that can cover the seat pad 4P (seat side) with reference to FIGS. 3, 8, and 9, and is formed by sewing a plurality of skin pieces (SP1 to SP7, etc.). it can. For example, in the present embodiment, the center of the seat cover 4S (the portion covering the top plate main portion) can be formed by the first skin piece SP1 to the third skin piece SP3. The first skin piece SP1 is a large piece (long before and after the seat) and covers the front portion of the top plate main portion 4a. The second skin piece SP2 is a small piece (short in the longitudinal direction of the seat) and covers an intermediate portion of the top plate main portion 4a. The third skin piece SP3 is also a small piece and covers the rear portion of the top plate main portion 4a. A hook member FM is appropriately provided on the peripheral surface of the seat cover 4S (for example, the end portion of the rear skin piece SP4), and can be locked to the seat frame 4F or the like.

  Further, the side portion of the seat cover 4S (the portion covering the top plate side portion 4b) can be formed by stitching a plurality of skin pieces. For example, in the present embodiment, referring to FIGS. 3 and 9, the right side portion of the seat cover 4S (the portion covering the top plate side portion 4b) is divided into a fifth skin piece SP5 to a seventh skin piece SP7, and a kamachi portion. Can be formed with a skin piece SPr covering the surface. The fifth skin piece SP5 is a skin piece that is long before and after the seat, and covers the upper surface of the top plate side portion 4b. Further, the sixth skin piece SP6 and the seventh skin piece SP7 are slightly short skin pieces that extend in the front-rear direction of the seat, and cover the inner surface front side of the top plate side portion 4b. The sixth skin piece SP6 of the present embodiment is a small skin piece having a substantially horizontal L shape, and is curved upward on the front side of the seat and covered on the inner surface of the top plate side portion 4b when the seat cover 4S is covered. Coating. The seventh skin piece SP7 is a medium-sized skin piece having a substantially inverted horizontal L shape, and covers the lower part of the inner surface of the top plate side part 4b while the seat cover 4S is covered, and the upper part on the rear side of the seat. Bend.

  And between the adjacent skin pieces, referring to FIG. 3, FIG. 8 and FIG. For example, in the center of the seat cover 4S, the stitched portion SEW1 of the first skin piece SP1 and the second skin piece SP2 is curved forward in the seat side portion while extending in the seat width direction (configuration is excellent in design). Similarly, the stitched portion SEW2 of the second skin piece SP2 and the third skin piece SP3 also curves forward at the seat side while extending in the seat width direction. The stitched portion SEW3 of the third skin piece SP3 and the rear skin piece SP4 typically extends linearly in the sheet width direction.

  Further, also on the side portion of the seat cover 4S, a stitched portion is formed between adjacent skin pieces (in each drawing, only the stitched portion on the right side portion of the seat cover is provided with a reference for convenience). For example, on the right side of the seat cover 4S, referring to FIGS. 3 and 9, a fifth skin piece SP5 and a plurality of skin pieces adjacent thereto (third skin piece SP3, sixth skin piece SP6, seventh skin) Between the pieces SP7), a fifth stitching part SEW5 extending in the longitudinal direction of the sheet is formed. Further, on the front side of the inner surface of the top plate side portion 4b, a sixth stitching portion SEW6 is formed between the sixth skin piece SP6 and the seventh skin piece SP7 and extends in the front-rear direction of the seat. Referring to FIG. 3, the sixth stitching portion SEW6 is curved in a crank shape following the shapes of the sixth skin piece SP6 and the seventh skin piece SP7, and then curved upward after being curved upward on the front side of the seat. It extends in a shape, and further curves upward on the back side of the sheet (is a configuration having excellent design properties). Between the top plate side portion 4b and the top plate main portion 4a, between the seventh skin piece SP7 and a plurality of skin pieces adjacent thereto (first skin piece SP1 to third skin piece SP3) A seventh sewing portion SEW7 extending in the direction is formed. In addition, with reference to FIG. 9, the sewing part SEW4 is formed between the skin piece SPr and the fifth skin piece SP5 that cover the keratin part.

