US Patent No. 10,429,137

HEAT SINK


Patent No. 10,429,137
Issue Date October 01, 2019
Title Heat Sink
Inventorship Kenichi Okuaki, Yamanashi (JP)
Kazuhiro Yamamoto, Yamanashi (JP)
Assignee Fanuc Corporation, Yamanashi (JP)

Claim of US Patent No. 10,429,137

1. A heat sink comprising:a heat sink body made of a metal material which includes a plurality of heat radiating fins having a flat plate shape, the plurality of heat radiating fins being arranged parallel to each other on one surface side of a base having a flat plate shape at intervals in a direction along a surface of the base;
a bridge member made of a metal material which has a plurality of grooves parallel to each other, the plurality of grooves being formed at a pitch equal to an arrangement pitch of the plurality of heat radiating fins of the heat sink body, and the plurality of grooves accommodating distal ends of the respective heat radiating fins in a press-fitted state;
wherein the heat sink body includes a side plate extending parallel to the plurality of heat radiating fins from the base at both ends of the heat sink body in an arrangement direction of the plurality of heat radiating fins;
wherein the heat sink has a stepped portion on an inner side of a distal end of the side plate, the stepped portion accommodating an end edge of the bridge member; and
an upper surface of the bridge member is recessed from the surface of an upper end of the side plate in an extension direction of the side plate when the bridge member is mounted on the heat sink body by making the distal ends of the plurality of heat radiating fins press-fitted in the plurality of grooves.