JP2020069894A - Vehicle seat and manufacturing method of vehicle seat - Google Patents

Abstract

To provide a vehicle seat whose appearance can be improved, and provide a manufacturing method of the vehicle seat.SOLUTION: Since a trim cover 30 is formed by sticking a skin material 35 to a wadding 36 in a shape corresponding to a first bent part 21a of a seat pad 20, the trim cover 30 can be easily aligned with the first bent part 21a of the seat pad 20 when the trim cover 30 covers the seat pad 20. Namely, the generation of wrinkles in the skin material 35 due to the difference in the elasticity between the skin material 35 and the wadding 36, and the generation of a gap between the skin material and the seat pad 20 due to the floating of the skin material 35 can be suppressed. As a result, the appearance of the vehicle seat 1 can be improved.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vehicle seat and a vehicle seat manufacturing method, and more particularly to a vehicle seat and a vehicle seat manufacturing method that can improve the appearance.

  In vehicle seats, there is known a technique of forming a trim cover by adhering a wadding to the back surface of a skin material in order to soften the initial touch of the trim cover when getting on the vehicle.

  Here, in a vehicle seat, the surface of the pad is formed in a curved concave shape (the concave portion that is recessed in the thickness direction is formed in the pad) in order to improve the fit of the occupant's hips and back. Reference 1).

JP, 2017-94982, A

  However, in the above-described conventional vehicle seat, if the pad is covered with the trim cover to form the recessed shape of the pad (the trim cover is aligned with the recessed portion of the pad), the stretchability of the skin material and the wadding is reduced. Due to the difference, there is a problem that wrinkles are generated in the skin material or the skin material floats and a gap is formed between the skin material and the pad, which deteriorates the appearance.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle seat that can improve the appearance and a method for manufacturing the vehicle seat.

  In order to achieve this object, the vehicle seat of the present invention comprises a pad having a recessed portion in the thickness direction and a trim cover for covering the pad, the trim cover being adhered to the skin material and the skin material. The trim cover is formed by adhering the skin material and the wadding in a shape corresponding to the recess of the pad.

  The method for manufacturing a vehicle seat of the present invention includes a pad having a recessed portion in the thickness direction, and a trim cover that covers the pad, the trim cover being a skin material, and a wadding bonded to the skin material. A method for manufacturing a vehicle seat comprising: a first jig and a second jig, wherein the skin material and the wadding are superposed with an adhesive material interposed therebetween. Arranging step of arranging, and driving at least one of the first jig and the second jig in which the skin material, the adhesive material, and the wadding are arranged between opposing surfaces by the arranging step. And a bonding step of pressing the skin material and the wadding between the facing surfaces of the first jig and the second jig to bond them with the adhesive material, the first jig and the second jig The opposite surface of is formed in a shape corresponding to the pad It is.

  According to the vehicle seat of claim 1, when the trim cover is put on the pad, the skin material and the wadding are bonded together in a shape corresponding to the recess of the pad to form the trim cover. In addition, the trim cover can be easily fitted along the recess of the pad. That is, it is possible to suppress the occurrence of wrinkles in the skin material and the formation of a gap between the skin material and the pad due to the difference in elasticity between the skin material and the wadding. As a result, the appearance of the vehicle seat can be improved.

  According to the vehicle seat of the second aspect, in addition to the effect of the vehicle seat of the first aspect, the trim cover has the first region in which the skin material and the wadding are bonded, and the skin material and the wadding. Since the second region is set to a region including the deepest part of the recess, it is possible to suppress the influence of the difference in stretchability between the skin material and the wadding.

  That is, in the second region (the region including the deepest part of the recess), the amount of deformation (curving) between the skin material and the wadding is large, and the influence of the difference in elasticity is large. Accordingly, it is possible to prevent one of the skin material and the wadding from being pulled (pushed back) by the other due to the difference in elasticity.

  Therefore, it is possible to suppress the occurrence of wrinkles in the skin material and the formation of a gap between the skin material and the pad due to the difference in elasticity between the skin material and the wadding. As a result, the appearance of the vehicle seat can be improved.

  According to the vehicle seat of claim 3, in addition to the effect of the vehicle seat of claim 2, in the trim cover, the wadding is made longer than the skin material in the second region, and the trim material is composed of the skin material and the wading. Since a gap can be formed therebetween, it is possible to prevent the trim cover from having a convex shape (reversing) on the side opposite to the concave portion.

  That is, in the second region, the wadding has a convex shape in a direction away from the skin material (direction forming a gap between the wadding and the skin material). Therefore, when the trim cover tries to deform (reverses) into a convex shape on the side opposite to the concave portion of the concave portion, a repulsive force of the wadding is generated against the deformation, and the trim cover can be opposed. As a result, it is possible to prevent the trim cover from having a convex shape (reversing) on the side opposite to the concave portion.

  According to the vehicle seat of the fourth aspect, in addition to the effect of the vehicle seat of the third aspect, the second region has the other edge portion that faces one edge portion of the trim cover to the other edge portion. It is possible to suppress wrinkling from occurring in the wading in the first region because the continuous region is set up to.

  That is, in the second region, where the wadding is made longer than that of the skin material, the second region is not continuous to one edge portion and the other edge portion of the trim cover, and the one edge portion side and the other edge portion side. If the first region is formed on the edge side of the, the wadding has a surplus in the vicinity of the boundary with the second region (the wadding is longer than the skin material), and the surplus part is wavy and wrinkled. Become.

  Here, the first wire, which is arranged on the trim cover and restrains the trim cover, and the second wire, which is embedded in the pad, are connected by a connecting member, and the trim cover is arranged along the surface of the pad. There is a vehicle seat that does (Japanese Patent Laid-Open No. 2017-140099).

  Usually, a vehicle seat is formed by curving a concave shape toward the back side so that a front center portion of a seat back which serves as a back of an occupant is along the back of the occupant. In addition, convex portions that project toward the front side are formed at both ends of the seat back in the front view in the horizontal direction so that the occupant does not move in the horizontal direction. Therefore, the first wire of the conventional vehicle seat includes two vertical wires extending in the gravity direction (longitudinal direction of the seat back in the front view) on both outer sides in the horizontal direction of the seat back in the front view. Three wires, that is, a horizontal wire that extends in a horizontal direction (a short direction of the seat back in a front view) are provided between approximately intermediate positions in the extending direction of the two vertical wires. The arrangement of these three first wires suppresses the horizontal wire from separating from the surface of the pad, and suppresses the trim cover from floating from the surface of the pad.

  However, in the above-described conventional vehicle seat, since both ends of the horizontal wire are close to the vertical wire, the interval between the restraint portion of the trim cover by the horizontal wire and the restraint portion of the trim cover by the vertical wire is close. Therefore, when the horizontal wire and the vertical wire are misaligned and the trim cover is loosened, the looseness of the trim cover cannot be released in the area between the horizontal wire and the vertical wire, and the trim cover is wrinkled. However, there is a problem in that

  According to the vehicle seat of claim 5, in addition to the effect of the vehicle seat of any one of claims 1 to 4, the plurality of first wires have a predetermined distance from adjacent first wires in front view. The first wires can be separated from each other because they are arranged side by side with a space therebetween. Therefore, it is possible to leave a space between the restraining portions of the trim cover by the respective first wires. As a result, even if the arrangement of the respective first wires shifts and the first wires approach each other, the looseness of the trim cover caused by the approach of the first wires is released to the region between the first wires, It is possible to prevent wrinkles from being formed on the trim cover.

  In addition, since the plurality of first wires are arranged in parallel, when carrying the trim cover with the first wire arranged in the trim cover, the direction in which the first wires are arranged (the plurality of first wires when viewed from the front is The trim covers can be folded in the (adjacent direction) to carry the trim cover in a small size. As a result, it is possible to easily carry the trim cover with the first wire arranged on the trim cover.

  According to the vehicle seat of claim 6, in addition to the effect of the vehicle seat of claim 5, the plurality of first wires are arranged side by side in the lateral direction of the seat back in a front view. Even if the number of 1-wires arranged is small, the amount of restraint of the trim cover by the 1st wire can be secured. As a result, it is possible to prevent the cost of the first wire from increasing.

  Further, when the trim cover is folded while the first wire is arranged in the trim cover, the trim cover is folded in the lateral direction of the seat back when viewed from the front, so the amount of folding the trim cover can be reduced. As a result, it is possible to prevent the trim cover from becoming bulky when carrying the trim cover.

  According to the vehicle seat of claim 7, in addition to the effect of the vehicle seat of claim 5 or 6, the first wire is made of an elastically deformable material and extends along the surface shape of the pad. Since the elastically deformed and connected to the connected member, the connected member is set to have a larger holding force to be held in the pad than the elastic recovery force of the first wire elastically deformed along the surface shape of the pad. When disposing the trim cover on the pad, the first wire can be connected to the connected member while elastically deforming the first wire to the surface shape of the pad. As a result, it is not necessary to rearrange the first wire at a position along the surface of the pad before connecting the first wire to the connected member, and the trim cover (first wire) is arranged on the pad (connected member). The workability of (coupling) assembly can be improved.

  According to the vehicle seat of claim 8, in addition to the effect of the vehicle seat of claim 7, the first wire is linearly extended in an unloaded state, and the pad has a curved front surface. Since the front surface is formed in a complicated shape (curved shape), the first wire linearly extended in the unloaded state is elastically deformed along the front surface of the pad to be connected. Can be connected to. Therefore, even if the shape of the front surface of the pad is complicated, it is possible to perform the work of disposing the first wire on the trim cover in a state where the first wire is linearly extended. As a result, the workability of disposing the first wire on the trim cover can be improved.