[First part]
Each skin piece of the seat cover 4S is formed by stacking and integrating the first portion 21 and the second portion 22 with reference to FIGS. 2 and 6. The 1st site | part 21 is formed with the surface material 21a and the flexible material 21b, and is arrange | positioned at the seating surface side of the seat cover 4S. The surface material 21a is a surface material provided with air permeability, and forms a seating surface of the seat cover 4S. Examples of the material of the surface material 21a of this type include fabrics (woven fabrics, knitted fabrics, unemployed cloths having through holes), leathers having through holes (natural leather, synthetic leather), and net bodies. The flexible material 21b is a flexible surface material having air permeability, and is integrated with the back surface side of the front material 21a. As the material of such a flexible material 21b, highly air-permeable slab urethane (air ^{permeability: 200cc / cm 2 · sec~400cc /} cm 2 · sec), cotton material, 3D net member (knitting said three-dimensional shape of the fiber Can be exemplified.

[Second part (opening)]
4 and 5, the second part 22 is a part laminated on the back surface side of the first part 21 and has a plurality of openings 24 (in addition, in FIGS. 4 and 5, Only some openings are labeled). Here, the second portion 22 is formed of a material that is less breathable or non-breathable than the first portion 21, and suppresses intrusion of a forming material (liquid resin) of a seat pad 4P described later as much as possible. Can do. As a material for the second region 22 of this type, low air permeability of the slab urethane (air ^{permeability: 0cc / cm 2 · sec~10cc /} cm 2 · sec), leather, resin layer (film-like) can be exemplified. Each of the plurality of openings 24 is a hole through which gas can pass, and penetrates the second part 22 in the thickness direction (the first part 21 is exposed). In the present embodiment, when the seat cover 4S is covered (described later), a plurality of openings 24 (substantially circular in top view) can be formed at positions that can face each of the air outlets (11-13).

[Seat heater]
The plurality of seat heaters (center seat heater 31, first side seat heater 32A, second side seat heater 32B) are members (planar shape) having air permeability with reference to FIGS. 1 and 5. Each has a heater function. The central seat heater 31 is a substantially rectangular face material (relatively long in the front and rear direction of the seat) that follows the central shape of the seat cover 4S, and is disposed at the center of the seat cover 4S (where the top plate main portion 4a is covered). Is done. The first side seat heater 32A, which will be described later, is a substantially rectangular face material (relatively short before and after the seat), and is disposed on the right side of the seat cover 4S (where the right top plate side 4b is covered). The The second side seat heater 32B is also a substantially rectangular face material and is disposed on the left side of the seat cover 4S. The seat heaters 31, 32A, and 32B are electrically connected to a power source (not shown) through a wiring member 34 that is divided into three parts.

  The center seat heater 31 is divided into a plurality of sections (first function part 31a to fourth function part 31d) with reference to FIGS. 3 to 5 and arranged across the plurality of skin pieces SP1 to SP3. Is done. The 1st functional part 31a and the 2nd functional part 31b are parts which the front part of the center seat heater 31 is divided into two forks, and are arrange | positioned facing 1st skin piece SP1. The first functional part 31a and the second functional part 31b are arranged with an appropriate interval in the seat width direction with reference to FIG. 2 and FIG. 13 has a width dimension that can be placed across 13. Moreover, the 3rd function part 31c is a site | part located in the intermediate part of the center sheet | seat heater 31, and can face 2nd skin piece SP2. And the 4th functional part 31d is a site | part located in the rear part of the center seat heater 31, and can face 3rd skin piece SP3. And the 1st function part 31a (and 2nd function part 31b) and the 3rd function part 31c are connected by the bridge part 31e (location in which the hole part was formed) arrange | positioned among these. Similarly, the third functional part 31c and the fourth functional part 31d are connected by a bridging part 31f arranged between them.

