Iron type golf club head and iron type golf club set

An iron type golf club head having a club face provided with face lines extending in a toe-heel direction of the head, and comprising a head main body and an external weight member secured to a sole portion of the head main body and extending in the toe-heel direction, wherein

• the specific gravity of the external weight member is larger than the specific gravity of the head main body,
• the center of gravity of the external weight member is located on a toe-side of a middle point in the toe-heel direction of the face lines,
• wherein
• the external weight member comprises a wide portion and a narrow portion where the width of the external weight member in a front-back direction of the head is larger in the wide portion than in the narrow portion,
• the wide portion is located on the toe side of the middle point in the toe-heel direction of the face lines, and
• the narrow portion is located on a heel side of the wide portion,
• wherein
• the wide portion has a first edge on a club face side which extends along a leading edge of the sole portion,
• the narrow portion has a second edge on the club face side which extends along the leading edge of the sole portion, and
• the first edge is located closer to the leading edge of the sole portion than the second edge in a bottom view of the golf club head,
• wherein
• the wide portion is disposed such that the extent in the toe-heel direction of the wide portion includes a position in the toe-heel direction of a most toe-side end of the face lines,
• wherein
• the width of the wide portion measured at the position in the toe-heel direction of the most toe-side end of the face lines is 23 mm or more.

An iron type golf club head having a club face provided with face lines extending in a toe-heel direction of the head, and comprising a head main body and an external weight member secured to a sole portion of the head main body and extending in the toe-heel direction, wherein

• the specific gravity of the external weight member is larger than the specific gravity of the head main body,
• the center of gravity of the external weight member is located on a toe-side of a middle point in the toe-heel direction of the face lines,
• wherein
• the external weight member comprises a wide portion and a narrow portion where the width of the external weight member in a front-back direction of the head is larger in the wide portion than in the narrow portion,
• the wide portion is located on the toe side of the middle point in the toe-heel direction of the face lines, and
• the narrow portion is located on a heel side of the wide portion,
• wherein
• the wide portion has a first edge on a club face side which extends along a leading edge of the sole portion,
• the narrow portion has a second edge on the club face side which extends along the leading edge of the sole portion, and
• the first edge is located closer to the leading edge of the sole portion than the second edge in a bottom view of the golf club head,
• wherein
• the wide portion is disposed such that the extent in the toe-heel direction of the wide portion includes a position in the toe-heel direction of a most toe-side end of the face lines,
• wherein
• the narrow portion is disposed such that the extent in the toe-heel direction of the narrow portion includes the position in the toe-heel direction of the middle point in the toe-heel direction of the face lines, and
• wherein
• the width of the wide portion measured at the position in the toe-heel direction of the most toe-side end of the face lines is 23 mm or more.

An iron type golf club set including a plurality of iron type golf clubs having different loft angles and each comprising an iron type golf club head

• which has a club face provided with face lines extending in a toe-heel direction of the head, and comprises a head main body and an external weight member secured to a sole portion of the head main body and extending in the toe-heel direction,
• wherein
• the specific gravity of the external weight member is larger than the specific gravity of the head main body,
• the center of gravity of the external weight member is located on a toe-side of a middle point in the toe-heel direction of the face lines,
• wherein
• the external weight member comprises a wide portion and a narrow portion where the width of the external weight member in a front-back direction of the head is larger in the wide portion than in the narrow portion,
• the wide portion is located on the toe side of the middle point in the toe-heel direction of the face lines, and
• the narrow portion is located on a heel side of the wide portion,
• wherein
• the wide portion has a first edge on a club face side which extends along a leading edge of the sole portion,
• the narrow portion has a second edge on the club face side which extends along the leading edge of the sole portion, and
• the first edge is located closer to the leading edge of the sole portion than the second edge in a bottom view of the golf club head,
• wherein
• the distance measured in the toe-heel direction of the head between the center of gravity of the external weight member and the middle point in the toe-heel direction of the face lines becomes larger as the loft angle becomes smaller.