  According to the vehicle seat of claim 9, in addition to the effect of the vehicle seat of claim 7 or 8, the first wire is formed to have a circular cross section, and the center of the cross section is linear in an unloaded state. Since it is extended, the force required for elastically deforming the first wire along the surface shape of the pad can be made the same every time regardless of the circumferential direction of the first wire. Therefore, the workability of the work of elastically deforming the first wire into the surface shape of the pad can be improved.

  In addition, since the elastic recovery force of the first wire elastically deformed along the surface shape of the pad can be set to be the same every time, it is not necessary to set the pad, the connected member, and the connecting member to strengths higher than necessary. It is possible to suppress an increase in manufacturing cost.

  According to the vehicle seat of claim 10, in addition to the effect of the vehicle seat of claim 9, the connected member is formed as a second wire extending along the first wire, The wire and the second wire are formed of the same material in a circular cross section, the first wire is formed with a diameter smaller than the diameter of the second wire, and the rigidity of the first wire is lower than the rigidity of the second wire. Since it is set, the first wire can be easily elastically deformed along the surface shape of the pad, and the rigidity of the second wire can be increased to secure the cushioning performance of the pad by the second wire and the first wire.

  Moreover, since the rigidity of the second wire and the rigidity of the first wire are made different depending on the size of the diameter, the difference can be visually judged (thick or thin). As a result, it is possible to prevent the placement of the second wire and the placement of the first wire from being erroneous (opposite).

  According to the vehicle seat of claim 11, in addition to the effect of the vehicle seat of any one of claims 7 to 10, the pad includes a recessed portion that is recessed toward the back side on at least a part of the front side. Since the connecting portion of the first wire and the connected member by at least one connecting member of the plurality of connecting members is set to the deepest part of the recess of the recess, the first wire is elastically deformed to form the connected member. When connected, the first wire can be prevented from leaving the surface of the pad by the depth of the recess. As a result, the trim cover can be prevented from floating from the pad.

  According to the vehicle seat of claim 12, in addition to the effect of the vehicle seat of any one of claims 7 to 11, the plurality of first wires are set to have the same overall length in the unloaded state. Therefore, the type of the first wire can be one type. As a result, when disposing the first wire on the trim cover, it is not necessary for the operator to select which wire to dispose, so that the workability of assembling the first wire on the trim cover can be improved.

  Further, since the plurality of first wires are arranged side by side in a front view, when all the entire lengths are set to be the same, the restraining directions of the trim covers between the first wires are the same (the first wires are arranged side by side). Direction). As a result, it is possible to prevent the trim cover from being pulled from a plurality of directions to form wrinkles on the trim cover.

  According to the method of manufacturing a vehicle seat of claim 13, the skin material and the wading are superposed and arranged between the facing surfaces of the first jig and the second jig with the adhesive material interposed therebetween. By providing at least one of the first jig and the second jig in which the skin material, the adhesive material, and the wadding are provided between the facing surfaces by the providing step, the first step is performed. A bonding step of pressing the skin material and the wadding between the facing surfaces of the jig and the second jig to bond them with an adhesive, and the facing surface of the first jig and the second jig corresponds to the pad. Therefore, the skin material and the wadding can be bonded together in a shape corresponding to the recess of the pad. That is, the trim cover can be formed in a shape corresponding to the recess of the pad.

  Thereby, when the pad is covered with the trim cover, the trim cover can be easily fitted along the recess of the pad. Therefore, it is possible to suppress the occurrence of wrinkles in the skin material and the formation of a gap between the skin material and the pad due to the difference in elasticity between the skin material and the wadding. As a result, a vehicle seat having an improved appearance can be manufactured.

  According to the vehicle seat manufacturing method of claim 14, in addition to the effect of the vehicle seat manufacturing method of claim 13, since the adhesive is formed from a sheet-shaped adhesive sheet, a liquid adhesive It is not necessary to apply or spray the above, and an adhesive sheet formed in a predetermined shape may be laminated together with the skin material and the wadding. Therefore, the man-hour of the disposing process can be reduced.

  According to the method of manufacturing a vehicle seat of claim 15, the opposing surface of at least one of the first jig and the second jig is formed such that a region corresponding to the second region recedes from the other opposing surface. Since the area corresponding to the second area between the skin material and the wadding is not pressed between the facing surfaces of the first jig and the second jig in the bonding step, the skin material and the wadding are Even if the adhesive sheet is arranged in the space corresponding to the second region, the second region (the region where the skin material and the wadding are not bonded) can be formed. That is, it is not necessary to form an adhesive sheet in a shape in which a region corresponding to the second region is cut out, or to dispose a plurality of adhesive sheets while avoiding the second region in the disposing step.

(A) It is a perspective front view of the vehicle seat in 1st Embodiment of this invention, (b) is a front view of a seat back. (A) is a front view of a seat cushion, (b) is a perspective front view of a trim cover and a cover side wire. 1A is a sectional view of the seat back taken along the line IIIa-IIIa in FIG. 1B, and FIG. 3B is a sectional view of the seat back taken along the line IIIb-IIIb in FIG. 3A. 3A is a partially enlarged cross-sectional view of the seat back in the IVa portion of FIG. 3A, and FIG. 4B is a partially enlarged cross-sectional view of the seat back in the IVb portion of FIG. 3B. It is sectional drawing of a seat back in the state which decomposed | disassembled the seat pad and the trim cover. 1A is a cross-sectional view of the first cover member taken along the line VIa-VIa in FIG. 1B, and FIG. 1B is a partially enlarged cross-sectional view of the first cover member and the mold in an arranging step, This corresponds to the cross section taken along the line VIa-VIa in FIG. (A) is a partial expanded sectional view of a 1st cover member and a metallic mold in a 2nd embodiment, and (b) is a sectional view of a 1st cover member in a 3rd embodiment. 8A is a partially enlarged cross-sectional view of the first cover member and the mold, which corresponds to a cross section taken along line VIa-VIa of FIG. 1B, and FIG. 8B is a line VIIIb-VIIIb of FIG. 8A. It is a partial expanded sectional view of the 1st cover member and a metallic mold in a line.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, a vehicle seat 1 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1A is a perspective front view of a vehicle seat 1 according to the first embodiment of the present invention, and FIG. 1B is a front view of a seat back 3.

  In the following description, with respect to the vehicle seat 1 in the state shown in FIG. 1B, the left side of the drawing is the right side, the right side of the drawing is the left side, the upper side of the drawing is the upper side, and the lower side of the drawing. Will be referred to as the lower side, the back side of the paper will be referred to as the rear (back) side, and the front side of the paper will be referred to as the front (front) side. Further, arrows FB, UD, and LR in the figure respectively indicate the front-rear direction, the up-down direction, and the left-right direction of the vehicle seat 1.

  As shown in FIG. 1, the vehicle seat 1 is a seat mounted on a vehicle (for example, an automobile or a railway vehicle). The vehicle seat 1 mainly includes a seat cushion 2 on which a seated person sits, a seat back 3 that serves as a backrest of the seated person, and a headrest 4 that supports the head of the seated person. Further, the seatback 3 is formed to be longer in the up-down direction (arrow UD direction) than in the left-right direction (arrow LR direction) in a front view.

  Next, the seat back 3 of the vehicle seat 1 will be described with reference to FIGS. 2 to 4. FIG. 2A is a front view of the seat pad 20, and FIG. 2B is a perspective front view of the trim cover 30 and the cover side wire 40. 3A is a cross-sectional view of the seatback 3 taken along the line IIIa-IIIa in FIG. 1B, and FIG. 3B is a cross-section of the seatback 3 taken along the line IIIb-IIIb in FIG. 1B. It is a figure. FIG. 4A is a partially enlarged cross-sectional view of the seat back 3 in the IVa portion of FIG. 3A, and FIG. 4B is a partially enlarged cross-sectional view of the seat back 3 in the IVb portion of FIG. 3B. It is a figure. Note that, in FIG. 2A, a part of the pad side wire 25 embedded in the main cushion portion 21 is illustrated by a chain line.

  As shown in FIGS. 2 to 4, the seat back 3 includes a seat pad 20 integrally formed of a synthetic resin foam of soft urethane foam, and a trim provided on the surface (design surface) of the seat pad 20. And a cover 30.

  The seat pad 20 includes a main cushion portion 21 for supporting the occupant's back from the rear, a side cushion portion 22 for laterally holding the occupant's back, and the rear side of the main cushion portion 21 and the side cushion portion 22. A housing portion 26 that is recessed (in the direction of arrow B) is mainly provided. The seat back 3 is connected to the seat cushion 2 and the headrest 4 by accommodating a metal frame (not shown) of the vehicle seat 1 in the accommodating portion 26.

  The main cushion portion 21 faces the back side (arrow B direction) at a substantially intermediate position in the vertical direction (arrow UD direction) in front view so that the occupant's back uniformly contacts the front surface of the seat back 3. And a second bending portion 21b which is located below the first bending portion 21a (direction of arrow D) and bulges toward the front side (direction of arrow F). .. By the first bending portion 21a and the second bending portion 21b, the surface shape of the front side of the main cushion portion 21 in the side view of the seat back 3 is formed into a substantially S-shaped curved shape (see FIG. 5). The gently curved front surface of the main cushion portion 21 formed by the first curved portion 21a and the second curved portion 21b improves the riding comfort of an occupant seated on the seat back 3 and the design (design) of the seat back 3. it can.

  Further, the main cushion portion 21 has a groove portion 23 that is recessed from the front surface toward the back surface side (direction of arrow B) and the groove portion 23 of the main cushion portion 21. A recess 24 further recessed from a part of the inner surface toward the back side and a part of the recess 24 are embedded in the main cushion portion 21 and are integrally formed with the main cushion portion 21 (seat pad 20). The pad side wire 25 is mainly provided.

  It should be noted that when the trim cover 30 described later is covered by the seat pad 20, the seat pad 20 is pressed by the trim cover 30 and the inside of the groove 23 is closed. The groove 23 is shown in an expanded state for easy understanding.

