Kendama

Abstract

This disclosure provides a kendama not only replacing only a kensaki if the kensaki is worn, but also adjusting a balance of weight and others of a sword and developing a novel technique largely different from existing techniques. A kendama includes a sword having a sword shaft and a cross-piece; a ball having a hole of inserting a kensaki protruding to an upper side than the cross-piece in the sword shaft; and a string connecting the sword and the ball. A tip portion of the kensaki is configured as an attachable and detachable member which is attachable and detachable with respect detachable members replaced each other.

1 . A kendama comprising:
 a sword having a sword shaft and a cross-piece;   a ball having a hole of inserting a kensaki protruding to an upper side than the cross-piece in the sword shaft; and   a string connecting the sword and the ball, wherein   a tip portion of the kensaki is configured as an attachable and detachable member which is attachable and detachable with respect to a base end of the kensaki, the attachable and detachable member is a plurality of attachable and detachable members replaced each other.   
     
     
         2 . The kendama according to  claim 1 , wherein at least two attachable and detachable members out of the plurality of attachable and detachable members differ in at least any one item or more items out of a weight, shape, and color. 
     
     
         3 . The kendama according to  claim 1 , wherein at least one attachable and detachable member is of configuring a shape of the tip portion of the kensaki as a hemisphere or circular cone. 
     
     
         4 . The kendama according to  claim 1 , wherein at least one attachable and detachable member is of configuring a shape of the tip portion of the kensaki as a circular truncated cone. 
     
     
         5 . The kendama according to  claim 1 , wherein at least one attachable and detachable member is of providing a slit groove catching the string with the tip portion of the kensaki. 
     
     
         6 . The kendama according to  claim 1 , wherein at least one attachable and detachable member is of providing a string hole connecting the string to the tip portion of the kensaki. 
     
     
         7 . The kendama according to  claim 1 , wherein at least one attachable and detachable member is of connecting a kensaki of another kendama to the tip portion of the kensaki. 
     
     
         8 . The kendama according to  claim 1 , wherein at least one attachable and detachable member is of attaching a small camera to the tip portion of the kensaki. 
     
     
         9 . The kendama according to  claim 1 , wherein a fitting and inserting hole is provided on a tip end plane of the base end of the kensaki, the attachable and detachable member has a shaft portion to be inserted and fitted to the fitting and inserting hole. 
     
     
         10 . The kendama according to  claim 9 , wherein a retaining portion is provided on the shaft portion, the retaining portion is configured by annularly providing an elastic protrusion along an outer peripheral face of the shaft portion. 
     
     
         11 . The kendama according to  claim 1 , wherein a shaft portion is provided on a tip end plane of the base end of the kensaki, the attachable and detachable member is provided with as fitting and inserting hole to insert and it the shaft portion. 
     
     
         12 . The kendama according to  claim 11 , wherein a thread groove is provided on an inner peripheral face of the fitting and inserting hole of the attachable and detachable member, the thread groove threadably mounts an outer peripheral face of the shaft portion on the base end of the kensaki. 
     
     
         13 . The kendama according to  claim 9 , a weight member is contained in the fitting and inserting hole to adjust a weight of the kensaki. 
     
     
         14 . The kendama according to  claim 11 , a weight member is contained in the fitting and inserting hole to adjust a weight of the kensaki.