Golf club

Abstract

There is provided a golf club including a head and a shaft detachably attached to the head, and having excellent reliability. This golf club includes a head, a shaft, a sleeve, and a screw. The sleeve is fixed to a tip part of the shaft. A head has a head body and an engaging member. The engaging member is fixed to the head body. Rotation of the sleeve to the head is regulated based on engagement between the sleeve and the engaging member. Withdrawal of the sleeve from the head is regulated based on connection between the sleeve and the screw. The screw is a multiple-thread screw.

1 . A golf club comprising: a head; a shaft; a sleeve; and a screw,
 wherein the sleeve is fixed to a tip part of the shaft;   the head has a head body and an engaging member;   the engaging member is fixed to the head body;   rotation of the sleeve to the head is regulated based on engagement between the sleeve and the engaging member;   the sleeve has a sleeve screw part;   withdrawal of the sleeve from the head is regulated based on connection between the sleeve screw part and the screw;   a connected state where the screw is connected to the sleeve and a disconnected state where the screw is removed from the sleeve can be mutually shifted; and   the screw is a multiple-thread screw.   
     
     
         2 . The golf club according to  claim 1 , wherein the multiple-thread screw is a double-thread screw. 
     
     
         3 . The golf club according to  claim 1 , wherein the head body has a screw part A for connecting the engaging member;
 the engaging member has a screw part B; and   the screw part A is connected to the screw part B.   
     
     
         4 . The golf club according to  claim 1 , further comprising an intermediate member,
 wherein the intermediate member has a screw part which can be connected to the screw; and   the screw part of the intermediate member is a multiple-thread screw.   
     
     
         5 . The golf club according to  claim 1 ,
 wherein the screw has a first screw part, and a second screw part having an outer diameter greater than the first screw part;   the head body has a body screw part;   in the connected state, the first screw part is connected to the sleeve screw part, and the second screw part is connected to the body screw part;   the first screw part and the second screw part are multiple-thread screws; and   the sleeve screw part and the body screw part are multiple-thread screws.   
     
     
         6 . The golf club according to  claim 5 , wherein the head body connected to the second screw part is elastically deformed by an axial force of the screw. 
     
     
         7 . The golf club according to  claim 4 , wherein a material of the intermediate member is different from a material of the head body. 
     
     
         8 . The golf club according to  claim 7 , wherein a Young's modulus of the intermediate member is lower than a Young's modulus of the head body.