Abstract: In a cushion skin, left and right side surface skin front portions are fixed to a cushion frame of the seat cushion. The left and right side surface skin rear portions are respectively connected to the left and right side surface skin front portions, and each have a lower extending portion extending downward of the rear portion of the cushion pad. The connecting portion is disposed at the lower side of the rear portion of the cushion pad, and connects the distal end portions of each lower extending portion of the left and right side surface skin rear portions in the seat left-right direction. In each lower extending portion, a front side in the seat front-rear direction expands wider outward in the seat left-right direction than a rear side.

Abstract: A seat cushion frame configuring a framework of a seat cushion for an occupant of a vehicle to sit on and including left and right side frames and a cushion pan. The left and right side frames are disposed at left and right side portions of the seat cushion. The cushion pan connects upper end portions of front portions of the left and right side frames together in a seat left-right direction, and is weakened locally at a weakened portion provided at a seat left-right direction center of a rear end portion of the cushion pan.

Abstract: A vehicle seat frame includes a seat cushion frame, left and right links, a connection member, left and right slide rails, and left and right risers. The seat cushion frame includes left and right side frames. The left and right links each have a one end portion connected to respective front portions of the left and right side frames. The connection member connects the left and right links together in the seat left-right direction. The left and right slide rails are disposed below the left and right side frames and are attached to a floor section of the vehicle. The left and right risers are respectively attached to the left and right slide rails, are connected to respective other end portions of the left and right links, and are configured to be impacted by the connection member under load from the occupant during a head-on collision of the vehicle.

Abstract: A seatback frame including left and right side frames, a lower frame, and a sacrum support section. The left and right side frames extend in a seat up-down direction inside left and right side portions of a seatback of a vehicle seat. The lower frame spans between lower end portions of the left and right side frames. The sacrum support section extends from a lower end portion of the lower frame toward a seat front side and supports a sacral region of a seated occupant from a seat rear side. A weakened portion that is weakened by a load from the seat front side is provided to the sacrum support section.

Abstract: In a vehicle seat frame, a connection member that connects left and right links together in a seat left-right direction is disposed below a rear portion of a cushion pan included in a seat cushion frame. A sloped surface sloped with a downward gradient toward a seat rear side is formed at a lower surface of the rear portion of the cushion pan. The sloped surface of the cushion pan slides in a seat rearward and diagonally downward direction relative to the connection member when the cushion pan deforms in a seat downward direction under load from the occupant during a head-on collision of the vehicle.

Abstract: A seat cushion frame configuring framework of a seat cushion for an occupant of a vehicle to sit on, and including left and right side frames, a cushion pan, and a reinforcement member. The left and right side frames are disposed at left and right side portions of the seat cushion. The cushion pan connects upper end portions of front portions of the left and right side frames together in a seat left-right direction. The reinforcement member includes the left and right reinforcement portions respective affixed to the seat left-right direction sides of the rear end portion of the cushion pan.

Abstract: A fuel cell stack includes a stacked body, a first insulator and a second insulator. The stacked body includes power generation cells. The power generation cells are stacked in a stacking direction. The power generation cells include a first end power generation cell a second end power generation cell. Each of the power generation cells includes a membrane electrode assembly, a cathode separator and an anode separator. The first end power generation cell has an outermost cathode separator. The second end power generation cell has an outermost anode separator. The first insulator has a first recess in which a first heat-insulating body and a first terminal plate are accommodated. The second insulator has a second recess in which a second heat-insulating body and a second terminal plate are accommodated. A first number of first stacked heat-insulating layers is larger than a second number of second stacked heat-insulating layers.

Abstract: A fuel cell stack includes a stacked body, a first insulator, and a first shim. The stacked body includes electrolyte-electrode assemblies and separators. The electrolyte-electrode assemblies are stacked in a stacking direction and have a first end electrolyte-electrode assembly disposed at a first end of the stacked body. The separators includes a first end separator disposed at the first end of the stacked body between the first end electrolyte-electrode assembly and a first contact end plate having a first contact surface which the first end separator contacts. The first shim is provided in a first recess between the first contact end plate and the first insulator and has a thickness such that an outer peripheral surface of the first end separator is positioned between the first contact surface of the first contact end plate and an outer peripheral surface of the first insulator in the stacking direction.

Abstract: A fuel cell includes a membrane electrode assembly, a separator, a reactant gas channel, a reactant gas manifold, and a buffer portion. The buffer portion includes a first buffer region and a second buffer region. The second buffer region is located in a vicinity of the reactant gas manifold and is deeper than the first buffer region in a stacking direction. Embossed portion groups are arranged in a plurality of rows in the second buffer region between the reactant gas manifold and the first buffer region. Each of the embossed portion groups includes a plurality of embossed portions. A disposition density of the plurality of embossed portions of one of the embossed portion groups in a vicinity of the reactant gas manifold is lower than a disposition density of the plurality of embossed portions of another of the embossed portion groups in a vicinity of the first buffer region.

Abstract: A fuel cell stack includes fuel cells, a reactant gas channel, a reactant gas inlet manifold, a reactant gas outlet manifold, an inlet buffer portion, and an outlet buffer portion. A reactant gas flows through the reactant gas channel along a surface of a separator. The reactant gas flows through the reactant gas inlet manifold and the reactant gas outlet manifold in a stacking direction. The inlet buffer portion connects an inlet of the reactant gas channel to the reactant gas inlet manifold. The inlet buffer portion includes linear inlet guide protrusions. Inlet guide channels are provided between the linear inlet guide protrusions and connect the reactant gas inlet manifold to the reactant gas channel. A pitch between the linear inlet guide protrusions increases in accordance with an increase in a distance from the reactant gas inlet manifold to the linear inlet guide protrusions.

