A heat insulating sheet includes, a first sheet, a first heat insulator disposed on a main surface of the first sheet and including a first xerogel, a second heat insulator disposed on the main surface of the first sheet apart from the first heat insulator and including a second xerogel, and a second sheet disposed on the main surface of the first sheet to cover the first and second heat insulators. A first region of the heat insulating sheet provided between the first and second heat insulators viewing in a direction perpendicular to the main surface has an extensible rate larger than an extensible rate of each of the first and second heat insulators. The heat insulating property of this heat insulating sheet hardly degrades.

A vehicle seat that ensures improving appearance. A vehicle seat includes a first cover member to which a terminal of a first skin is stitched and a second cover member to which a terminal of a second skin is stitched. The first cover member and the second cover member are joined together. This ensures reducing a displacement of the first skin and the second skin relative to the first cover member and the second cover member. This ensures reducing the first skin and the second skin being turned up at an outer edge of a flange portion of the first cover member and an end portion of the second cover member on the second skin side. This ensures improving appearance of the vehicle seat.

A backrest of a vehicle seat comprises a backrest frame, a rear padding element attached to the backrest frame, two side cushions, each side cushion comprising a lateral foam block covered with a respective side cover, the side covers and the rear padding element constituting an integral sub-assembly.

A seat apparatus equipped with a seat cover that covers at least part of the seat apparatus surface and is formed by sewing a plurality of skin material pieces together, an operation unit for receiving an operation from an operator, and a covering material for covering the operation unit, wherein: the covering material is formed as part of the skin material pieces, or is formed by sewing a member that is separate from the skin material pieces to the skin material pieces; and a projection is formed that projects in the outward direction from the seat cover when the operation unit is covered.

A trim cover fixing structure used in a vehicle seat 1 comprising a cushion body 16 having elasticity and a trim cover 17 covering the cushion body 16. This structure comprises engagement members 19a, 19b and 19c anchored near the edge of the trim cover 17, and an fixing member 23 provided with an engaging member (periphery 32) that engages with the engagement members 19a, 19b and 19c existing on the trim cover 17 in a state covering the cushion body 16. The fixing member 23 can apply tension to the trim cover 17 covering the cushion body 16 by engaging with the engagement members 19a, 19b and 19c, and in this state with tension applied, the trim cover 17 is anchored to the surface of the cushion body 16. This trim cover fixing structure has a simple structure and low cost and can apply desirable tension to the trim cover, and furthermore is easily applied to a vehicle seat having a split rear seat structure.

A sewn covering for covering support parts includes at least one first and at least one second trim cover element which are connected to one another via a functional seam. A soft insert runs along at least some sections of the functional seam. The seam stump formed by the functional seam can be surrounded by a seam band which can be fixed by the functional seam. To produce such a sewn covering, a band can be used which has an at least partially elastic seam band that is perforated in the longitudinal direction. At least one soft insert is provided in the longitudinal direction of the partially elastic seam band, which insert is fixed to the seam band.

A surface skin-fastening structure for a vehicle seat for fastening a surface skin to a framework of a vehicle seat, includes a base member which is integral with the framework, a surface skin-pressing member fitted into the base member, an interlocking member provided to an end of the surface skin, and slits provided to the base member. The base member has an extension section, which is an end edge that makes contact with a reverse surface of the surface skin. The slits extend in linear fashion along the end edge of the base member. With the surface skin covering the end edge of the base member, the interlocking member and the end of the surface skin are inserted into one opening of the slits and pass through the slits to appear from the other opening, and are stopped in a state of surface contact at the base member.

A trim cover for covering a pad, includes a hook and a skin, wherein: the hook includes: a base portion to which a first end portion of the skin is fixed; and a lock portion that is connected to the base portion and into which a second end portion of the skin is inserted; the first end portion includes: a fixed portion that is fixed to the base portion to be overlapped with a front surface of the base portion; and a folded portion that is folded toward a rear surface of the base portion along an edge of the base portion on a side opposite to the lock portion; and both side portions of the folded portion are arranged to protrude toward the lock portion and arranged to be overlapped with the lock portion and protrude to the outside in the width direction from the lock portion.

A vehicular seat provided in a seat surface with a deep and narrow depression having a flat surface at the bottom is provided. The vehicular seat is a seat for automobiles including: a seat cushion to be a seating face portion of the seat; and a seat back provided on the back of the seat cushion and to be a backrest portion of the seat. A recess having a flat surface at the bottom is provided in the surface of at least one of the seat cushion and the seat back.

A vehicular seat capable of reducing a tensile force, which acts on a sewing thread in a webbing sewn part, enables desired expanding operation of a side air bag in the case of emergency. The vehicular seat has an air bag body, provided in the side part of the seat back, which tear-opens the extending part of the trim cover by expansion, to expand from the seat back. A wrap-sewn part, with its terminal end wrap-folded, is provided at an end sewn to the trim cover. The wrap-sewn part has an overlap part where the webbing is overlapped, and a non-overlap part provided at an end of the overlap part in a direction along a sewing line of sewing to the trim cover. The wrap-sewn part is sewn over the overlap and the non-overlap part with respect to the trim cover.