Golf club head

Abstract

A head 4 includes a head body m 1 and a recessed-part forming member b 1 . The head body m 1 includes an opening hs 1 for a recessed part, and a receiving part x 1 formed on at least a part of a periphery of the opening hs 1 for a recessed part. The recessed-part forming member b 1 is fixed to the opening hs 1 for a recessed part. A recessed part R is formed on an outer surface of the head by the recessed-part forming member b 1 . The recessed-part forming member b 1 is formed separately from the head body m 1 . The recessed-part forming member b 1 includes an outer extension part y 1 . The outer extension part y 1 is supported by the receiving part x 1 . The head 4 is hollow.

1 . A hollow golf club head comprising a head body and a recessed-part forming member, wherein
 the head body includes an opening for a recessed part and a receiving part formed on at least a part of a periphery of the opening for a recessed part,   the recessed-part forming member is fixed to the opening for a recessed part, and a recessed part is formed on an outer surface of the head by the recessed-part forming member,   the recessed-part forming member is formed separately from the head body,   the recessed-part forming member includes an outer extension part, and   the outer extension part is supported by the receiving part.   
     
     
         2 . The golf club head according to  claim 1 , wherein
 the head body includes a sole and a crown,   the head body is produced by casting,   the recessed-part forming member is attached to the sole, and   a shortest distance T 1  between the recessed-part forming member and the crown is equal to or less than 30 mm.   
     
     
         3 . The golf club head according to  claim 1  further comprising a weight body, wherein
 the weight body is disposed on the recessed part in a detachable state. 
 
     
     
         4 . The golf club head according to  claim 3 , further comprising a socket, wherein
 the socket is fixed in the recessed part,   relative rotation of an angle θ can be performed between the weight body and the socket,   the weight body can be attached to the socket by a rotation of the angle θ, and   the weight body can be detached from the socket by a reverse rotation of the angle θ.   
     
     
         5 . The golf club head according to  claim 1 , wherein
 the recessed part has a groove shape.   
     
     
         6 . The golf club head according to  claim 1 , wherein
 a toe-heel directional length of the recessed part is equal to or greater than 30 mm, and   a width of the recessed-part forming member is equal to or less than 25 mm, the width being measured along a face-back direction.   
     
     
         7 . The golf club head according to  claim 6 , wherein
 a cross section along a face-back direction of the recessed-part forming member is smoothly continuous.