US 11,855,315 B2
Separator-integrated gasket
Hajime Yui, Fujisawa (JP); Toshihiro Shimazoe, Fujisawa (JP); and Ryo Tomita, Fujisawa (JP)
Assigned to NOK CORPORATION, Tokyo (JP)
Filed by NOK CORPORATION, Tokyo (JP)
Filed on Mar. 5, 2021, as Appl. No. 17/193,450.
Claims priority of application No. 2020-039038 (JP), filed on Mar. 6, 2020.
Prior Publication US 2021/0280880 A1, Sep. 9, 2021
Int. Cl. H01M 8/0276 (2016.01); H01M 8/0286 (2016.01); H01M 8/0273 (2016.01)
CPC H01M 8/0276 (2013.01) [H01M 8/0273 (2013.01); H01M 8/0286 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A separator-integrated gasket comprising:
a separator main body for a fuel cell; and
an elastic gasket that is integral with the separator main body, wherein
the separator main body includes a stepped protruding section protruding from a flat section thereof, the stepped protruding section having a bead with a convex shape protruding toward a same direction as the stepped protruding section and a pair of protrusions protruding toward the same direction as the bead located directly adjacent opposite sides of the bead
the pair of protrusions are formed so that an amount of protrusion of the pair of protrusions from the surface of the flat section of the separator main body does not increase as the distance from a center part of the bead increases,
liquid rubber applied to the bead is blocked by the protrusions, and
the elastic gasket is formed when the liquid rubber is cured and covers a boundary section between the bead and each of the pair of protrusions.