Golf club and method for adjusting characteristics of the same

Abstract

A golf club includes: a shaft; a head; and a shaft case, and a hosel column wherein: a threaded ring including a plurality of threads provided on an inner periphery of an inner hole of the threaded ring is provided on an upper side of a dividing member, the threads extending in an axis center direction of the inner hole; the shaft case includes a convex axis member provided at a top end of the shaft case; the convex axis member is inserted in the inner hole of the threaded ring, and any one of corner edges of the convex axis member and the convex threads connect with the threads of the threaded ring; and a bolt that is inserted into a bolt insertion hole provided to the dividing member from a sole side of the head is screwed into the shaft case.

Description

BACKGROUND[0001]1. Field of the Invention[0002]The present invention relates to golf clubs, and in particular, relates to a golf club of which characteristics such as a lie angle, a slice angle, and a progression can be easily adjusted. In addition, the present invention relates to methods for adjusting the characteristics of the golf club.[0003]2. Description of the Related Art[0004]A golf club includes a shaft, and a head attached to a top end portion of the shaft. A grip is attached to a base end portion of the shaft.[0005]A conventional general golf club head includes a hosel hole that is directly provided to the head, and a shaft is inserted into and bonded to the hosel hole with an adhesive agent. An epoxide-based adhesive agent is generally used for the adhesive agent. In making a shaft change, the hosel portion is heated to destroy the structure made from the cured epoxy resin, and thereby the shaft can be pulled out of the hosel hole.[0006]The conventional general golf club...

AI Technical Summary

Benefits of technology

The present invention provides a golf club that allows for easy shaft changes and adjustable characteristics such as lie angle, slice angle, and progression. This golf club is also lower in production cost than previous designs. Additionally, the use of a threaded ring with different depths allows for the adjustment of the shaft case insertion depth, which in turn adjusts the overall length of the golf club. The present invention also includes a method for adjusting the characteristics of the golf club by replacing the previously-used shaft case-shaft connected body with a new shaft case-shaft connected body attached to the hosel of the head.

Problems solved by technology

The conventional general golf club head having this configuration has a lot of trouble in making a shaft change.

In addition, characteristics such as a lie angle, a slice angle, and a progression of the golf club head cannot be adjusted.

In the golf club of JP-A-2012-165864 described above, because the spacer that includes the pyramid-shaped hole is used in order to prevent rotation of the shaft case, highly precision processing is required, which causes an increase in cost.

In the golf club of JP-A-2006-42951, because the inner periphery in the deepest recess of the inner hole of the hosel hole is processed so as to have a regular hexagonal shape, highly precision processing is required, which causes an increase in cost.

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