Golf club

Abstract

A golf club 2 is provided with a head 4 , a shaft 6 , a grip body 8 a , and an extending member 8 b . The extending member 8 b is detachably mounted to a back end of the grip body 8 a . A length of a grip holding surface 8 m can be adjusted by mounting and dismounting the extending member 8 b . Preferably, the grip body 8 a has a hard base body h 1 . Preferably, the extending member 8 b has a hard connector h 2 . Preferably, the extending member 8 b can be mounted to the back end of the grip body 8 a by connecting the hard base body h 1 and the hard connector h 2 to each other. The number of the extending member 8 b may be 1 or equal to or greater than 2. Preferably, the extending members are detachably mounted to each other.

1 . A golf club comprising:
 a head;   a shaft;   a grip body; and   an extending member,   wherein the extending member is detachably mounted to a back end of the grip body; and a length of a holding surface of a grip can be adjusted by mounting and dismounting the extending member.   
     
     
         2 . The golf club according to  claim 1 , further comprising a hard base body, wherein the extending member has a hard connector; and the extending member can be mounted to the back end of the grip body by connecting the hard base body and the hard connector to each other. 
     
     
         3 . The golf club according to  claim 1 , wherein the extending member has a hard connector;
 the grip body has a cavity part having an undercut structure;   the cavity part is made of rubber;   the hard connector can be mounted to the cavity part by using elastic deformation of the rubber; and   due to the undercut structure, the hard connector can be less likely to come off the cavity part.   
     
     
         4 . The golf club according to  claim 2 , wherein the hard base body and the shaft are separated from each other; and rubber exists between the hard base body and the shaft. 
     
     
         5 . The golf club according to  claim 2 , wherein the hard base body and the hard connector are separated from each other with the extending member mounted to the grip body; and rubber exists between the hard base body and the hard connector. 
     
     
         6 . The golf club according to  claim 1 , wherein the golf club includes the plurality of extending members;
 the extending members are detachably mounted to each other; and   a length of the grip can be adjusted by connecting number of the extending members.   
     
     
         7 . The golf club according to  claim 6 , wherein the hard connectors are separated from each other with the extending members connected to each other; and
 rubber exists between the hard connectors.   
     
     
         8 . The golf club according to  claim 6 , wherein each of the plurality of extending members has a cavity part having an undercut structure;
 the cavity part is made of rubber;   the hard connector of the first extending member can be mounted to the cavity part of the second extending member by using elastic deformation of the rubber; and   due to the undercut structure, the second extending member can be less likely to come off the first extending member.   
     
     
         9 . The golf club according to  claim 1 , wherein the golf club includes the plurality of extending members having lengths different from each other; and
 a length of the grip can be adjusted by selection or combination of the extending members.   
     
     
         10 . The golf club according to  claim 2 , wherein the golf club includes the plurality of extending members, and wherein when a thickness of rubber existing between the hard base body and the shaft is defined as A 1  (mm); a thickness of rubber existing between the hard base body and the hard connector is defined as A 2  (mm); and a thickness of rubber existing between the adjacent hard connectors is defined as A 3  (mm), a total sum At of the thickness A 1 , the thickness A 2 , and the thickness A 3  is 1 mm or greater and 10 mm or less. 
     
     
         11 . The golf club according to  claim 4 , wherein when a thickness of the rubber existing between the hard base body and the shaft is defined as A 1  (mm), the thickness A 1  is 1 mm or greater and 5 mm or less. 
     
     
         12 . The golf club according to  claim 5 , wherein when a thickness of the rubber existing between the hard base body and the hard connector is defined as A 2  (mm), the thickness A 2  is 1 mm or greater and 5 mm or less. 
     
     
         13 . The golf club according to  claim 1 , wherein the golf club includes the plurality of extending members;
 the extending members are detachably mounted to each other;   a length of the grip can be adjusted by connecting number of the extending members;   each of the extending members has a hard connector; and   when a thickness of rubber existing between the adjacent hard connectors is defined as A 3  (mm), the thickness A 3  is 1 mm or greater and 5 mm or less.   
     
     
         14 . The golf club according to  claim 1 , wherein the grip body and the extending member can be connected to each other by screw connection. 
     
     
         15 . The golf club according to  claim 6 , wherein the extending members can be connected to each other by screw connection. 
     
     
         16 . The golf club according to  claim 2 , further comprising a connecting member, wherein the connecting member connects the hard base body and the hard connector to each other.