  The groove-like portions 23 are formed at three positions at predetermined intervals in the horizontal direction (arrow LR direction) of the seat pad 20 when viewed from the front. In addition, in the following description, the three groove portions 23 will be described with reference numerals 23R, 23C, and 23L sequentially from the right side.

  The groove-like portion 23C is formed at a substantially central position in the left-right direction (arrow LR direction) of the main cushion portion 21, and the groove-like portions 23R and 23L connect the main cushion portion 21 and the side cushion portion 22. It is formed in each part. Further, the groove-shaped portions 23R and 23L are formed at positions separated from the groove-shaped portion 23C in the right and left directions by the same distance in a front view.

  The pad-side wire 25 is formed of an elastically deformable metallic material in the shape of a rod having a circular cross section. The pad-side wires 25 are arranged one by one on the back surface side (arrow B direction side) of each of the three groove-shaped portions 23 at predetermined intervals (three in total). These pad-side wires 25 can increase the rigidity inside the seat pad 20 and improve the cushioning performance of the seat back 3. The pad-side wire 25 is curved (deformed) in an initial shape along the inner surface of the groove-like portion 23 (surface shape of the main cushion portion 21) into a substantially S-shape in a side view, and the curve (deformation). In this state, the foam is integrally foamed with the seat pad 20 of the seat back 3.

  The three pad-side wires 25 are formed to have the same total length, and both axial ends thereof are arranged at substantially the same position in the vertical direction. In the present embodiment, the pad side wire 25 is made of hard steel wire (spring material) and has a diameter of 2.6 mm.

  The recess 24 is a recess that partially exposes the pad-side wire 25 embedded in the main cushion portion 21 from the main cushion portion 21, and the recess 24 extends from the inner surface of the groove portion 23 in the recessing direction (pad-side wire). 25 side). As a result, the pad-side wire 25 is exposed on the inner surface of the recess 24 in a state where the pad-side wire 25 is inserted in the up-down direction (arrow UD direction).

  In addition, the recesses 24 are formed in each of the three groove-shaped portions 23 so as to be dispersed in four locations at predetermined intervals in the vertical direction (arrow U-D). Therefore, the pad side wire 25 is exposed from four locations inside the one groove 23 (see FIG. 3A). In the following description, the four recesses 24 will be referred to as a first recess 24, a second recess 24, a third recess 24, and a fourth recess 24 in order from the upper recess 24 toward the lower recess 24. To call. Further, the formation positions of the respective concave portions 24 (the first concave portion 24, the second concave portion 24, the third concave portion 24, the fourth concave portion 24) in the vertical direction are the concave portions formed in the respective groove-shaped portions 23. 24 (first recess 24, second recess 24, third recess 24, fourth recess 24) are formed at substantially the same position.

  In addition, the formation position of the second recess 24 is set to a position where the recessed depth of the first curved portion 21a toward the back side (direction of arrow B) is maximized, and the formation position of the recess 24 at the lower end is set to the first position. It is set at a position where the bulging dimension of the two-curved portion 21b toward the front side (direction of arrow F) is maximized.

  In addition, the position where the recessed depth of the first curved portion 21a toward the back side is the maximum is the front side above and below the first curved portion 21a with respect to the front surface of the seat pad 20 in a side view. This is the position where the distance from the imaginary line S1 (see FIG. 5) that linearly connects the two protruding vertices to the front surface of the seat pad 20 is maximized in the direction orthogonal to the imaginary line S1. The position where the bulging dimension of the second curved portion 21b toward the front side is the maximum is the position where the imaginary line S1 contacts the front surface of the seat pad 20 on the lower side of the first curved portion 21a.

  The trim cover 30 includes a skin member 31 serving as a skin of the seat back 3, a disposing member 32 connected to the skin member 31, a cover-side wire 40 disposed on the disposing member 32, and a ring shape. The connecting member 50 to be formed is mainly provided.

  The skin member 31 mainly includes two first cover members 33L and 33R that cover the front surface of the main cushion portion 21 of the seat pad 20, and two second cover members 34L and 34R that cover the side cushion portion 22. The cover member 33 </ b> L, 33 </ b> R, 34 </ b> L, 34 </ b> R is sewn to cover the seat pad 20 to form a single skin member 31. In the present embodiment, the cover members 33L, 33R, 34L, 34R are composed of the skin material 35, the wadding 36, and the adhesive material 37. 1 to 5, the skin material 35, the wadding 36, and the adhesive material 37 are shown as a single member without distinguishing them for easy understanding.

  The first cover members 33L, 33R are divided in the direction of gravity (arrow UD direction) at a substantially central portion of the seat pad 20 in the horizontal direction (arrow LR direction) in front view, and the first cover members 33L, 33R of the seat pad 20 in front view are divided. They are arranged side by side in the horizontal direction.

  The first cover member 33L and the second cover member 34L, and the first cover member 33R and the second cover member 34R are formed in left-right symmetric shapes with the divided portions of the first cover members 33L and 33R as axes of symmetry. To be done. In the present embodiment, the cover member arranged on the left side of the axis of symmetry is the first cover member 33L and the second cover member 34L, and the cover member arranged on the right side of the axis of symmetry is the first cover member 33R and the second cover member. The cover member 34R will be described.

  The first cover member 33L includes a suture piece 33L1 that is sewn to the other cover members 33R and 34L at the outer edge side edge portion in a front view. The first cover member 33R includes a stitching piece 33R1 that is sewn to the other cover members 33L and 34R at the outer edge side edge portion in a front view.

  Note that the suture pieces 33L1 and 33R1 are formed on both outer edges of the first cover members 33L and 33R in the left-right direction (arrow L-R direction) in a front view, and the other cover members adjacent to the left-right direction (first direction). The cover members 33L and 33R and the second cover members 34L and 34R) are sewn together.

  The first cover members 33L and 33R are connected by stitching the suture pieces 33L1 and 33R1 with a thread (not shown) in a state where their front sides are aligned with each other. In this case, since the suture pieces 33L1 and 33R1 can be arranged on the seat pad 20 side (back side), it is possible to prevent the suture pieces 33L1 and 33R1 from being viewed from the front side with the first cover members 33L and 33R opened. it can.

  Further, the connecting (sewn) portion of the first cover members 33L and 33R is set at a position facing the groove-like portion 23C of the seat pad 20 (see FIG. 3B). Therefore, the suture pieces 33L1 and 33R1 arranged on the back side of the connecting portion with the first cover members 33L and 33R can be housed inside the groove-like portion 23C. Therefore, when the trim cover 30 is covered on the surface of the seat pad 20, the suture pieces 33L1 and 33R1 are sandwiched between the seat pad 20 and the first cover member 33L or the first cover member 33R, and The cover members 33L and 33R can be prevented from floating from the surface of the seat pad 20.

  The second cover member 34L is formed in a shape that covers the side cushion portion 22 formed on the left side, and the second cover member 34R is formed in a shape that covers the side cushion portion 22 formed on the right side. ..

  The second cover member 34L includes a suture piece 34L1 that is sewn to the first cover member 33L at an outer edge side edge portion in a front view. The suture piece 34L1 is formed on the left side edge portion of the second cover member 34L in the left-right direction (arrow L-R direction) in a front view, and is sutured to the first cover member 33L adjacent to the left side.

  The second cover member 34L and the first cover member 33L are connected by stitching the suture pieces 34L1 and 33L1 with a thread (not shown) in a state where the front sides of the second cover member 34L are abutted against each other. In this case, since the suture pieces 34L1 and 33L1 can be arranged on the seat pad 20 side (back side), the suture pieces 34L1 and 33L1 are visually recognized from the front side in the state where the first cover member 33L and the second cover member 34L are opened. Can be suppressed.

  The connecting portion of the second cover member 34L and the first cover member 33L is set at a position facing the groove portion 23L of the seat pad 20 (see FIG. 3B). This allows the suture pieces 34L1 and 33L1 to be housed inside the groove-like portion 23L. Therefore, when the trim cover 30 is provided on the surface of the seat pad 20, the suture pieces 34L1 and 33L1 are sandwiched between the seat pad 20 and the second cover member 34L or the first cover member 33L, and the second The cover member 34L and the first cover member 33L can be prevented from floating from the surface of the seat pad 20.

  Note that the connection between the second cover member 34R and the first cover member 33R is similar to the connection between the second cover member 34L and the first cover member 33L, and the suture piece 34R1 of the second cover member 34R and the first cover member 34R. The suture piece 33R1 of the member 33R is sutured and connected.

  In addition, the connecting portion between the second cover member 34R and the first cover member 33R is set at a position facing the groove 23R of the seat pad 20 (see FIG. 3B). This allows the suture pieces 34R1 and 33R1 to be housed inside the groove-like portion 23R. Therefore, when the trim cover 30 is provided on the surface of the seat pad 20, the suture pieces 34R1 and 33R1 are sandwiched between the seat pad 20 and the second cover member 34R or the first cover member 33R, and the second The cover member 34R and the first cover member 33R can be prevented from floating from the surface of the seat pad 20.

  The arranging member 32 is a portion on which a cover-side wire 40, which will be described later, is arranged. A portion, a stitching portion of the stitching pieces 33R1 and 33L1, and a stitching portion of the stitching piece 33L1 and the stitching piece 34L1). The arranging member 32 is formed of a rectangular cloth member that is long in one direction, is folded back at a substantially central portion in the lateral direction, and is in contact with both end portions in the lateral direction. Sutured to the sutured portion. As a result, the arrangement member 32 has a tubular shape.

  Further, the disposition member 32 is formed such that its dimension in the longitudinal direction is longer than the separation distance from the first (upper end) recessed portion 24 to the fourth (lower end) recessed portion 24 formed in the groove-like portion 23. A notch 32a is provided at a position facing the recess 24 and is partially notched. Therefore, the cover-side wire 40 arranged inside the arranging member 32 can be exposed from the arranging member 32 through the notches 32a at positions facing the recesses 24. As a result, the cover-side wire 40 exposed from the cutout 32a and the pad-side wire 25 exposed from the recess 24 can be connected by the connecting member 50 described later.

