Bridgestone Corporation

Archem Inc.

Taisuke Yonezawa

Yoshiyuki Takahashi

Yukiko Tsugawa

Kenji Kumagai

Taichi Itabashi

Yukiko Yamaguchi

Toshimitsu Shinohara

Teruo Iwai

Hiroyuki Kuroki

Yutaka Hirata

Masanori Okumura

Yoshinori Ohashi

A seat pad manufacturing method is provided. The method includes disposing a sheet member inside a foaming mold for shaping a seat pad, then injecting a foaming resin material into the foaming mold and foaming a resin foamed body through mold clamping, and demolding the resin foamed body in a state in which the sheet member is buried in the resin foamed body. Both end parts of the sheet member in the right-left direction and both end parts of the sheet member in the extending direction are each temporarily fastened to the surface of the mold through a fastener. The foaming resin material is injected into a space between the mold surface and the sheet member. A central part of the sheet member deforms into a shape curved in a convex shape as the sheet member is pressed upward through expansion of the foaming resin material.

Seat pad manufacturing method

A cushion memberis a cushion member made of flexible resin or rubber and used for a passenger seat, and includes a porous structural body, and a top skinserving as at least a surface FS on a seated person side among surfaces of the passenger seat and integrated with the porous structural body.

Cushion member, cushion member manufacturing method, and passenger seat

A seat padis a seat pad including a resin foamed bodyand a sheet memberburied in the resin foamed body, and when a direction orthogonal to a right-left direction and a thickness direction of the seat pad is referred to as an extending direction of the seat pad, at least a central part of the sheet member is curved in a convex shape on a back surface side of the seat pad in the extending direction.

Seat pad and seat pad manufacturing method

Provided is a cushion pad, in which a seating body portion of a seating portion has a bottomless or bottomed first hole arranged at a position at which the first hole overlaps a pair of ischial bones of a seated person in a horizontal projection plane and three or more bottomless or bottomed second holes with areas that are smaller than an area of the first hole in a horizontal projection plane, a center point Oof the first hole is on or inside a triangle TR obtained by connecting center points of any three second holes from among the three or more second holes in the horizontal projection plane and in the seating portion, the inside of the first hole is a void space, or a soft material portion is arranged inside the first hole.

Cushion pad

In a vehicle seat pad, a seating portion has a plurality of bottomless or bottomed holes, and in a horizontal projection plane, a ratio RU of a total area of under-femoral-region holes in an upper surface of a femoral region-placed portion with respect to an entire area of the femoral region-placed portion, a ratio RCU of a total area of under-hip holes in an upper surface of an under-hip center portion with respect to an entire area of the under-hip center portion, and a ratio RSU of a total area of under-hip holes in upper surfaces of a pair of under-hip side portions with respect to entire areas of the pair of under-hip side portions satisfy RU&#x3e;RCU&#x3e;RSU.

Vehicle seat pad

According to the disclosure, a seat padincludes a bag-contained pad partincluding a foam bodyand a bag bodyarranged inside the foam body

Seat pad, vehicle seat, vehicle seat controlling method, and seat pad manufacturing method

According to the present invention, a side part cavity () in which a side part is molded, a body part cavity () in which a body part is molded, and an attachment part cavity () in which an attachment part is molded are formed between a plurality of molding molds (), and a guiding part () that is configured to guide a foam to the body part cavity when an undiluted foam solution of the second synthetic resin material supplied to the side part cavity foams is arranged at a part of the side part cavity adjacent to, in a left-right direction X, a rear end part of the body part cavity in which a non-contact part is molded.

Foam molding mold and method for manufacturing foam molding body

A vehicle seat according to the present disclosure includes a pad including a foam, and a volume adjustment mechanism that allows adjustment of a volume of the foam. An adjustment method for a pad vibration characteristic according to the present disclosure adjusts a volume of a foam included in a pad to adjust a vibration characteristic of the pad.

Vehicle seat and adjustment method for pad vibration characteristic

A seat padcomprises a cushion padas a seat portion to be sat on, wherein a high ventilation memberhigher in ventilation property than a cushion pad member forming the cushion padis embedded in a part of the cushion padexcept a under-hip portion located under hips when sitting, in a state of being exposed only to a rear side of the cushion pad.

Seat pad

According to the present invention, in a plan view of a seat surface (), a plane area of a part surrounded by an inner edge () of a rear part () in a left-right direction (X) and a contour (L) is larger than a plane area of a part sandwiched by an inner edge () of a front part () in the left-right direction (X) and the contour (L) in the left-right direction (X). In addition, a part of a pair of left and right second synthetic resin materials forming a lower part having a maximum gap therebetween in the left-right direction (X) is positioned in a thigh rest part () and a part having a minimum gap is positioned in a hip rest part (), and a maximum value (W) of the gap between the pair of left and right second synthetic resin materials forming the lower part in the left-right direction (X) is two times or more a minimum value (W) of the gap in the left-right direction (X).

Molded foam body

A seat pad () of the present invention includes a placement surface (). A lateral slit portion () which extends from an outer side of the seat pad () toward an inner side thereof is formed in a first lateral direction (B) along the placement surface (), and at least a portion of the lateral slit portion () gradually becomes larger from the outer side of the seat pad () toward the inner side thereof in a thickness direction (H) orthogonal to the placement surface () along the first lateral direction (B).

A seat pad () of the present invention includes a placement surface (). A lateral slit portion () which extends from an outer side of the seat pad () toward an inner side thereof is formed in a first lateral direction (B) along the placement surface (), and the lateral slit portion () is curved and thereby protrudes in a thickness direction (H) orthogonal to the placement surface ().

Provided is a seat pad () having a placing surface (), wherein a lateral slit section () extending from an outer side toward an inner side of the seat pad () is formed in a first lateral direction (B) along the placing surface (), and at least a portion of the lateral slit section () gradually becomes smaller in a thickness direction (H) perpendicular to the placing surface () from the outer side toward the inner side of the seat pad () in the first lateral direction (B).

A flexible polyurethane foam molded article includes a plurality of layer parts (Lto L) that are layered in a vertical direction (Y) perpendicular to a stage surface (A). When the entire flexible polyurethane foam molded article is compressed by 15% in the vertical direction (Y), the front surface layer (L) positioned closest to the stage surface (A) in the vertical direction (Y) among the plurality of layer parts (Lto L) has the lowest residual thickness ratio in the vertical direction (Y) among the plurality of layer parts (Lto L). When the entire flexible polyurethane foam molded article is compressed by 50% in the vertical direction (Y), the back surface layer (L) positioned closest to a non-stage surface (B) of the flexible polyurethane foam molded article in the vertical direction (Y) among the plurality of layer parts (Lto L) has the highest residual thickness ratio in the vertical direction (Y) among the plurality of layer parts (Lto L).

Flexible polyurethane foam molded article, and seat pad

A seat pad () having a loading surface (). In the seat pad (), a lateral slit portion (), extending from the outside towards the inside of the seat pad () in a first lateral direction (B) that is parallel to the loading surface (), is formed. A longitudinal slit portion () is provided at an end portion of the lateral slit portion (), in a second lateral direction (B) that is orthogonal to the first lateral direction (B) and that is parallel to the loading surface (). The longitudinal slit portion () extends from the lateral slit portion () towards the loading surface () in a thickness direction (H) that is orthogonal to the loading surface ().

Growing community of inventors

Tokyo, Japan

Taisuke Yonezawa