Abstract: A fuel cell stack includes a stacked body, a first insulator and a second insulator. The stacked body includes power generation cells. The power generation cells are stacked in a stacking direction. The power generation cells include a first end power generation cell a second end power generation cell. Each of the power generation cells includes a membrane electrode assembly, a cathode separator and an anode separator. The first end power generation cell has an outermost cathode separator. The second end power generation cell has an outermost anode separator. The first insulator has a first recess in which a first heat-insulating body and a first terminal plate are accommodated. The second insulator has a second recess in which a second heat-insulating body and a second terminal plate are accommodated. A first number of first stacked heat-insulating layers is larger than a second number of second stacked heat-insulating layers.

Abstract: A fuel cell stack includes a stacked body, a first insulator, and a first shim. The stacked body includes electrolyte-electrode assemblies and separators. The electrolyte-electrode assemblies are stacked in a stacking direction and have a first end electrolyte-electrode assembly disposed at a first end of the stacked body. The separators includes a first end separator disposed at the first end of the stacked body between the first end electrolyte-electrode assembly and a first contact end plate having a first contact surface which the first end separator contacts. The first shim is provided in a first recess between the first contact end plate and the first insulator and has a thickness such that an outer peripheral surface of the first end separator is positioned between the first contact surface of the first contact end plate and an outer peripheral surface of the first insulator in the stacking direction.

Abstract: A fuel cell stack has an asymmetrical triangular inlet buffer. An inlet connection channel connects a coolant supply passage on the upper side and the inlet buffer, and an inlet connection channel connects a coolant supply passage on the lower side and the inlet buffer. The number of flow grooves in the inlet connection channel is different from the number of flow grooves in the inlet connection channel.

Abstract: A power generation unit of a fuel cell stack includes a first metal separator, a first membrane electrode assembly, a second metal separator, a second membrane electrode assembly, and a third metal separator. A first oxygen-containing gas flow field includes a plurality of wavy flow grooves. An outlet merging area is provided at the end of the wavy flow grooves on the outlet side. The outlet merging area is connected to a plurality of straight connection flow grooves. The groove depth of the straight connection flow grooves is smaller than the groove depth of the wavy flow grooves.

Abstract: A fuel cell stack includes a stack body formed by stacking a plurality of power generation cells. At one end of the stack body, a terminal plate, an insulating member, and an end plate are stacked. At the other end of the stack body, a terminal plate, an insulating member, and an end plate are stacked. A coolant channel is formed between the insulating member and the end plate for allowing a coolant to flow along a surface of the end plate.

Abstract: A fuel cell system mounted in a vehicle includes a fuel cell stack, a coolant supply mechanism, and a fuel gas supply mechanism. The coolant supply mechanism includes a coolant supply pipe and a coolant discharge pipe, provided on a front side in a traveling direction of the vehicle, relative to the fuel cell stack. The fuel gas supply mechanism includes a fuel gas supply pipe, provided on a rear side in the traveling direction, relative to the fuel cell stack.

Abstract: A fuel cell includes a membrane electrode assembly, a separator, a reactant gas channel, a reactant gas manifold, and a buffer portion. The buffer portion includes a first buffer region and a second buffer region. The second buffer region is located in a vicinity of the reactant gas manifold and is deeper than the first buffer region in a stacking direction. Embossed portion groups are arranged in a plurality of rows in the second buffer region between the reactant gas manifold and the first buffer region. Each of the embossed portion groups includes a plurality of embossed portions. A disposition density of the plurality of embossed portions of one of the embossed portion groups in a vicinity of the reactant gas manifold is lower than a disposition density of the plurality of embossed portions of another of the embossed portion groups in a vicinity of the first buffer region.

Abstract: A fuel cell stack includes fuel cells, a reactant gas channel, a reactant gas inlet manifold, a reactant gas outlet manifold, an inlet buffer portion, and an outlet buffer portion. A reactant gas flows through the reactant gas channel along a surface of a separator. The reactant gas flows through the reactant gas inlet manifold and the reactant gas outlet manifold in a stacking direction. The inlet buffer portion connects an inlet of the reactant gas channel to the reactant gas inlet manifold. The inlet buffer portion includes linear inlet guide protrusions. Inlet guide channels are provided between the linear inlet guide protrusions and connect the reactant gas inlet manifold to the reactant gas channel. A pitch between the linear inlet guide protrusions increases in accordance with an increase in a distance from the reactant gas inlet manifold to the linear inlet guide protrusions.

Abstract: A power generation unit of a fuel cell stack includes a first metal separator, a first membrane electrode assembly, a second metal separator, a second membrane electrode assembly, and a third metal separator. A first oxygen-containing gas flow field includes a plurality of wavy flow grooves. An outlet merging area is provided at the end of the wavy flow grooves on the outlet side. The outlet merging area is connected to a plurality of straight connection flow grooves. The groove depth of the straight connection flow grooves is smaller than the groove depth of the wavy flow grooves.

Abstract: A fuel cell stack includes a stack body formed by stacking a plurality of power generation cells. At one end of the stack body, a terminal plate, an insulating member, and an end plate are stacked. At the other end of the stack body, a terminal plate, an insulating member, and an end plate are stacked. A coolant channel is formed between the insulating member and the end plate for allowing a coolant to flow along a surface of the end plate.