Patent ID: 7993214

Claim:
A golf club head provided with a hollow structure comprising a face portion of which front surface forms a clubface, a crown portion, a sole portion and a side portion between the crown portion and sole portion, the face portion comprising: a central thick part; a crown-side thick part extending from the central thick part toward the crown portion; a sole-side thick part extending from said central thick part towards the sole portion; a toe-side thinner part formed on the toe-side of the crown-side thick part, central thick part and sole-side thick part; and a heel-side thinner part formed on the heel-side of the crown-side thick part, central thick part and sole-side thick part, wherein a thickness Tc of the central thick part, thicknesses Tr of the crown-side thick part and sole-side thick part, a thickness TT of the toe-side thinner part, and a thickness TH of the heel-side thinner part satisfy the following conditional expressions: (1) Tc >=Tr >TT, and (2) Tr >TH, and a centroid of the central thick part is positioned on the toe-side of an extension of a widthwise center line of the crown-side thick part towards the sole portion and on the heel-side of an extension of a widthwise center line of the sole-side thick part towards the crown portion, wherein the widthwise center line of the crown-side thick part and the widthwise center line of the sole-side thick part are each inclined to the toe from the crown towards the sole at an angle of from 10 to 40 degrees with respect to the vertical direction.