  The center seat heater 31 is formed by stacking and integrating the energizing member 40, the ventilation member 42, and the low ventilation member 44 with reference to FIG. 6. The energizing member 40 is a surface material provided with conductive wires (metal wire, carbon fiber, plated wire, etc.) that can be energized, and has appropriate air permeability (for example, air permeability not inferior to the surface material 21a or the flexible material 21b). . The ventilation material 42 is a surface material having substantially the same air permeability as that of the flexible material 21b, and can be formed of the material exemplified by the flexible material 21b. The low ventilation material 44 is formed of a material that is less breathable than the ventilation material 42 or a non-breathable material, and can be formed of the material exemplified in the second portion 22. And the center sheet heater 31 can exhibit a heater function (heating function) by making the energization material 40 into an energized state and generating heat.

  The first side seat heater 32A is a surface material that heats the front side of the inner surface of the top plate side portion 4b arranged on the right side with reference to FIGS. 3, 9, and 10, and the sixth skin piece SP6. And the seventh skin piece SP7. Referring to FIG. 5, the first side sheet heater 32 </ b> A includes a planar substrate 70, a hole 72 that penetrates the substrate 70 in the thickness direction, and a heater wire 74 described later. The base material 70 is a substantially rectangular face material that forms the outer shape of the first side seat heater 32 </ b> A, and can be formed of, for example, a low air-permeable material or a non-air-permeable material exemplified in the second portion 22. The hole 72 is a substantially rectangular through hole that penetrates the first side seat heater 32A in the thickness direction, and is formed at a position where it can be disposed facing at least a part of the sixth sewing part SEW6. Moreover, the 2nd side seat heater 32B is a surface material which heats the inner surface front side of the top plate side part 4b arrange | positioned on the left side. The second side seat heater 32B has the same configuration as the first side seat heater 32A except that it does not have the hole 72.

  The heater wire 74 is a wire that can generate heat when energized, and is attached to the surface of the base material 70 facing the seat cover 4S by a technique such as sewing or bonding. Examples of this type of heater wire 74 include metal wires such as copper and aluminum, alloy wires such as nichrome wires, and plated wires. The plated wire has a wire that serves as a non-conductive or conductive core, and a plated layer of metal or alloy. The heater wire 74 is disposed on the base material 70 while avoiding the hole 72, and in this embodiment, the surface of the base material 70 is formed so as to form a substantially U shape in a top view while meandering at an appropriate pitch. Mounted on. Then, both ends of the heater wire 74 are connected to the wiring member 34 via the lead wire LL at the rear end of the base material 70 so that energization is possible.

[Adhesive part]
The plurality of adhesive portions (first adhesive portion 51 to sixth adhesive portion 56) are interposed between the seat cover 4S and the seat heaters 31, 32A, 32B with reference to FIGS. This is the part to be bonded. In the present embodiment, the central sheet heater 31 is bonded to the center of the seat cover 4S at the first bonding portion 51 to the fourth bonding portion 54. At this time, the first bonding portion 51 (detailed later) has a shape (slightly small) following the first functional portion 31a and bonds it to the front portion of the seat cover 4S. Further, the second bonding portion 52 (detailed later) has a shape (slightly small) following the second functional portion 31b and bonds it to the front portion of the seat cover 4S. Further, the third bonding portion 53 has a shape (slightly small) following the third function portion 31c and bonds it to the intermediate portion of the seat cover 4S. The fourth adhesive portion 54 has a shape (slightly small) following the fourth functional portion 31d and adheres it to the rear portion of the seat cover 4S.

  The pair of side seat heaters 32A and 32B are bonded to the side portion of the seat cover 4S at the fifth bonding portion 55 and the sixth bonding portion 56, respectively. That is, the first side seat heater 32 </ b> A is bonded to the right side portion of the seat cover 4 </ b> S at the fifth bonding portion 55 with reference to FIGS. 5 and 10. The fifth adhesive portion 55 is provided with a substantially rectangular through-hole 76 that is substantially the same size as or slightly larger than the hole 72 of the first side seat heater 32A. It arrange | positions in the position which can face the hole 72 at the time of adhesion | attachment. Similarly, the second side seat heater 32 </ b> B is bonded to the left side portion of the seat cover 4 </ b> S at the sixth bonding portion 56.

