A method for producing a vehicle seat member in which a frame member having protrusions is integrally molded to a foamed resin molded body is provided. The method comprises an in-mold foam molding step of placing the frame member in a mold, packing prefoamed resin particles, and molding the foamed resin molded body by in-mold foam molding; and a demolding step of removing the mold to obtain the vehicle seat member, wherein in the in-mold foam molding step, the foamed resin molded body is molded so that (BA)/B is 13/1000 or less, wherein A is an outer dimension of the foamed resin molded body in the vehicle seat member obtained by the demolding step and B is an inner dimension of the mold corresponding to the outer dimension of the foamed resin molded body.

Provided is a method for suppressing deformation by contraction after molding of a vehicle seat member comprising a foamed resin molded body embedding a frame member. The method manufactures a vehicle seat member (1) including a foamed resin molded body (100) and a frame member (200) at least a part of which is embedded therein in which the frame member (200) includes frameworks (250), (260) extending inside the foamed resin molded body (100) along an outer shape (400) of the vehicle seat member (1) in plan view. The method comprises forming gaps (101), (101), (102), (102) along an extending direction of the frameworks (250), (260) between at least a part of the frameworks (250), (260) and a part of the foamed resin molded body (100) located on an outer side of the at least a part of the frameworks (250), (260).

A multifunctional seating system comprising a platform composed of the joint of crossbars with cruises made by inserting ends of the cruises into the internal tubular space of the crossbars is provided. The platform is provided with a geometrically distributed plurality of retaining pins constituting constraint and support of soft blades or other elements of completion.

A multifunctional seating system comprising a platform composed of the joint of crossbars with cruises made by inserting ends of the cruises into the internal tubular space of the crossbars is provided. The platform is provided with a geometrically distributed plurality of retaining pins constituting constraint and support of soft blades or other elements of completion.

A cushion includes a cushion core, adopting blasted sponge, and the cushion core comprising a main bearing area and an auxiliary bearing area; an outer cover layer, wrapping an outer layer of the cushion core, and the outer cover layer adopting a fiber material which is of a reticular structure; and a reinforcing skeleton comprising a plurality of bone bridges, and each bone bridge comprising an arch base and an arch bridge. For each bone bridge, the arch base is located at two side-by-side corners of one side of the cushion core, and is close to one side of the main bearing area; one end of the arch bridge is connected to the arch base, and the other end of the arch bridge extends to a diagonal opposite corner of the other side of the cushion core, and is close to one side of the auxiliary bearing area.

A cushion includes a cushion core, adopting blasted sponge, and the cushion core comprising a main bearing area and an auxiliary bearing area; an outer cover layer, wrapping an outer layer of the cushion core, and the outer cover layer adopting a fiber material which is of a reticular structure; and a reinforcing skeleton comprising a plurality of bone bridges, and each bone bridge comprising an arch base and an arch bridge. For each bone bridge, the arch base is located at two side-by-side corners of one side of the cushion core, and is close to one side of the main bearing area; one end of the arch bridge is connected to the arch base, and the other end of the arch bridge extends to a diagonal opposite corner of the other side of the cushion core, and is close to one side of the auxiliary bearing area.

An air cushion device for a seat includes at least one first air cushion and a second air cushion, first and second air inlets, first and second air ducts, and a device preventing the second air duct from being pinched off by a fixing wire of a seat cover.

There is provided a vehicle seat core member that is superior in terms of a dimensional accuracy as well as integrity of a thermoplastic resin expanded beads molded body and a frame member. A vehicle seat core member (100) is formed as an integrally molded article of a thermoplastic resin expanded beads molded body (10) and a frame member (20), the thermoplastic resin expanded beads molded body (10) is formed of thermoplastic resin expanded beads (30) having through holes (32), and a porosity of the thermoplastic resin expanded beads molded body (10) is 10 vol % or more and 40 vol % or less.

There is provided a vehicle seat core member that is superior in terms of a dimensional accuracy as well as integrity of a thermoplastic resin expanded beads molded body and a frame member. A vehicle seat core member (100) is formed as an integrally molded article of a thermoplastic resin expanded beads molded body (10) and a frame member (20), the thermoplastic resin expanded beads molded body (10) is formed of thermoplastic resin expanded beads (30) having through holes (32), and a porosity of the thermoplastic resin expanded beads molded body (10) is 10 vol % or more and 40 vol % or less.

A long synthetic resin foam body composed of a thermoplastic resin expanded beads-molded substrate and a frame having displacement regulating sections provided at both ends in the longitudinal or lateral direction of the substrate and a connecting section that connects the displacement regulating sections to each other. The substrate has at least one joint forming portion that divides the substrate in a direction intersecting the connecting section into two or more substrate parts. The joint forming portion has a joint that connects the adjacent two substrate parts to each other and is deformable to permit a relative displacement between the adjacent two substrate parts when the substrate contracts or expands.