Patent ID: 8926449
Filing Date: 2015-01-06
Classification: A63B

Abstract:
1. A golf club head comprising: a head main body; and a weight material detachably mounted in a weight material mounting portion in the head main body, an external screw thread on the weight material meshing with an internal screw thread in the weight material mounting portion, wherein: the weight material comprises a head portion having the external screw thread and a rod portion which projects from the head portion; the internal screw thread is provided on an entrance side and a cylindrical portion is provided on a deeper side for engagement with the rod portion in the weight material mounting portion; an opposite surface of the head portion that is opposite to the top end surface is formed into a recess portion, and a locking recess portion is provided in a deepest bottom surface of the recess portion; the rod portion comprises a small diameter portion which is inserted into the recess portion; and a locking projecting portion which projects from a distal end face of the small diameter portion; and a circumferential edge portion of an entrance of the weight material mounting portion is chamfered to thereby form a chamfered or tapered surface at the edge portion.