| 摘要 |
A metal hollow golf club head includes a head main body, a top plate, and a face plate. The head main body includes both side edges and a rear edge of the crown portion, both side edges of a face portion, and a side portion integrally. The top plate includes a crown main portion, which is other member of the crown portion than the both side edges and rear edge of the crown portion, and an upper edge of the face portion integrally. The face plate includes a face main portion, which is other member of the face portion than the both side edges and upper edge of the face portion. The head main body, the top plate, and the face plate are coupled. Metal material of the top plate has longitudinal elastic modulus lower than metal materials of the head main body and face plate.
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