  And each adhesion part 51-56 can each be formed with the contact bonding layer formed with the adhesive agent, or a planar adhesive member (surface material which can be adhere | attached on both surfaces). In the present embodiment, each of the bonding portions 51 to 56 is formed of a planar bonding member and has substantially the same basic configuration. For example, as for the 1st adhesion part 51, with reference to FIG. 6, the mold release material 62 is affixed on both surfaces (front and back surfaces which can adhere and fix another member), respectively. And the sheet heater or sheet cover 4S which respond | corresponds respectively can be adhere | attached on the surface and the back surface of the 1st adhesion part 51 by making each release material 62 peel. The adhesive component of each bonded part is not particularly limited, but inorganic components such as cement and ceramic, natural components such as natural rubber and starch, semi-synthetic components such as nitrocellulose, thermoplastic resins and thermosetting resins, etc. And a resin component such as a propylene rubber and a nitrile rubber, and a composite component such as an elastomer. In addition, each adhesion part may have the adhesive strength which adhere | attaches another member so that peeling is impossible, and may have the adhesive strength which adheres (sticks) so that peeling is possible.

[Passage]
In the present embodiment, referring to FIG. 5, the first adhesive portion 51 has a plurality of passage portions (inner passage portion 60a, a pair of outer passage portions 60b, 60c). Similarly, the second bonding portion 52 has a plurality of passage portions (inner passage portions 61a, a pair of outer passage portions 61b and 61c). Here, since each of the above-described passage portions has substantially the same configuration in the first adhesive portion 51 and the second adhesive portion 52, the configuration of each passage portion will be described exclusively by taking the first adhesive portion 51 as an example. That is, each of the plurality of passage portions 60a to 60c is a through hole that penetrates the first adhesive portion 51 in the thickness direction, and gas can pass therethrough. 2, 4 and 7, the inward passage portion 60a is a substantially rectangular hole portion (slightly large) in a top view, and has a plurality of inner air outlets 12 (all) and faces each other. The opening 24 (all) to be covered has a dimension that can be covered. The inner passage portion 60a is arranged between the plurality of inner outlets 12 (all) and the corresponding openings 24 (all) when the seat cover 4S is covered (described later). The pair of outer passage portions 60b and 60c are substantially rectangular holes (slightly small) in top view with reference to FIG. 2 and FIG. It has dimensions that can cover the part 24 (all). And each outer channel | path part 60b, 60c is arrange | positioned between the opening parts 24 (all) corresponding to each outer blower outlet 13 at the time of covering (after-mentioned) of the seat cover 4S.

[Forming seat cover]
Referring to FIGS. 3 and 8, a plurality of skin pieces are stitched together to create seat cover 4S that can cover seat pad 4P (top plate main portion 4a and top plate side portion 4b). At this time, at the position corresponding to the top plate main portion 4a, the first skin piece SP1, the second skin piece SP2, and the third skin piece SP3 are arranged in this order in the rearward direction from the front of the seat, and these are machined (not shown). Suture with. At this time, in this embodiment, since each skin piece is a separate body, the skin pieces stacked in the middle surface shape can be stitched together while appropriately changing the direction (a configuration suitable for the stitching operation). For this reason, referring to FIG. 3, while appropriately changing the orientation of the first skin piece SP1 and the second skin piece SP2, these stitched portions SEW1 are formed in the seat width direction, and smoothly on the side of the seat. Can be curved. Similarly, while appropriately changing the orientation of the second skin piece SP2 and the third skin piece SP3, these stitched portions SEW2 can be smoothly curved at the sheet side portion while being formed in the sheet width direction.

  Also at the position corresponding to the top plate side portion 4b, the plurality of skin pieces are sewn with a sewing machine while being arranged in an appropriate order. For example, referring to FIG. 3, at the position corresponding to the right top plate side portion 4b, the fifth skin piece SP5, the sixth skin piece SP6 and the seventh skin piece SP7 are arranged in this order from the outside of the seat to the inside. These are stitched with a sewing machine (not shown). At this time, while appropriately changing the direction of the sixth skin piece SP6 and the seventh skin piece SP7, the sixth stitching portion SEW6 between them can be smoothly curved in the front and back of the sheet while being formed in the front and rear direction of the seat. it can.

