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公开(公告)号：US11052800B2
公开(公告)日：2021-07-06
申请号：US16486269
申请日：2018-02-15
Applicant: JSP CORPORATION
Inventor： Atsuo Takayama , Keiichi Hashimoto , Katsunori Hisamatsu
IPC: B60N2/70
Abstract: A seat core material of the present invention is a seat core material for vehicle including a thermoplastic resin expanded bead article and a frame member embedded in a peripheral edge portion of the expanded bead article. The frame member includes a front frame part, a rear frame part, and two side frame parts interconnecting the front frame part and the rear frame part. Slits crossing the two side frame parts are formed along a longitudinal direction with continuous parts left intact outside the side frame parts on both ends of the expanded bead article. The slit penetrates or does not penetrate the expanded bead article in a thickness direction. The continuous parts are formed in a curved shape or a bent shape.
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公开(公告)号：US10893750B2
公开(公告)日：2021-01-19
申请号：US16062644
申请日：2016-12-20
Applicant: JSP CORPORATION
Inventor： Atsuo Takayama , Motoaki Ueguri , Keiichi Hashimoto
IPC: A47C7/18 , B60N2/90 , A47C27/14 , A47C7/24 , B60N2/68 , B29C39/10 , B60N2/70 , B29L31/58 , B60N2/58
Abstract: A method for producing a seat core material that has a foamed molded substrate and a frame member embedded in a periphery thereof, which includes, as step (a), heating thermoplastic resin expanded beads in a mold cavity, in which the frame member has been disposed, to fusion-bond the expanded beads to each other and to obtain the foamed molded substrate with the frame member being embedded in the periphery thereof; and, as step (b), simultaneously with step (a) or after step (a), forming a void cavity S, S′ in the foamed molded substrate at a position along and adjacent to the frame member. The void cavity S, S′ has a size and shape that allows a relative displacement between the frame member and the foamed molded substrate when the foamed molded substrate shrinks after step (b).
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公开(公告)号：US10717370B2
公开(公告)日：2020-07-21
申请号：US16067645
申请日：2017-02-03
Applicant: JSP CORPORATION
Inventor： Katsunori Hisamatsu , Atsuo Takayama , Keiichi Hashimoto
IPC: B32B1/02 , B60N2/005 , B60N2/90 , B29C67/20 , B60N2/70 , B29C44/44 , C08J9/232 , B60N2/68 , A47C7/00 , A47C7/02 , A47C7/16 , A47C7/20 , A47C27/14 , B29L31/00 , B29K105/04
Abstract: 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.
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公开(公告)号：US12152121B2
公开(公告)日：2024-11-26
申请号：US17995082
申请日：2021-03-26
Applicant: JSP Corporation
Inventor： Keiichi Hashimoto , Katsunori Hisamatsu , Shogo Iwasaki
Abstract: A vehicle seat core material includes a molded article that includes thermoplastic resin expanded beads. The molded article has a substantially rectangular shape in a top view, and has a front side and a rear side opposite the front side. The molded article has an average density (Z) of 20 kg/m3 to 50 kg/m3. The molded article includes, on the rear side of the molded article, a rear thin portion having a thickness of 10 mm to 40 mm, the thickness of the rear thin portion being smaller than an average thickness of the molded article. A ratio (Y/Z) of a density (Y) of the rear thin portion to the average density (Z) of the molded article is 1.05 to 3. The rear thin portion of the molded article has a fusion rate of 70% or more.
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Patent Agency Ranking
公开(公告)号：US11224292B2
公开(公告)日：2022-01-18
申请号：US16474225
申请日：2017-12-27
Applicant: JSP CORPORATION
Inventor： Keiichi Hashimoto , Katsunori Hisamatsu , Atsuo Takayama
Abstract: A seat core material having reduced deformation, extremely excellent dimensional accuracy, sense of unity, and strength is thus provided. The frame member and the foamed particle molding are integrated in the seat core material.
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公开(公告)号：US09902098B2
公开(公告)日：2018-02-27
申请号：US15509966
申请日：2015-09-15
Applicant: JSP CORPORATION
Inventor： Atsuo Takayama , Motoaki Ueguri , Keiichi Hashimoto
IPC: A47C7/18 , A47C7/20 , B29C44/12 , B29C44/56 , B60N2/005 , B60N2/64 , B29K23/00 , B29L31/00 , B29K705/12
CPC classification number: B29C44/1271 , B29C44/00 , B29C44/56 , B29K2023/12 , B29K2705/12 , B29L2031/58 , B29L2031/771 , B60N2/005 , B60N2/646 , B60N2/90
Abstract: A method for manufacturing including securing attachments disposed near both ends in the seat core member front portion made of a molded article of expanded beads, the securing attachments being connected by an embedded connecting member extending in the seat core member longitudinal direction. The securing attachment includes a base embedded in the molded article of expanded beads, an upright frame joined to the base to extend out of the molded article of expanded beads, and a securing portion extending from the upright frame to project away from the molded article of expanded beads. The method includes creating, during or after molding the molded article of expanded beads, a space or notch in an outer side of the securing attachment upright frame of the molded article of expanded beads in the seat core member longitudinal direction, the notch extending toward an outer side in the seat core member longitudinal direction.
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公开(公告)号：US10807507B2
公开(公告)日：2020-10-20
申请号：US16484264
申请日：2018-02-06
Applicant: JSP CORPORATION
Inventor： Keiichi Hashimoto , Katsunori Hisamatsu , Atsuo Takayama
Abstract: A seat core material of the present invention is a seat core material for vehicle including: a thermoplastic resin expanded bead article; and a frame member embedded in a peripheral edge portion of the expanded bead article. The expanded bead article has two or more lightening parts in an area from a center portion as seen in a front-back direction to a rear side. A through or non-through slit is provided in a continuous part between the lightening parts or an area in front of the continuous part over a distance of 100 mm or less along a vehicle-width direction of the expanded bead article. The slit is closed at both longitudinal ends.
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公开(公告)号：US10195966B2
公开(公告)日：2019-02-05
申请号：US15558498
申请日：2016-03-04
Applicant: JSP Corporation
Inventor： Motoaki Ueguri , Atsuo Takayama , Keiichi Hashimoto
Abstract: A seat core member of a seat portion provided with the seat core member made of a hard synthetic resin foam and a cushion layer made of a soft synthetic resin foam and covering the seat core member is provided, and the seat core member includes a plurality of ridges extending in a rising direction of the seat core member in a rising portion of the seat core member being in contact with the cushion layer and opposing to calves of a body is formed.
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9.发明授权公开(公告)号：US10391911B2
公开(公告)日：2019-08-27
申请号：US15750854
申请日：2016-07-22
Applicant: JSP CORPORATION
Inventor： Atsuo Takayama , Keiichi Hashimoto , Motoaki Ueguri
IPC: B60N2/90 , B32B5/32 , B32B5/20 , B60N2/64 , B29C67/20 , B29C44/04 , B29C44/06 , B29C44/34 , B29C44/44 , B29K23/00 , B29K75/00 , B29L31/00
Abstract: A composite seat core material is configured from: a base portion that is formed by fusing thermoplastic resin foamed particles having no through-hole to each other; and a connecting portion that is provided on the upper side of the base portion, and is formed by fusing foamed particles having through-holes to each other, the connecting portion having interconnected void spaces that communicates with the outside. With the outer surface of the connection portion partially exposed at the top surface of the composite seat core material, the base portion and the connecting portion are fixed and integrated with each other. A seat member is formed by laminating a polyurethane foam pad on the top surface of the composite seat core material.
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