  The cover-side wire 40 is a member that is disposed on the disposing member 32 of the trim cover 30 and restrains the trim cover 30. The cover-side wire 40 is formed of an elastically deformable metallic material into a rod shape with a circular cross section, and is in an unloaded state. The center of the cross section is linearly extended. The cover-side wire 40 is disposed on the disposing member 32 of the trim cover 30 in an unloaded state in which the center of the cross section extends linearly. Therefore, the cover-side wire 40 can be easily arranged on the trim cover 30.

  The cover-side wire 40 is formed such that its axial dimension is slightly larger than its longitudinal dimension. One cover-side wire 40 is disposed inside each of the three disposing members 32 (three in total), and both ends in the axial direction are projected from both ends in the longitudinal direction of the disposing member 32. The cover-side wire 40 includes return portions 41 that are bent in a substantially U shape at both ends in the axial direction, and the return portions 41 are arranged (hooked) on the outside of the disposing member 32 having a tubular shape. This can prevent the cover-side wire 40 from being displaced in the vertical direction with respect to the trim cover 30.

  The three cover-side wires 40 are arranged at substantially the same positions (formed to have substantially the same length) in the vertical direction (direction of arrow UD) of both axial end portions, and are arranged in the respective axial directions. They are arranged side by side in the left-right direction (arrow L-R direction) while being oriented in a substantially parallel direction. In the present embodiment, the cover-side wire 40 is made of hard steel wire (spring material) and has a diameter of 2.0 mm. As described above, since the pad side wire 25 is formed of the same material as the cover side wire 40 and has a diameter of 2.6 mm, the pad side wire 25 is set to have a higher rigidity than the cover side wire 40. To be done.

  The connecting member 50 is a member that connects the cover-side wire 40 and the pad-side wire 25, and is formed in a substantially C-shape before connecting the cover-side wire 40 and the pad-side wire 25. The connecting member 50 is formed by inserting the cover-side wire 40 and the pad-side wire 25 inward from the C-shaped opening and then closing the C-shaped opening with a dedicated tool to cover the cover-side wire 40 and the pad. The side wire 25 can be connected.

  Further, the connecting member 50 is arranged corresponding to the position where the cover-side wire 40 is exposed through the notch 32a of the above-mentioned disposing member 32, and in this embodiment, the cover is provided at 12 places in total. The side wire 40 and the pad side wire 25 are connected. The connecting member 50 that connects the cover-side wire 40 and the pad-side wire 25 is an example, and the cover-side wire 40 and the pad-side wire 25 may be connected by using other fasteners.

  Next, a method of disposing (covering) the trim cover 30 on the seat pad 20 will be described with reference to FIG. FIG. 5 is a sectional view of the seat back 3 in a state where the seat pad 20 and the trim cover 30 are disassembled. The cross section of FIG. 5 corresponds to the cross section of the seat back 3 of FIG.

  As shown in FIG. 5, before the trim cover 30 is arranged on the seat pad 20, the trim cover 30 is arranged in a flat state by the straight cover side wire 40 arranged on the arrangement member 32. To be done. On the other hand, as described above, the seat pad 20 has its front surface curved into a substantially S shape by the first bending portion 21a and the second bending portion 21b of the main cushion portion 21.

  Therefore, when the trim cover 30 is provided on the seat pad 20, the cover side wire 40 is provided on the seat pad 20 in order to prevent the trim cover 30 from being provided with a gap from the seat pad 20. The cover-side wire 40 and the pad-side wire 25 need to be connected by the connecting member 50 after being deformed into the surface shape of 20.

  However, when the initial shape of the cover side wire 40 is curved along the surface shape of the seat pad 20, at the stage of disposing the cover side wire 40 in the trim cover 30, the cover side wire 40 is arranged in the circumferential direction. Does not correspond to the front surface (front surface) of the seat pad 20, so that the cover side wire 40 is arranged at a position along the surface shape of the seat pad 20 before the trim cover 30 is arranged on the seat pad 20. There is a problem that it takes time and effort.

  In the present embodiment, the cover-side wire 40 is formed of an elastically deformable metal material, and the pad-side wire 25 is embedded in the main cushion portion 21 and is elastically deformed to the surface shape of the seat pad 20. Since the main cushion portion 21 is held with a force stronger than the elastic recovery force of the wire 40, when the trim cover 30 is arranged on the seat pad 20, the cover-side wire 40 is elastic along the surface shape of the seat pad 20. By connecting the cover side wire 40 to the pad side wire 25 while deforming, the cover side wire 40 can be arranged along the surface shape of the seat pad 20. As a result, it is necessary to curve the initial shape of the cover-side wire 40 along the surface shape of the seat pad 20, and the cover-side wire 40 whose initial shape is curved along the surface shape of the seat pad 20 is the surface of the seat pad 20. Since it is not necessary to rearrange the trim cover 30 (cover side wire 40) to the seat pad 20 (pad side wire 25), it is possible to improve the workability of the assembling.

  In addition, in the present embodiment, the front surface is formed into a gentle curved surface shape, and the ride comfort of an occupant seated on the seat back 3 and the seat pad 20 with improved design (design) of the seat back 3 are improved. Since the cover side wire 40 linearly extended in the unloaded state can be connected to the pad side wire 25 while elastically deforming along the shape of the front surface of the seat pad 20, the shape of the front surface of the seat pad 20 is complicated. Even in the case of (curved surface shape), the cover side wire 40 is linearly extended (no load), and the cover side wire 40 is arranged on the trim cover 30 (the cover side is arranged on the arrangement member 32 of the trim cover 30). The operation of disposing the wire 40) can be performed. As a result, the workability of disposing the cover-side wire 40 on the trim cover 30 can be improved.

  Further, the second recess 24 of the plurality of recesses 24 provided in the groove portion 23 is formed at the deepest part (the position where the recess is maximized) of the recess toward the back side of the first bending portion 21a. Therefore, when the cover-side wire 40 is elastically deformed and connected to the pad-side wire 25, the cover-side wire 40 may be disposed with a gap from the deepest portion of the recess of the first bending portion 21a. Can be suppressed. As a result, it is possible to prevent the trim cover 30 from being disposed with a gap from the seat pad 20.

  According to the trim cover 30 and the seat pad 20 arranged as described above, the three cover-side wires 40 are separated from the adjacent cover-side wires 40 in the left-right direction (arrow LR direction) by a predetermined distance. Since they are arranged side by side, the restraint portion of the trim cover by the cover side wire 40 can be separated. Therefore, even if the respective cover-side wires 40 are displaced from each other and the cover-side wires 40 approach each other, the slack of the trim cover 30 caused by the approach of the cover-side wires 40 to each other causes the slack in the area between the cover-side wires 40. It is possible to suppress the formation of wrinkles on the surface of the trim cover 30 by letting it escape to the outside.

  Further, since the cover-side wires 40 are arranged side by side, the restraint directions of the trim covers 30 between the cover-side wires 40 can be oriented in the same direction (the cover-side wires 40 are arranged side by side). Thereby, it is possible to suppress the formation of wrinkles on the trim cover 30.

  For example, when the cover-side wire 40 that extends in the horizontal direction and the cover-side wire 40 that extends in the direction of gravity coexist, the trim-cover 30 is provided by the cover-side wire 40 that extends in the horizontal direction. Are constrained in the gravity direction, and the trim cover 30 is constrained in the horizontal direction by the cover-side wire 40 extending in the gravity direction. In this case, when the regions constrained in different directions overlap, wrinkles are easily formed in the trim cover 30 because the constraining directions are different. In the present embodiment, the constraining directions are the same (the cover-side wires 40 are arranged in parallel). It is possible to prevent the wrinkles from being formed on the trim cover 30 because it can be oriented in the direction.

  In addition, the form in which the three cover-side wires 40 are juxtaposed with the cover-side wires 40 that are adjacent to each other in the left-right direction (arrow L-R direction) at a predetermined interval is both ends of one cover-side wire 40. The angle of intersection of the straight line connecting the both ends of the adjacent cover-side wires 40 and the straight line connecting both ends of the adjacent cover-side wires 40 may be 0 degree (parallel) to 5 degrees, which is the minimum of the adjacent cover-side wires 40 in the front view. It is sufficient that the separation distance is 100 mm or more. Within this range, the looseness of the trim cover 30 due to the cover-side wires 40 approaching each other can be released to the region between the cover-side wires 40. Further, the restraint directions of the trim cover 30 can be made the same direction. In the present embodiment, the intersection angle in a front view of a straight line connecting both ends of the cover-side wire 40 at the center in the left-right direction and a straight line connecting both ends of the cover-side wires 40 on both outer sides in the left-right direction is set to 0.3 degrees. The minimum separation distance from the cover side wire 40 in front view is set to 210 mm.

  In addition, since the plurality of three cover-side wires 40 are extended in substantially the same direction and arranged in parallel in the left-right direction (arrow L-R direction), the trim cover 30 is provided with the cover-side wires 40. When carrying the trim cover 30, the trim cover 30 can be folded in the direction (horizontal direction) in which the cover-side wires 40 are juxtaposed to carry the trim cover 30 in a small size. As a result, it is possible to easily carry the trim cover with the cover-side wire 40 provided on the trim cover 30.

  In this case, the three cover-side wires 40 are juxtaposed in the lateral direction (arrow L-R direction) of the seatback 3 when viewed from the front, so that the cover-side wires 40 are arranged in the trim cover 30. When the trim cover 30 is folded, the trim cover 30 can be folded in the lateral direction of the seat back 3 when viewed from the front. Therefore, the amount by which the trim cover 30 is folded (the length from the entire length in the lateral direction to the predetermined (easy to hold) length) can be reduced. As a result, it is possible to prevent the trim cover 30 from becoming bulky when carrying the trim cover 30.