[Integration of seat cover and seat heater]
Next, referring to FIGS. 4 and 5, the seat cover 4 </ b> S and the seat heaters 31, 32 </ b> A, 32 </ b> B are bonded and integrated by corresponding bonding portions 51 to 56. For example, in the present embodiment, referring to FIG. 5, the first adhesive portion 51 to the fourth adhesive portion 54 (surface side) are adhered to appropriate positions of the central sheet heater 31. Next, the 1st adhesion part 51-the 4th adhesion part 54 (back side) are pasted up in the proper place of the center back of sheet cover 4S with center sheet heater 31. Next, as shown in FIG.

  In this embodiment, the first functional portion 31a and the second functional portion 31b are bonded to the front portion in the center of the seat cover 4S while providing a gap between them (providing a clearance capable of disposing the central outlet 11). And unite. Further, referring to FIGS. 2, 4, and 6, in order to allow the passage of gas, the inner passage portion 60 a of the first adhesive portion 51 is made to correspond to the corresponding opening portion 24 (the opening facing the inner outlet 12. Part) Cover all of them and arrange them facing each other. Further, referring to FIGS. 2 and 4, the outer passage portions 60 b and 60 c of the first bonding portion 51 are covered while covering all corresponding openings 24 (openings facing the outer outlet 13). Arrange them face to face. Similarly, referring to FIG. 4, the inner passage portion 61 a and the outer passage portions 61 b and 61 c of the second bonding portion 52 are arranged facing each other while covering all the corresponding openings 24. .

  Similarly, the side sheet heaters 32A and 32B are bonded and integrated at appropriate positions on the back of the side part of the seat cover 4S at the fifth adhesive part 55 and the sixth adhesive part 56. For example, in the present embodiment, with reference to FIGS. 5 and 10, the first side seat heater 32A is disposed on the right side of the seat cover 4S and is disposed across the sixth skin piece SP6 and the seventh skin piece SP7. To do. At this time, while aligning the hole 72 of the first side seat heater 32A and the through-hole 76 of the fifth adhesive portion while aligning them, a part of the sixth stitching portion SEW6 is connected to the hole 72 and the through-hole 76. Expose through. In this example, referring to FIG. 10, the width dimension W1 of the hole 72 is set larger than the dimension W2 of the sixth suture part SEW6 when viewed in a direction orthogonal to the direction in which the sixth suture part SEW6 extends. it can. By doing so, a part of the sixth stitching portion SEW6 can be smoothly and reliably inserted into the hole 72 of the first side seat heater 32A. In this embodiment, the straight portion of the sixth suture portion SEW6 is exposed through the hole portion 72 and the through hole 76, but unlike this, the curved portion before and after the sixth suture portion SEW6 is penetrated by the hole portion 72 and the through hole portion 76. It can also be exposed through the hole 76.

[Forming the seat pad (covering the seat cover)]
In the present embodiment, the seat pad 4P is molded and integrated with the seat cover 4S (each seat heater) with reference to FIGS. 7 and 8 using the molding apparatus IM of FIG. At this time, the seat cover 4S is disposed in advance in the cavity (molding space) of the molding apparatus, and the seat heater side (low air-permeable material 44) is directed to the inside of the cavity. In the present embodiment, referring to FIG. 8, the top plate main portion 4a of the seat pad 4P has a shape that rises while curving upward on the seat rear side. Therefore, following the shape of the seat pad 4P, the seat cover 4S is arranged in the cavity while being curved so that the rear side of the seat cover 4S gradually becomes upward.

  Then, the molding material MM (liquid resin) is foamed in the cavity to mold the seat pad 4P. At this time, in this embodiment, referring to FIG. 7, excessive impregnation of the molding material MM on the central seat heater (ventilating material 42) side in the top plate main portion 4 a is suppressed by the low venting material 44. 4 and 7, excessive impregnation of the molding material MM into the seat cover 4S portion (soft material 21b) not covered with the seat heaters 31, 32A, 32B is suppressed at the second portion 22. It is done. Thus, the seat cover 4S can be integrated along the outer surface of the seat pad 4P without losing the flexibility of the first portion 21 as much as possible. In particular, in the present embodiment, the seat cover 4S can be disposed in close contact with the rear portion (the raised portion) of the top plate main portion 4a together with the central seat heater 31 (a trouble such as only the seat cover 4S being lifted is avoided).

