Iron type golf club head

摘要

An iron type golf club head that comprises a face part, a sole part, a hosel part, and a cavity part. A lower part of an inner surface of the cavity part on a face surface side is a forward recess part that is recessed toward a face surface, and following formulas are satisfied:
θ2≦θ3 and θ2≦θ1
wherein an intersectional angle that is formed between the lower part of the inner surface of the cavity part on the face surface side and the face surface is marked with θ2, an intersectional angle that is formed between a rear surface of the cavity part and the face surface is marked with θ3, and an intersectional angle that is formed between a bottom surface of the cavity part and the face surface is marked with θ1.

主权项

1. An iron type golf club head that comprises a face part, a sole part, a hosel part, and a cavity part, wherein
a lower part of an inner surface of the cavity part on a face surface side is a forward recess part that is recessed toward a face surface, and the following formulas are satisfied:
θ2≦θ3 and θ2≦θ1,wherein an intersectional angle that is formed between the lower part of the inner surface of the cavity part on the face surface side and the face surface is marked with θ2, an intersectional angle that is formed between a rear surface of the cavity part and the face surface is marked with θ3, and an intersectional angle that is formed between a bottom surface of the cavity part and the face surface is marked with θ1,
the bottom surface of the cavity part, which forms the intersectional angle (θ1), inclines such that the bottom surface approaches a sole surface of the sole part as the bottom surface approaches the face part, and the intersectional angle (θ1) is 90° or less.