  Further, since the three cover-side wires 40 are juxtaposed in the lateral direction (arrow L-R direction) of the seat back 3 when viewed from the front, the cover-side wires 40 do not have to be increased in number. The amount of restraint of the trim cover 30 by 40 can be increased. As a result, the cost of the cover-side wire 40 can be suppressed from increasing.

  Since the cover-side wire 40 is formed in a circular cross-section and the center of the cross-section is linearly extended in the unloaded state, the cover-side wire 40 can be placed in any direction in the circumferential direction of the seat pad 20. The force required to elastically deform the cover-side wire 40 along the surface shape can be the same for each product. Therefore, it is not necessary for the operator to consider the force required to bend the cover-side wire 40 from the elastic recovery force of the cover-side wire 40 that is transmitted to the hand while elastically deforming the cover-side wire 40 (with the same force for each product). Therefore, the workability of elastically deforming the cover-side wire 40 along the surface shape of the seat pad 20 can be improved. Further, since the elastic recovery force of the cover side wire 40 elastically deformed along the surface shape of the seat pad 20 can be set to be the same for each product, the seat pad 20, the pad side wire 25, and the connecting member 50 are required. It is not necessary to set the strength to the above, and it is possible to suppress an increase in manufacturing cost.

  The pad side wire 25 is formed of the same material as the cover side wire 40 into a rod shape having a circular cross section, and its diameter is set to be larger than the diameter of the cover side wire 40. Since the rigidity is set higher than the rigidity, the rigidity of the cover side wire 40 can be reduced to facilitate elastic deformation of the cover side wire 40 along the surface shape of the seat pad 20, and the rigidity of the pad side wire 25 can be increased. The cushion performance of the seat back 3 by the cover side wire 40 and the pad side wire 25 can be secured. That is, by utilizing the difference in rigidity between the pad side wire 25 and the cover side wire 40, the cover side wire 40 and the pad side wire 40 can be easily elastically deformed along the surface shape of the seat pad 20. It is possible to secure the cushioning performance of the seat back 3 according to 25.

  It is to be noted that the cushioning performance of the seat back 3 can be ensured when the external force acts in the direction of pushing the occupant to the back side, the main cushion portion 21 which is easily elastically deformed up to a predetermined external force is elastically deformed. When absorbed and an external force of a predetermined amount or more acts, it means that the pad-side wire 25, which is less elastically deformed than the main cushion portion 21, can be elastically deformed to absorb a force of a predetermined amount or more.

  Further, since the pad side wire 25 and the cover side wire 40 have different rigidity depending on the diameter, the difference can be visually judged (thick or thin). As a result, it is possible to prevent the pad side wire 25 and the cover side wire 40 from being misplaced.

  In the unloaded state, the three cover-side wires 40 are arranged at substantially the same positions in the vertical direction (directions of arrows UD) of both axial end portions, and the respective axial directions are substantially parallel to each other. Are arranged side by side in the left-right direction (arrow L-R direction) in the state of being directed toward the front side, the restraining directions of the trim covers 30 located between the respective cover-side wires 40 are the same direction (the side-by-side arrangement direction of the cover-side wires 40). ) Can be set. As a result, it is possible to prevent the trim cover 30 from being pulled from a plurality of directions and forming wrinkles on the surface of the trim cover 30.

  Next, the skin member 31 will be described with reference to FIG. In the present embodiment, the first cover member 33L will be described as a representative of the cover members 33L, 33R, 34L, 34R of the skin member 31.

  FIG. 6A is a cross-sectional view of the first cover member 33L taken along the line VIa-VIa in FIG. In FIG. 6A, the outer shape of the seat pad 20 is illustrated by a chain double-dashed line, and the first cover member 33L is schematically illustrated.

  The first cover member 33 </ b> L includes a skin material 35 that forms the outer appearance of the vehicle seat 1, a wadding 36 that is disposed inside the skin material 35 (on the side of the seat pad 20), and the skin material 35 and the wadding 36. And an adhesive 37 interposed therebetween.

  The skin material 35 is made of cowhide, genuine leather, synthetic leather, fabric or the like. The wadding 36 is for improving the cushioning property of the seat back 3 (vehicle seat 1), and is made of a non-woven fabric, a flexible polyurethane foam or the like. The adhesive material 37 is for bonding the skin material 35 and the wadding 36 over the entire surface, and is made of a thermoplastic hot-melt adhesive material having flexibility such as ethylene vinyl acetate, polyolefin, and polyamide.

  The skin material 35, the wadding 36, and the adhesive material 37 before heating are each formed in a film (sheet) shape having a predetermined thickness. Thereby, the skin material 35, the wadding 36, and the adhesive material 37 before heating are each flexible. The skin material 35, the wadding 36, and the adhesive material 37 before heating are formed to have substantially the same outer shape.

  Here, when the skin material and the wadding are bonded to each other on a flat surface and the skin member formed in a flat shape is deformed (curved) along the surface shape of the seat pad 20, for example, the second curve of the seat pad 20. When swelling and deforming along the surface shape of the portion 21b, since the skin material and the wadding have a predetermined thickness, respectively, tensile stress is applied to the skin material disposed outside the skin member and inside the skin member. A compressive stress is generated in each of the arranged wadings.

  On the other hand, the skin material 35 and the wadding 36 are bonded by the adhesive material 37 in a state corresponding to the surface shape of the main cushion portion 21. This suppresses tensile stress or compressive stress from being generated in the skin material 35 and the wadding 36 when the first cover member 33L has a shape corresponding to the surface shape of the main cushion portion 21.

  As a result, the first cover member 33L is formed to have substantially the same surface shape as the main cushion portion 21, and the first cover member 33L is located at a position corresponding to (opposing) the first bending portion 21a and the second bending portion 21b of the main cushion portion 21. The curved portion 33L2 and the second curved portion 33L3 are respectively provided. More specifically, the first curved portion 33L2 is recessed toward the back side (arrow B direction side), and the second curved portion 33L3 is formed to bulge toward the front side (arrow F direction side). ..

  Thereby, the first cover member 33L can be easily conformed to the surface shape of the seat pad 20 in a state where the first cover member 33L (trim cover 30) is provided over the seat pad 20.

  The recessed shape and the swollen shape may be curved or linear. Further, a curved portion and a linearly formed portion may be mixed, and a plurality of curved portions and linearly formed portions may be formed.

  Further, the recessed shape means that a portion located between both ends of the recessed shape is on the back side (the first cover member 33L is the seat pad) with respect to a straight line connecting both ends of the recessed shape. 20 is formed on the front side (first side) with respect to a straight line connecting both ends of the swollen shape to a portion located between both ends of the swollen shape. That is, the cover member 33L is formed on the side away from the seat pad 20.

  Next, the mold 60 will be described with reference to FIG. FIG. 6B is a partially enlarged cross-sectional view of the first cover member 33L and the mold 60 in the disposing process, and corresponds to the cross section taken along line VIa-VIa of FIG. 1B.

  The mold 60 is for bonding the skin material 35 and the wadding 36, and includes a first mold 61 and a second mold 62. The first die 61 and the second die 62 respectively include facing portions 61 a and 62 a formed in a shape corresponding to the surface shape of the main cushion portion 21.

  The facing portions 61a and 62a corresponding to the first bending portion 21a and the second bending portion 21b of the main cushion portion 21 are provided with the first die first bending portion 61b, the first die second bending portion 61c, and the second die first. The curved portion 62b and the second-type second curved portion 62c are referred to as the curved portion 62b and the second-type second curved portion 62c. The facing portion 61a (first die 61) and the facing portion 62a (second die 62) are a first die first bending portion 61b, a first die second bending portion 61c, a second die first bending portion 62b, and a second die first bending portion 62b. The 2nd type 2nd curved part 62c is each arrange | positioned facing.

  Further, the first die 61 includes an electric heater (not shown), which heats the first cover member 33L (adhesive 37). As a result, the adhesive material 37 melts and the skin material 35 and the wadding 36 can be bonded. The electric heater may be arranged in the second mold 62, or may be arranged in the first mold 61 and the second mold 62.

  Next, a method of manufacturing the first cover member 33L will be described. First, the skin material 35 and the wadding 36 are arranged and stacked (laminated) on the facing portion 61a of the first die 61 with the adhesive 37 before heating interposed therebetween (arrangement step). The wadding 36 is provided on the first die 61 side, and the skin material 35 is provided on the second die 62 side.

  As described above, since the skin material 35, the wadding 36, and the adhesive material 37 before heating are each flexible, the skin material 35, the wadding 36, and the heating material which are arranged (laminated) on the facing portion 61a in the arrangement step. The front adhesive material 37 (first cover member 33L before bonding) is in a state along the shape of the facing portion 61a (surface shape of the main cushion portion 21).

  Next, the skin material 35, the wadding 36, and the adhesive material 37 before heating are fixed to the first die 61 by fasteners (not shown), and the first die 61 is heated by an electric heater (not shown). The first die 61 or the second die 62 is displaced, and the skin material 35, the wadding 36, and the adhesive material 37 before heating are pressed (pressed). The skin material 35 and the wadding 36 are pressed against each other with the adhesive material 37 interposed therebetween, and the first die 61 heated by the electric heater melts the adhesive material 37, so that the skin material 35 and the wadding 36 are separated from each other. The entire surface is bonded (bonding process).

  The pressing (pressing) in the adhering step is to prevent the skin material 35 and the wadding 36 from separating from the adhesive material 37 before heating, and to form the shape on the skin material 35 and the wadding 36. The application of pressure is not the goal.