(Formation of mounting part)
Further, referring to FIG. 11, the right side top plate side portion 4b is formed and integrated with the seat cover 4S and the first side seat heater 32A (in FIG. 11, the bonding portion is omitted for convenience). At this time, excessive impregnation of the molding material MM is suppressed by the base material 70 of the first side seat heater 32A. Referring to FIG. 10, the molding material MM impregnates the sixth stitching portion SEW6 through the hole 72 of the first side seat heater 32A. Thus, the molding material MM impregnated in the sixth stitching portion SEW6 is cured, so that the attachment portion 78 that is a portion for attaching the sixth stitching portion SEW6 to the seat pad 4P is formed. Since the attachment portion 78 is formed of the seat pad 4P itself, a separate member for attaching the sixth stitching portion SEW6 and the seat pad 4P is unnecessary, which contributes to a reduction in the number of parts of the seat and a relatively simple configuration. Become.

  7 and 9, the seat pad 4P, the seat heaters 31, 32A, 32B, and the seat cover 4S are integrated, and then the flow path portion 10 is formed in the seat pad 4P. At this time, a hole is punched in the front portion of the seat pad 4P with a punch member (not shown) from the rear surface side (a portion corresponding to the formation portion of the passage portion). At this time, the punch member penetrates through the low ventilation material 44 of the central seat heater 31 and reaches the ventilation material 42 while penetrating the seat pad 4P (forming the flow path portion 10). In this way, in this embodiment, referring to FIGS. 2, 4 and 7, the flow channel portions 10 (each outlet) can be formed in a face-to-face relationship with each of the passage portions 60a and the like and the opening portion 24 (passage portions). And the opening can be placed in the gas movement path). Similarly, with reference to FIGS. 2 and 4, the flow path portion 10 can be formed in a face-to-face manner in each passage portion 61 a of the second adhesive portion 52 and the opening 24 of the second portion 22.

[Use of blower and seat heater]
With reference to FIG. 1, the vehicle seat 2 on which the occupant is seated is caused to exhibit both the air blowing function and the heater function (assuming a configuration excellent in comfort). In the present embodiment, the seated occupant can be heated by energizing each seat heater 31, 32A, 32B (exhibiting the heater function). Then, the gas sent out from the air blowing member 9 passes through the seat pad 4P (flow path portion 10), the central seat heater 31, and the seat cover 4S and blows out of the seat. At this time, referring to FIG. 2, FIG. 4 and FIG. 7, on the front part (flow path part 10) of the seat cushion 4, the first adhesive part 51, the second adhesive part 52, and the second part of the seat cover 4S. The part 22 is arranged. For this reason, in the above-described sheet configuration, there is a concern that the air blowing performance deteriorates due to a portion having poor air permeability (adhesive portions 51, 52, second portion 22) obstructing the gas flow.

  Therefore, in the present embodiment, referring to FIGS. 4, 5, and 7, passage portions 60 a to 60 c (61 a to 61 c) are provided in the first bonding portion 51 (second bonding portion 52) and the second portion 22 is provided. An opening 24 is provided in the base. 2, 4, and 5, the passage portions 60 a to 60 c, 61 a to 61 c and the opening 24 are respectively disposed at facing positions of the flow path portion 10 (in the middle of the gas movement path). By doing so, the gas sent out from the blower member 9 can smoothly pass through the bonding portions 51 and 52 and the second portion 22 through the passage portions and the openings. For example, with reference to FIG. 7, the gas sent out from the flow path part 10 passes through the first functional part 31a and reaches the first adhesive part 51 (part inferior in air permeability). At this time, the gas is smoothly sent out to the seat cover 4S side by passing through the inner passage portion 60a. Then, the gas passes through the first part 21 while passing through the opening 24 of the second part 22 and is smoothly blown out of the seat. For this reason, in a present Example, the gas sent out from the ventilation member 9 can be blown out outside without being disturbed as much as possible by the site | part (adhesive part 51,52, 2nd site | part 22) inferior to air permeability.

