Golf club head

Abstract

A golf club head includes a face portion including a striking face, a body portion, and a weight member disposed in the body portion. The body portion includes a weight receiving portion on which the weight member is disposed. A toe-heel directional length of the weight member is greater than a top-sole directional length of the weight member. The body portion includes a sole thin-wall portion whose outer surface constitutes a part of a sole surface and whose wall thickness is 0.8 mm or greater and 4.6 mm or less. An inner surface of the sole thin-wall portion includes: a weight contact surface constituting a part of the weight receiving portion and being in contact with the weight member; and a space facing surface located on a face side of the weight contact surface and facing an empty space. The weight member is not exposed outside the golf club head.

What is claimed is: 
     
         1 . A golf club head comprising: a striking face, and a sole surface, wherein
 the golf club head includes a face portion including the striking face, a body portion, and a weight member disposed in the body portion,   the body portion includes a weight receiving portion on which the weight member is disposed,   the weight member is coupled to the weight receiving portion,   a toe-heel directional length of the weight member is greater than a top-sole directional length of the weight member,   the body portion includes a sole thin-wall portion whose outer surface constitutes a part of the sole surface and that has a wall thickness of greater than or equal to 0.8 mm and less than or equal to 4.6 mm,   an inner surface of the sole thin-wall portion includes: a weight contact surface that constitutes a part of the weight receiving portion and is in contact with the weight member; and a space facing surface that is located on a face side of the weight contact surface and faces an empty space, and   the weight member is not exposed outside the golf club head.   
     
     
         2 . The golf club head according to  claim 1 , wherein the sole thin-wall portion extends continuously from a position located on a sole side of the weight member to the face portion. 
     
     
         3 . The golf club head according to  claim 1 , wherein an entirety of the sole thin-wall portion is included in an integrally-formed single-piece member. 
     
     
         4 . The golf club head according to  claim 1 , wherein
 when the top-sole directional length of the weight member is denoted by D 2 , and a top-sole directional height of the golf club head at a position of a face center is denoted by H 1 , then D 2 /H 1  is greater than or equal to 0.05 and less than or equal to 0.5.   
     
     
         5 . The golf club head according to  claim 1 , wherein
 when a sweet spot height is denoted by H 2 , and a top-sole directional height of the golf club head at a position of a face center is denoted by H 1 , then H 2 /H 1  is greater than or equal to 0.30 and less than or equal to 0.50.   
     
     
         6 . The golf club head according to  claim 1 , wherein
 when a depth of a center of gravity of the golf club head is denoted by D 4 , and a face-back directional thickness of the golf club head at a position of a face center is denoted by D 5 , then D 4 /D 5  is greater than or equal to 0.10 and less than or equal to 0.50.   
     
     
         7 . The golf club head according to  claim 1 , wherein
 when a projected area of the weight member obtained by projecting the weight member onto the striking face is denoted by S 1 , and an area of the striking face is denoted by S 2 , then S 1 /S 2  is greater than or equal to 0.03 and less than or equal to 0.17.   
     
     
         8 . A golf club head comprising: a striking face, and a sole surface, wherein
 the golf club head includes a face portion including the striking face, a body portion, and a weight member disposed in the body portion,   the body portion includes a weight receiving portion on which the weight member is disposed,   the weight member is coupled to the weight receiving portion,   the weight member has a specific gravity of greater than or equal to 9 and less than or equal to 20,   the body portion includes a sole thin-wall portion whose outer surface constitutes a part of the sole surface and that has a wall thickness of greater than or equal to 0.8 mm and less than or equal to 4.6 mm,   an inner surface of the sole thin-wall portion includes: a weight contact surface that constitutes a part of the weight receiving portion and is in contact with the weight member; and a space facing surface that is located on a face side of the weight contact surface and faces an empty space, and   the weight member is not exposed outside the golf club head.   
     
     
         9 . The golf club head according to  claim 8 , wherein the sole thin-wall portion extends continuously from a position located on a sole side of the weight member to the face portion. 
     
     
         10 . The golf club head according to  claim 8 , wherein an entirety of the sole thin-wall portion is included in an integrally-formed single-piece member. 
     
     
         11 . The golf club head according to  claim 8 , wherein
 when a top-sole directional length of the weight member is denoted by D 2 , and a top-sole directional height of the golf club head at a position of a face center is denoted by H 1 , then D 2 /H 1  is greater than or equal to 0.05 and less than or equal to 0.5.   
     
     
         12 . The golf club head according to  claim 8 , wherein
 when a sweet spot height is denoted by H 2 , and a top-sole directional height of the golf club head at a position of a face center is denoted by H 1 , then H 2 /H 1  is greater than or equal to 0.30 and less than or equal to 0.50.   
     
     
         13 . The golf club head according to  claim 8 , wherein
 when a depth of a center of gravity of the golf club head is denoted by D 4 , and a face-back directional thickness of the golf club head at a position of a face center is denoted by D 5 , then D 4 /D 5  is greater than or equal to 0.10 and less than or equal to 0.50.   
     
     
         14 . The golf club head according to  claim 8 , wherein
 when a projected area of the weight member obtained by projecting the weight member onto the striking face is denoted by S 1 , and an area of the striking face is denoted by S 2 , then S 1 /S 2  is greater than or equal to 0.03 and less than or equal to 0.17.   
     
     
         15 . A golf club head comprising: a striking face, and a sole surface, wherein
 the golf club head includes a face portion including the striking face, a body portion, and a weight member disposed in the body portion,   the body portion includes a weight receiving portion on which the weight member is disposed,   the weight member is coupled to the weight receiving portion,   when the weight member is divided into a toe side portion and a heel side portion by a vertical cross section passing through a face center, a weight of the toe side portion is greater than a weight of the heel side portion,   the body portion includes a sole thin-wall portion whose outer surface constitutes a part of the sole surface and that has a wall thickness of greater than or equal to 0.8 mm and less than or equal to 4.6 mm,   an inner surface of the sole thin-wall portion includes: a weight contact surface that constitutes a part of the weight receiving portion and is in contact with the weight member; and a space facing surface that is located on a face side of the weight contact surface and faces an empty space, and   the weight member is not exposed outside the golf club head.   
     
     
         16 . The golf club head according to  claim 15 , wherein the sole thin-wall portion extends continuously from a position located on a sole side of the weight member to the face portion. 
     
     
         17 . The golf club head according to  claim 15 , wherein an entirety of the sole thin-wall portion is included in an integrally-formed single-piece member. 
     
     
         18 . The golf club head according to  claim 15 , wherein
 when a top-sole directional length of the weight member is denoted by D 2 , and a top-sole directional height of the golf club head at a position of the face center is denoted by H 1 , then D 2 /H 1  is greater than or equal to 0.05 and less than or equal to 0.5.   
     
     
         19 . The golf club head according to  claim 15 , wherein
 when a sweet spot height is denoted by H 2 , and a top-sole directional height of the golf club head at a position of the face center is denoted by H 1 , then H 2 /H 1  is greater than or equal to 0.30 and less than or equal to 0.50.   
     
     
         20 . The golf club head according to  claim 15 , wherein
 when a depth of a center of gravity of the golf club head is denoted by D 4 , and a face-back directional thickness of the golf club head at a position of the face center is denoted by D 5 , then D 4 /D 5  is greater than or equal to 0.10 and less than or equal to 0.50.