  As a result, the skin material 35 and the wadding 36 are adhered to each other along the surface shape of the main cushion portion 21, and the tensile stress or the compressive stress is applied at the positions corresponding to the first curved portion 21a and the second curved portion 21b. Is suppressed. As a result, the first cover member 33L including the first curved portion 33L2 and the second curved portion 33L3 is obtained. Note that fixing with a fastener (not shown) may be omitted in the bonding step.

  According to the method of manufacturing the first cover member 33L, since the skin material 35, the wadding 36, and the adhesive material 37 before heating are each provided with flexibility, they are arranged (placed) on the first die 61. The main cushion portion 21 can be deformed so as to follow the surface shape of the main cushion portion 21.

  Moreover, since the adhesive 37 before heating is formed in a film (sheet) shape, it is easy to carry. Further, the application of a liquid adhesive and the spraying work can be dispensed with, and the skin material 35 and the wadding 36 can be easily bonded over the entire surface. These can reduce the number of steps in the disposing process.

  The adhesive 37 before heating may be formed smaller than the outer shapes of the skin material 35 and the wadding 36, or the adhesive 37 before heating may be formed by partially cutting out. As a result, the skin material 35 and the wadding 36 can be partially unbonded.

  Here, the surface of the first curved portion 21a in which the skin material and the wadding are adhered to each other with a flat surface, and the skin member formed in a plane shape is recessed toward the back side (the arrow B direction) of the seat pad 20. When deforming (curving) along a shape, as described above, a tensile stress or a compressive stress is generated in the skin material and the wadding, and the skin member is deformed into a flat shape (tries to return to its original shape). Acts on the skin member.

  When the skin member deforms (returns) to a flat surface, the wadding pulls the skin material due to the difference in elasticity between the skin material and the wading (the elasticity of the wading is greater than the elasticity of the skin material) Wrinkles occur on the member. Alternatively, when the skin member and the seat pad 20 are in contact with each other at both ends of the first curved portion 21a, there is a difference in elasticity between the skin material and the wadding (the elasticity of the skin material is smaller than that of the wadding). As a result, the skin member pulls the wadding, and a gap is formed between the skin member and the seat pad 20.

  Moreover, when deforming (curving) along the surface shape of the second curved portion 21b bulging toward the front side (arrow F direction side), the difference in elasticity between the skin material and the wadding (the elasticity of the skin material is wadding Is smaller than the elasticity of the skin material), the skin material pulls the wadding, and a gap is formed between the skin member and the seat pad 20 around the second curved portion 21b. As a result, the appearance of the seat back 3 deteriorates.

  On the other hand, according to the first cover member 33L in the present embodiment, the first bending portion 33L2 and the second bending portion 33L3 in which the tensile stress or the compressive stress is suppressed from being generated in the skin material 35 and the wadding 36 are provided. Prepare That is, the shape corresponding to the surface shape of the seat pad 20 (the first bending portion 33L2 and the second bending portion 33L3 are formed at the positions corresponding to (facing) the first bending portion 21a and the second bending portion 21b) is maintained. Since the first cover member 33L (trim cover 30) is covered with the seat pad 20, it is possible to prevent a tensile force due to the difference in elasticity between the wadding 36 and the skin material 35 from occurring. It is possible to prevent wrinkles from being generated in the first cover member 33L or to form a gap between the first cover member 33L and the seat pad 20. As a result, it is possible to prevent the appearance of the seat back 3 (vehicle seat 1) from deteriorating and improve the appearance.

  Further, since it is possible to suppress the generation of tensile forces due to the difference in elasticity between the wadding 36 and the skin material 35, it is possible to prevent the wadding 36 from peeling (detaching) from the skin material 35.

  Next, the first cover member 233L in the second embodiment will be described with reference to FIG. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

  FIG. 7A is a partially enlarged cross-sectional view of the first cover member 233L and the mold 260 in the second embodiment, and corresponds to the cross section taken along the line VIa-VIa of FIG. 1B. Note that FIG. 7A is an arrangement step in manufacturing the first cover member 233L, and the first cover member 233L is schematically illustrated.

  As shown in FIG. 7A, a relief portion 261d is formed on the first die 261 (facing portion 61a) of the die 260 according to the second embodiment. The relief portion 261d is recessed from the facing portion 61a toward the opposite side of the facing portion 62a of the second die 62 in the region including the position where the recess depth of the first die first bending portion 61b is maximum. It That is, the escape portion 261d is formed by retreating from the facing portion 62a of the second die 62.

  In addition, the position where the recess depth of the first die first bending portion 61b is the maximum is the one side of the first die first bending portion 61b with respect to the facing portion 61a of the first die 261 in cross section. A straight line between the apexes of the two points projecting to the second die 62 side on the other side (left and right direction in FIG. 7A, up and down direction of the first cover member 233L (arrow U-D direction in FIG. 6A)). It is a position where the distance from a virtual line (not shown) that is connected in a line to the front surface of the first die 261 is maximally separated in the direction orthogonal to the virtual line.

  Next, a method of manufacturing the first cover member 233L will be described. First, the skin material 35 and the wadding 36 are stacked and arranged (laminated) on the facing portion 61a of the first die 261 with the adhesive 37 before heating interposed therebetween. The wadding 36 is arranged on the first die 261 side, and the skin material 35 is arranged on the second die 62 side.

  In the present embodiment, the skin material 35, the wadding 36, and the adhesive material 37 before heating are arranged (laminated) along the facing portion 61a in the disposing process. That is, the skin material 35, the wadding 36, and the adhesive material 37 before heating do not enter the relief portion 261d and are in a state along the shape of the facing portion 61a (the surface shape of the main cushion portion 21). That is, a gap is formed between the bottom surface of the escape portion 261d and the wadding 36.

  Note that the distance between one and the other of the relief portions 261d in the cross-sectional view (the left-right direction in FIG. 7A, the up-down direction of the first cover member 233L (the arrow U-D direction in FIG. 6A)) is the facing portion 61a. Is formed to be sufficiently small. Further, the first die 261 is fixed by a fastener (not shown) in a state where the skin material 35, the wadding 36, and the adhesive material 37 before heating are arranged on the facing portion 61a. Thereby, a gap can be formed between the bottom surface of the escape portion 261d and the wadding 36.

  The bonding process is the same as the bonding process in the first embodiment, and therefore its description is omitted. According to the method of manufacturing the first cover member 233L, the first die 261 (the facing portion 61a) includes the relief portion 261d, so that it is possible to suppress the heating of the adhesive material 37 in the bonding step, and to correspond to the relief portion 261d. The skin material 35 and the wadding 36 can be made non-adhesive in the area (hereinafter referred to as "non-adhesion area S") to be formed.

  The non-adhesion region S in the first cover member 233L is the vertical direction of the first cover member 233L (see FIG. 7 (A) with respect to the front surface (the upper surface in FIG. 7A) of the first cover member 233L in cross-sectional view. In a direction orthogonal to the virtual line (not shown) that linearly connects the vertices of two points protruding to the front side in the left-right direction in a) and the arrow LR direction in FIG. 6A. It is a region including a position where the distance to the front surface of the first cover member 233L is maximally separated.

  Note that the non-bonding region S is more pressed than the outer shape of the escape portion 261d by adjusting the time of pressing (pressing) in the bonding step or the heating temperature of the first die 261 by an electric heater (not shown). It can be large or small.

  According to the first cover member 233L formed as described above, in the non-adhesion region S, the skin material 35 and the wadding 36 are not adhered even when the adhesive material 37 is provided. Accordingly, it is not necessary to form an adhesive material in which a region corresponding to the non-adhesive region S is cut out, or to dispose a plurality of adhesive materials while avoiding the non-adhesive region S in the disposing step. The number of steps can be reduced.

  Further, since the skin material 35 and the wadding 36 are made non-adhesive in the non-adhesion region S, one of the skin material 35 and the wadding 36 is placed on the other due to the difference in elasticity between the skin material 35 and the wadding 36. It can be restrained from being pulled or pushed back. As a result, it is possible to prevent wrinkles from being generated in the skin material 35 (first cover member 233L) and to form a gap between the first cover member 233L and the seat pad 20, so that the seat back 3 (vehicle seat) is formed. The appearance of 1) can be improved.

  In the region including the position where the bulge dimension of the first curved portion 33L2 toward the front side is the maximum, the first cover member 233L is covered by the seat pad 20 so that the first cover member 233L moves vertically (see FIG. 6). The force in the direction of arrow UD in (b) acts. Further, the cover-side wire 40, the pad-side wire 25, and the connecting member 50 are connected to each other, so that a force acts in the left-right direction (arrow L-R direction in FIG. 6B). As described above, in the region where the force acts in the up-down direction and the left-right direction, one of the skin material 35 and the wadding 36 is pulled or pushed back to the other due to the difference in elasticity between the skin material 35 and the wadding 36. Since the non-adhesive area S is formed in such an area, wrinkles are generated in the skin material 35 and a gap is formed between the first cover member 233L and the seat pad 20. Can be suppressed.

  Next, with reference to FIGS. 7B and 8, the first cover member 333L in the third embodiment will be described. The same parts as those in the above-described embodiments are designated by the same reference numerals, and the description thereof will be omitted.

  FIG. 7B is a cross-sectional view of the first cover member 333L in the third embodiment and corresponds to the cross section taken along line VIa-VIa of FIG. 1B. In FIG. 7B, the outer shape of the seat pad 20 and a state in which the first cover member 333L has a convex shape on the front surface side (the arrow F direction side) in the first curved portion 33L2 are illustrated by a two-dot chain line, The first cover member 333L is schematically illustrated.

  The first cover member 333L includes a skin material 35 that forms the outer appearance of the vehicle seat 1, a wading 336 that is disposed inside the skin material 35 (on the side of the seat pad 20), and the skin material 35 and the wading 336. An extra length portion 336 a is formed on the wading 336 with an adhesive 37 interposed therebetween.