  As described above, in the present embodiment, each of the sheet heaters 31, 32A, 32B is disposed via the corresponding adhesive portions 51 to 56 between the seat cover 4S and the seat pad 4P (stablely disposed). . And the specific adhesion part 51 (52) is set as the structure which does not inhibit the flow of the gas sent out toward the seat cover 4S from the seat pad 4P as much as possible by passage part 60a-60c (61a-61c). Further, in this embodiment, even when the seat pad 4P is integrated with the seat cover 4S simultaneously with the molding, the second portion 22 can prevent the molding material from entering the first portion 21 as much as possible (first). It is set as the structure which does not impair the softness | flexibility of the one part 21 as much as possible. Further, the second portion 22 is configured not to obstruct the flow of gas passing through the seat cover 4S as much as possible by the opening 24. In this embodiment, by covering the opening 24 with the passage portions 60a to 60c (61a to 61c), the gas is smoothly sent from the central seat heater 31 side toward the seat cover 4S. For this reason, according to the present embodiment, the central seat heater 31 can be disposed with good performance between the seat cover 4S and the seat pad 4P.

  In the present embodiment, the hole portion 72 is provided in the first side seat heater 32A to allow the molding material MM to impregnate the sixth sewing portion SEW6, thereby forming the attachment portion 78 with the seat pad 4P itself. can do. In this way, at least a part of the sixth sewing portion SEW6 can be attached to the seat pad 4P by the attachment portion 78 formed of the seat pad 4P itself. Further, in the present embodiment, at least a part of the sixth stitching portion SEW6 can be reliably attached to the seat pad 4P through the hole portion 72 that is relatively open. Therefore, according to the present embodiment, a part of the seat cover 4S can be attached while being pulled to the seat pad 4P side through the first side seat heater 32A with a relatively simple configuration. In this embodiment, by holding the sixth stitching portion SEW6 with the attachment portion 78 having a simple configuration, the seat cover 4S is prevented from being lifted from the seat pad as much as possible, as shown by a two-dot broken line in FIG. it can.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. For example, in this embodiment, the example which integrated the seat cover 4S and the seat pad 4P at the time of shaping | molding was demonstrated. Alternatively, the seat cover can be covered after the seat pad is formed. In this case, the seat heater can be integrated by adhering to the seat pad side (on the flow path portion).

  Moreover, in this embodiment, although the structure of the seat pad 4P and the seat cover 4S was illustrated, the structure of the same member can be changed suitably. For example, the configuration (shape, dimensions, formation position, number of formation) of the flow path portion (blow-out port) can be changed as appropriate according to the sheet configuration, and, for example, a plurality of the flow path portions (blower outlets) can be provided at appropriate positions on the top plate main portion and the top plate side portion. Or it can be formed singularly. Moreover, the seat cover should just have a surface material, and a soft material and a 2nd site | part can be abbreviate | omitted suitably. Further, the shape, size, and number of the skin pieces constituting the seat cover can be changed as appropriate, and the configuration of the stitched portion can also be changed as appropriate. And the structure of an opening part can also be suitably changed according to the structure of a blower outlet or a channel | path part.

  Moreover, in this embodiment, although the structure (shape, dimension, arrangement | positioning position, the number of arrangement | positioning, a function, etc.) of each seat heater 31, 32A, 32B was illustrated, it is not the meaning which limits the structure of the same member. For example, the seat heater may be configured only by a portion (planar or linear energization material) that exhibits a function. In addition, the seat heater can be formed of an elastic face material or mat material (for example, made of polyurethane foam) to have a function of reinforcing the seat cover.

