Iron type golf club head
View Patent ↗An iron type golf club head has a toe inclination visually recognizing part and a heel inclination visually recognizing part. The toe inclination visually recognizing part, which is provided on a toe side of a face surface, formed by a visible boundary between a toe side region of the face surface and a center region of the face surface, can be visually recognized to be inclined to a heel side from the toe side in a direction toward a sole side from a top side. The heel inclination visually recognizing part, which is formed on the heel side of the face surface, formed by a visible boundary between a heel side region of the face surface and a center region of the face surface, can be visually recognized to be inclined to the heel side from the toe side in a direction toward the sole side from the top side.
1. An iron type golf club head comprising a face surface including a toe inclination visually recognizing part and a heel inclination visually recognizing part, the toe inclination visually recognizing part provided on a toe side of the face surface, formed by a visible boundary between a toe side region of the face surface and a center region of the face surface, the heel inclination visually recognizing part provided on the heel side of the face surface, formed by a visible boundary between a heel side region of the face surface and the center region of the face surface, wherein, with the club head supported on a level surface and disposed at its designed lie angle and real loft angle;
the toe inclination visually recognizing part is inclined to the heel side from the toe side in a direction toward a sole side from a top side;
the heel inclination visually recognizing part is inclined to the heel side from the toe side in a direction toward the sole side from the top side;
the inclination of the toe inclination visually recognizing part to the heel side from the toe side in a direction toward the sole side from the top side is discernible when viewed vertically downwardly along a vertical plane that includes the axis of a shaft hole of the club head from a vantage point directly above the center region of the face surface;
the inclination of the heel inclination visually recognizing part to the heel side from the toe side in a direction toward the sole side from the top side is discernible when viewed vertically downwardly along a vertical plane that includes the axis of the shaft hole from a vantage point directly above the center region of the face surface;
an inclination angle α 1 of the toe inclination visually recognizing part with respect to a vertical direction reference line is no less than 5 degrees and no more than 15 degrees, wherein the vertical reference line is parallel to a line formed by the intersection of the club face with a vertical plane that includes a line perpendicular to the club face and extending through the centroid of the club head;
an inclination angle α 2 of the heel inclination visually recognizing part with respect to the vertical direction reference line is no less than 5 degrees and no more than 15 degrees; and
the real loft angle B is no less than 50 degrees and no more than 70 degrees.
2. The iron type golf club head according to claim 1 , wherein;
a face line is provided on the face surface;
the face line is inclined to the top side from the sole side in a direction toward the heel side from the toe side; and
an inclination angle β of the face line with respect to a horizontal direction reference line is no less than 5 degrees and no more than 15 degrees, wherein the horizontal direction reference line is formed by the intersection of the club face with a horizontal plane.
3. The iron type golf club head according to claim 2 , wherein a ratio (B/β) of the real loft angle B to the inclination angle β is no less than 5 and no more than 10.
4. The iron type golf club head according to claim 2 , wherein;
a plurality of face lines is provided on the face surface;
a plurality of longest face lines of the face lines exists;
the toe inclination visually recognizing part is formed by arrangement of the toe side ends of the plurality of longest face lines; and
the heel inclination visually recognizing part is formed by arrangement of the heel side ends of the plurality of longest face lines.
5. The iron type golf club head according to claim 1 , wherein;
a plurality of face lines is provided on the face surface;
a plurality of longest face lines of the face lines exists;
the toe inclination visually recognizing part is formed by arrangement of the toe side ends of the plurality of longest face lines; and
the heel inclination visually recognizing part is formed by arrangement of the heel side ends of the plurality of longest face lines.
6. The iron type golf club head according to claim 1 , wherein;
the toe inclination recognizing part is formed by a difference between a surface treatment of the center region and a surface treatment of the toe side region; and
the heel inclination recognizing part is formed by a difference between a surface treatment of the center region and a surface treatment of the heel side region.