  Therefore, the skin material 35 is adhered in a state corresponding to the surface shape of the main cushion portion 21. On the other hand, the wadding 336 is bonded in a state of having a shape corresponding to the surface shape of the main cushion portion 21 except for the extra length portion 336a.

  Next, the mold 360 will be described with reference to FIG. 8A is a partially enlarged cross-sectional view of the first cover member 333L and the mold 360, and corresponds to a cross section taken along line VIa-VIa of FIG. 1B, and FIG. It is a partial expanded sectional view of the 1st cover member 333L and metallic mold 360 in a VIIIb-VIIIb line of a).

  Note that FIG. 8 schematically illustrates the first cover member 333L, and FIG. 8A illustrates an arrangement process in manufacturing the first cover member 333L.

  As shown in FIGS. 8A and 8B, a relief portion 361d is formed on the first die 361 (facing portion 61a) of the die 360. The relief portion 361d is recessed from the facing portion 61a toward the opposite side of the facing portion 62a of the second die 62 in a region including a position where the recess depth of the first die first curved portion 61b is maximum. . That is, the escape portion 361d is formed by retracting from the facing portion 62a of the second die 62.

  In addition, the position where the recess depth of the first die first bending portion 61b is the maximum is the one side of the first die first bending portion 61b with respect to the facing portion 61a of the first die 361 in a sectional view. A straight line between the apexes of the two points projecting toward the second mold 62 side on the other side (the left-right direction in FIG. 8A, the up-down direction of the first cover member 333L (the arrow U-D direction in FIG. 7B)). It is a position where the distance from a virtual line (not shown) that is connected in a line to the front surface of the first die 361 is maximally separated in the direction orthogonal to the virtual line.

  As shown in FIG. 8A, the end portion of the relief portion 361d is curved in the vertical direction of the first cover member 333L (the horizontal direction in FIG. 8A, the arrow UD direction in FIG. 7B). Formed. As a result, the wadding 336 can be easily arranged on the first die 361 along the shape of the relief portion 361d, and the first cover member 333L protrudes to the back side (arrow B side) in the first bending portion 333L2. The extra length portion 336a is formed.

  Next, a method for manufacturing the first cover member 333L will be described. First, the skin material 35 and the wadding 336 are stacked and arranged (laminated) on the facing portion 61a of the first mold 361 with the adhesive 37 before heating interposed therebetween. The wadding 336 is provided on the first die 361 side, and the skin material 35 is provided on the second die 62 side.

  In the present embodiment, the wadding 336 is arranged along the shape of the relief portion 361d, and the skin material 35 and the adhesive material 37 before heating are arranged (laminated) along the facing portion 61a. That is, the skin material 35 and the adhesive material 37 before heating do not enter the relief portion 361d and are in a state along the shape of the facing portion 61a (surface shape of the main cushion portion 21). A gap is formed between the material 37) and the wadding 336.

  Note that the distance between one and the other of the relief portions 361d in the cross-sectional view (the left-right direction in FIG. 8A, the up-down direction of the first cover member 333L (arrow U-D direction in FIG. 7B)) is the facing portion. It is formed sufficiently smaller than 61a. Further, the first die 361 is fixed by a fastener (not shown) in a state where the skin material 35, the wadding 336, and the adhesive material 37 before heating are arranged on the facing portion 61a. Thereby, a gap can be formed between the skin material 35 (the adhesive material 37 before heating) and the wadding 336.

  The bonding process is the same as the bonding process in the first embodiment, and therefore its description is omitted. According to the method for manufacturing the first cover member 333L, since the first die 361 (the facing portion 61a) includes the relief portion 361d, the first die 361 bends in the wadding 336 in the non-bonding region S (away from the back surface of the skin material 35). The extra length portion 336a in the state can be formed.

  As a result, the first cover member 333L is provided with a long (more) wadding 336 in the non-adhesion region S than in a state in which the extra length portion 336a is not bent (abuts on the back surface of the skin material 35). Is set up.

  As shown in FIG. 8B, the relief portion 361d is the first cover member in the left-right direction of the first cover member 333L (arrow L-R direction in FIG. 7B, left-right direction in FIG. 8B). It is formed longer than 333L. Thereby, from the one edge portion 333L4 in the left-right direction of the first cover member 333L in the range corresponding to the relief portion 361d in the up-down direction of the first cover member 333L (the arrow U-D direction in FIG. 7B). The non-bonding area S can be continuously formed up to the other edge portion 333L5 that faces the other edge portion. As a result, a boundary between the bonded region and the non-bonded region S is formed along the up-down direction of the first cover member 333L on both the left and right sides of the first cover member 333L (both sides in the arrow LR direction in FIG. 7B). The wadding 336 is arranged and bonded in a bent (wavy) state in the bonding region near the boundary, and the wrinkle is prevented from being formed on the surface of the first cover member 333L. it can.

  The boundary between the non-bonding area S and the bonding area is released by pressing (pressing) in the bonding process or adjusting the heating temperature of the first die 361 by an electric heater (not shown). Can be larger than the outer shape.

  The relief portion 361d is not formed near both edges (edge portions 333L4, 333L5) of the first cover member 333L in a range corresponding to the relief portion 361d in the vertical direction of the first cover member 333L, that is, The range in which the relief portion 361d is formed in the left-right direction of the first cover member 333L (the direction of the arrow LR in FIG. 7B) is the other edge portion that faces one edge portion 333L4 of the first cover member 333L. The adhesion region and the non-adhesion region S may be formed adjacent to each other in the vicinity of both edges (edges 333L4 and 333L5) of the first cover member 333L, the distance being shorter than the distance to 333L5.

  In this case, although the wading 336 is arranged in a bent (wavy) state in the bonding area near the boundary between the bonding area and the non-bonding area S, the wading 336 is pressed (pressed) in the bonding step. Can be suppressed and wrinkles can be suppressed from being generated on the surface of the first cover member 333L.

  Further, since the skin material 35 and the wadding 336 are adhered to each other in the vicinity of both edge portions (edge portions 333L4, 333L5) of the first cover member 333L in the left-right direction, the skin material 35 is provided on the entire outer periphery of the first cover member 333L. And the wadding 336 can be bonded. Accordingly, the first cover member 333L and the first cover member 33R and the second cover member 34L can be easily sewn together. In addition, it is possible to prevent the adhesion of the skin material 35 and the wadding 336 from being released during transportation of the first cover member 333L, suturing, or the like.

  According to the first cover member 333L formed as described above, in the state in which the trim cover 330 (first cover member 333L) is arranged on the seat pad 20, the direction in which the first bending portion 21a is recessed (arrow It is possible to suppress the side opposite to the (B direction), that is, the first bending portion 333L2 having a convex shape (reversing) toward the front side (arrow F side).

  More specifically, in order to dispose the trim cover 330 on the seat pad 20, the first cover member 333L has a vertical direction (arrow UD direction), a horizontal direction (arrow LR direction), and a front-back direction (arrow F). When the force is applied in the (-B direction), there is a possibility that the first curved portion 333L2 of the first cover member 333L may have a convex shape on the front side (arrow F direction side).

  On the other hand, in the present embodiment, since the extra length portion 336a is formed on the wadding 336, the first curved portion 333L2 is formed as shown by the first cover member 333L illustrated by the chain double-dashed line in FIG. 7B. The convex shape is formed on the front side, and the extra length portion 336a is disposed on the inner peripheral side of the convex shape, that is, the extra length portion 336a is in the left-right direction (arrow L-R direction) and the thickness direction of the wadding 336. A repulsive force (resisting force against compression) can be generated against being compressed in a direction orthogonal to the (arrow FB direction).

  Further, as described above, the first cover member 333L is bonded in the state where the skin material 35 has a shape corresponding to the surface shape of the main cushion portion 21. Accordingly, when the first curved portion 333L2 has a convex shape on the front side, a tensile stress is generated in the skin material 35, and a repulsive force (a force for returning to the shape of the first curved portion 333L2) can be generated. it can.

  With these, it is possible to counter the first curved portion 333L2 from having a convex shape on the front side. As a result, it is possible to prevent the first bending portion 333L2 from having a convex shape on the front side.

  When the trim cover 330 (first cover member 333L) is arranged on the seat pad 20, the extra length portion 336a is compressed in the thickness direction of the wadding 336 by the skin material 35 and the seat pad 20, and the extra length portion 336a of the first cover member 333L. It is possible to prevent the outer surface from rising and the appearance to be deteriorated.

  Here, since the thickness of the wadding 336 is formed to be smaller than the length along the shape of the extra length portion 336a in the cross-sectional view (the line length of the extra length portion 336a in the cross sectional view), the wadding 336 in the thickness direction is formed. As opposed to compression, it is difficult to perform compression in the direction orthogonal to the left-right direction and the thickness direction of the wadding 336.

  In addition, in order to receive the extra length portion 336a in the seat pad 20, a recess having substantially the same shape as the outer shape of the relief portion 361d may be formed. As a result, it is possible to prevent the outer surface of the first cover member 333L from rising and deteriorating the appearance. Further, the extra length portion 336a can be suppressed from being compressed in the thickness direction of the wadding 336, and in the non-adhesion region S (the region where the extra length portion 336a is formed) and the adhesion region when the back of the occupant abuts. It is possible to suppress the occurrence of a difference in feeling.

  Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment, and various modifications and improvements can be easily made without departing from the spirit of the present invention. It can be inferred.

  In each of the above-described embodiments, the case where each of the second cover members 34L and 34R is formed of one piece of fabric has been described. However, the present invention is not limited to this, and each of the second cover members 34L and 34R includes two pieces. It may be formed from a piece of fabric. For example, the second cover members 34L and 34R may be divided into the front surface side of the side cushion portion 22 and the side surface side of the side cushion portion 22, and may be stitched at the divided surface.