  Moreover, in this embodiment, although the structure (shape, dimension, arrangement position, arrangement number) of the adhesion parts 51-56 was illustrated, the structure of the part can be suitably changed according to the structure of a seat cover or a seat pad. . For example, in the present embodiment, the adhesive portion including the passage portion is disposed at the front portion of the seat cushion, but the position of the adhesive portion can be changed according to the formation position of the flow path portion. Further, the configuration (shape, dimensions, formation position, number of formation, etc.) of the passage portion can be appropriately changed as long as gas can pass through. For example, the passage portion may be arranged slightly deviated from the air outlet or the opening of the flow path portion as long as the gas flow is not significantly inhibited. Further, the passage portion may be smaller than the air outlet or the opening as long as the flow of gas is not significantly inhibited.

  Further, in the present embodiment, the example in which the hole portion 72 is provided in the first side seat heater 32A and the sixth stitching portion SEW6 is passed is described, but this is not intended to limit the seat configuration. Moreover, the structure (shape, dimension, number of formation, formation position, etc.) of the hole can be appropriately changed according to the stitched portion to be passed. For example, a seat heater arranged to face at least one of a plurality of skin pieces constituting a seat cover is provided with a plurality or a single hole, and attached to the seat pad while being pulled through a stitched portion arranged to face the hole. be able to. That is, the configuration of the present embodiment is not limited to the top plate side portion, and can be applied to an appropriate sheet position such as the top plate main portion. The hole has a dimension that allows a part of the corresponding stitching part (for example, at least one of the straight part, the front curved part, and the rear curved part of the sixth stitched part) or the whole stitched part to pass therethrough. You may do it. Moreover, the width dimension of a hole part should just be able to let through a corresponding stitching | suture part, and does not necessarily need to be larger than the width dimension of a corresponding stitching | suture part. For example, the molding material can be suitably prevented from leaking from these gaps by narrowing the size of the hole and press-fitting the stitched portion. Moreover, the through-hole of the adhesion part arrange | positioned facing a hole part should just be able to let a corresponding stitching | suture part pass, and the through-hole of a shape and a dimension different from a hole part can also be formed in an adhesion part.

  In the present embodiment, the seat cushion 4 has been described as an example, but the configuration of the present embodiment can be applied to various seat components such as a seat back and a headrest. Moreover, the structure which can suck | inhale gas may be sufficient as a ventilation member, In this case, gas will blow off in a sheet | seat through a seat cover and a seat pad. The configuration of the present embodiment is applicable to all vehicle seats such as vehicles, airplanes, and trains.

DESCRIPTION OF SYMBOLS 2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 9 Blowing member 4F Seat frame 4P Seat pad 4S Seat cover 10 Flow path part 11-13 Air outlet 21 First part 22 Second part 24 Opening part 31, 32A, 32B Seat Heater 40 Energization material 42 Ventilation material 44 Low ventilation material 51-56 Adhesion part 60a-60c Passage part 61a-61c (Second adhesion part) Passage part 70 Sheet heater base material 72 Sheet heater material Hole 74 Heater wire 76 of sheet heater Through-hole 78 in bonding portion Mounting portion SEW1 to SEW7 Stitching portion

Claims (2)

A resin seat pad that forms a seat outer shape, a seat cover that covers the seat pad, and a seat heater disposed between the seat pad and the seat cover, wherein the seat cover includes a plurality of skin pieces Is formed, and a linear stitching portion is formed by stitching the ends of adjacent skin pieces together,
The seat pad is integrated with the seat cover and the seat heater simultaneously with molding, and at least a part of the stitched portion is attached to the seat pad in a retracted manner when viewed in the extending direction of the stitched portion. Vehicle seats in
The sheet heater has a planar substrate, a hole penetrating the substrate in a thickness direction, and a linear heater wire disposed on the substrate while avoiding the hole,
At least a part of the stitching portion is configured to be attached to the seat pad through an attachment portion of the same material as the seat pad while passing through the hole portion of the seat heater.
The vehicle seat formed by the mounting portion being hardened after the molding material of the seat pad is impregnated into at least a part of the stitched portion through the hole when the seat pad is molded. The vehicle seat according to claim 1, wherein the hole portion opens larger than the stitching portion when viewed in a direction orthogonal to a direction in which the stitching portion extends.

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