  In each of the above-described embodiments, the case where each of the cover members 33L, 33R, 34L, 34R is formed of a woven fabric has been described, but the present invention is not limited to this. For example, each cover member 33L, 33R, 34L, 34R may be made of synthetic leather or artificial leather.

  In each of the above-described embodiments, a case has been described in which one pad-side wire 25 is provided on the back side of each groove 23, but the present invention is not limited to this, and a plurality of pad-side wires 25 may be provided. May be divided into For example, the pad-side wires 25 may be provided at positions corresponding to the recesses 24, and four wires may be provided on the back side of each groove 23. Further, in this case, each pad-side wire 25 does not have to be formed in a rod shape. For example, the pad-side wire 25 is formed in a hook shape, and the connecting member 50 is engaged with the tip thereof. It may be one.

  In each of the above-described embodiments, the case where the three cover-side wires 40 are extended in the vertical direction and arranged in the horizontal direction is described, but the present invention is not limited to this, and for example, four covers are provided. The side wires 40 may extend in the left-right direction, and the cover-side wires 40 adjacent to each other may be arranged side by side by a predetermined distance in the up-down direction.

  In this case, since the cover-side wires 40 that constrain the trim cover 30 can be arranged apart from each other, as in the above-described embodiments, the respective cover-side wires 40 are displaced and the cover-side wires 40 are separated from each other. Even if the cover-side wires 40 approach each other, the looseness of the trim cover 30 caused by the approach of the cover-side wires 40 is released to the region between the cover-side wires 40, and the formation of wrinkles on the surface of the trim cover 30 is suppressed. it can.

  In each of the above-described embodiments, the case where the cover side wire 40 and the pad side wire 25 are made of a metal material has been described, but the present invention is not limited to this. For example, the cover side wire 40 and the pad side wire 25 may be formed of an elastically deformable resin material or an elastically deformable rubber-like member.

  In each of the above-described embodiments, the case where the cover side wire 40 is elastically deformed to dispose (connect) the trim cover 30 (cover side wire 40) to the seat pad 20 (pad side wire 25) has been described. In the case where the trim cover 30 is arranged on the seat pad 20, the cover-side wires 40 may be arranged side by side with a predetermined gap in the front view when the trim cover 30 is arranged on the seat pad 20. It may be plastically deformed along it.

  In each of the above-described embodiments, the case where the front surface of the seat pad 20 is formed into a curved shape and the cover-side wire 40 is linearly extended in the unloaded state has been described, but the present invention is not necessarily limited to this. For example, the front surface of the seat pad 20 is formed into a flat surface, the cover side wire 40 is extended in a curved shape in an unloaded state, and the trim cover 30 (cover side wire 40) is attached to the seat pad 20 (pad side wire 25). When arranging (connecting), the cover side wire 40 may be elastically deformed linearly according to the flat surface shape of the front surface of the seat pad 20.

  In each of the above-described embodiments, the case where the main cushion portion 21 includes the first bending portion 21a and the second bending portion 21b and the surface shape of the front surface is formed to be substantially S-shaped in the side view has been described. It is not limited to. For example, on the front surface of the main cushion portion 21, a curved shape recessed on the back side may be formed at a plurality of places, and the radius and curvature of these curved shapes may be different from each other. Instead of the curved shape that is recessed toward the front side, the curved shape may be protruded toward the front side.

  In 2nd Embodiment and 3rd Embodiment, although the case where the non-adhesion area | region S was formed in the seat back 3 (1st cover member 233L, 333L) was demonstrated, it is not necessarily restricted to this and seat cushion 2 May be formed in.

  In the second embodiment and the third embodiment, the case where the non-adhesion region S is formed at one place has been described, but the present invention is not necessarily limited to this, and a plurality (two or more places) may be formed.

  In the second embodiment and the third embodiment, a region including a position where the recessed depth of the first curved portions 33L2, 333L2 (the first curved portion 21a of the seat pad 20) of the first cover members 233L, 333L is maximum. Although the case where the non-adhesion region S is formed is described above, the present invention is not limited to this, and the non-adhesion region S may be formed in a region including a position where the bulge dimension toward the front side (direction of arrow F) is maximum. .. In addition, it may be formed in a region that does not include the position where the recessed depth of the first curved portions 33L2 and 333L2 is maximum or the position where the bulge dimension of the second curved portion 33L3 is maximum, for example, the first curved portion. It may be formed between the portions 33L2 and 333L2 and the second bending portion 33L3.

  In the region including the position where the front side of the first curved portions 33L2, 333L2 has the maximum bulge dimension, by covering the seat pad 20 with the first cover members 233L, 333L, the first cover members 233L, 333L. A vertical force (arrow U-D direction) acts on. Further, the cover-side wire 40, the pad-side wire 25, and the connecting member 50 are connected to each other, so that a force acts in the left-right direction (arrow L-R direction). As described above, in the region where the force acts in the up-down direction and the left-right direction, one of the skin material 35 and the waddings 36, 336 is pulled to the other due to the difference in elasticity between the skin material 35 and the waddings 36, 336. It is apt to be pushed or pushed back, and by forming the non-adhesion area S in such an area, wrinkles are generated in the skin material 35, and the first cover members 233L, 333L and the seat pad 20 are It is possible to suppress the formation of a gap therebetween.

1 Vehicle seat 3 Seat back 20 Seat pad (pad)
21a First curved portion (recessed portion)
25 Pad side wire (connected member, second wire)
30,330 Trim cover 31 Skin material (trim cover)
33L, 333L First cover member (trim cover)
333L4 One edge portion 333L5 Other edge portion 33R First cover member (trim cover)
34L Second cover member (trim cover)
34R Second cover member (trim cover)
35 skin material 36,336 wading 37 adhesive 40 cover side wire (first wire)
50 Connection member 61 First type (first jig, second jig)
62 Second type (first jig, second jig)
61a Facing part (opposing surface)
62a Facing part (opposing surface)
S Non-bonded area (second area)

Claims (15)

A vehicle seat having a pad having a recessed portion that is recessed in the thickness direction, and a trim cover that covers the pad, wherein the trim cover includes a skin material and a wadding bonded to the skin material,
The vehicle seat, wherein the skin material and the wadding are bonded together in a shape corresponding to the recess of the pad, and the trim cover is formed. The trim cover includes a first region in which the skin material and the wadding are bonded, and a second region in which the skin material and the wadding are not bonded,
The vehicle seat according to claim 1, wherein the second region is set to a region including a deepest portion of the recess.   The vehicle according to claim 2, wherein, in the trim cover, the wadding is longer than the skin material in the second region, and a gap can be formed between the skin material and the wadding. Sheet.   The vehicle seat according to claim 3, wherein the second region is set as a continuous region from one edge of the trim cover to the other edge opposite to the one edge. The pad, the trim cover, a plurality of connected members embedded in the pad, a plurality of first wires arranged on the trim cover for restraining the trim cover, the connected member and the A seat back having a plurality of connecting members for connecting one wire at a plurality of positions;
The vehicle seat according to any one of claims 1 to 4, wherein the plurality of first wires are juxtaposed with the first wires adjacent to each other in a front view at a predetermined interval.   The vehicle seat according to claim 5, wherein the plurality of first wires are arranged side by side in a lateral direction of the seat back in a front view. The first wire is formed of an elastically deformable material, is elastically deformed along the surface shape of the pad, and is connected to the connected member.
7. The holding force of the connected member, which is held by the pad, is set to be larger than the elastic restoring force of the first wire elastically deformed along the surface shape of the pad. The vehicle seat described in.   The vehicle seat according to claim 7, wherein the first wire extends linearly in an unloaded state, and the pad has a curved front surface.   9. The vehicle seat according to claim 7, wherein the first wire has a circular cross section, and the center of the cross section extends linearly in an unloaded state. The connected member is formed as a second wire extending along the first wire,
The first wire and the second wire are formed of the same material in a circular cross section, the first wire is formed with a diameter smaller than the diameter of the second wire, and the first wire and the second wire have a rigidity smaller than that of the second wire. The vehicle seat according to claim 9, wherein the rigidity of the first wire is set to be low.   The pad is provided with a recessed portion that is recessed toward the back side on at least a part of the front surface, and the connection location of the first wire and the connected member by the connection member of at least one of the plurality of connection members is the above-mentioned. The vehicle seat according to any one of claims 7 to 10, wherein the vehicle seat is set at the deepest portion of the recess of the recess.   The vehicle seat according to any one of claims 7 to 11, wherein the plurality of first wires have the same overall length in an unloaded state. A vehicle for manufacturing a vehicle seat including a pad having a recessed portion in the thickness direction and a trim cover for covering the pad, the trim cover including a skin material and a wadding bonded to the skin material. In the sheet manufacturing method,
An arranging step of arranging the skin material and the wadding so as to overlap each other between the facing surfaces of the first jig and the second jig with an adhesive material interposed therebetween;
In the disposing step, by driving at least one of the first jig and the second jig in which the skin material, the adhesive material, and the wadding are disposed between the facing surfaces, the first jig and A bonding step of pressing the skin material and the wadding between the facing surfaces of the second jig to bond them with the adhesive material,
A method for manufacturing a vehicle seat, wherein opposing surfaces of the first jig and the second jig are formed in a shape corresponding to the pad.   The method for manufacturing a vehicle seat according to claim 13, wherein the adhesive material is formed of a sheet-shaped adhesive sheet. The trim cover includes a first region in which the skin material and the wadding are bonded, and a second region in which the skin material and the wadding are not bonded,
At least one of the facing surfaces of the first jig or the second jig is formed such that a region corresponding to the second region is receded from the other facing surface,
15. The vehicle according to claim 14, wherein in the adhering step, a region corresponding to the second region of the skin material and the wadding is not pressed between opposing surfaces of the first jig and the second jig. Sheet manufacturing method.

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