Golf club head and method for manufacturing the same
AssigneeDunlop Sports Co. Ltd.
InventorsSeiji Hayase, Masahide Onuki
Life of this patent
Estimating the term…
Abstract
A golf club head comprises a metal member made of at least one kind of metal material and a resin member made of a resin material welded to the metal member. A method for manufacturing the golf club head comprises a step of welding the resin member to the metal member.
Claims14
A method for manufacturing a golf club head having a hollow structure comprising a metal member made of a metal material and a resin member made of a resin material, said method comprising the steps of:
- making the metal member including a crown portion provided with an opening;
- making the resin member for closing the opening;
- fitting the resin member to the opening of the metal member so that the resin member and the metal member have mutually-contacting surfaces;
- heating the metal member by irradiating the contacting surface of the metal member with a laser beam through the resin material or irradiating a vicinity of the contacting surface of the metal member with a laser beam not through the resin material;
- melting the resin material of the resin member by the heated metal member;
- and
- welding the resin member to the metal member by cooling and hardening the molten resin material.
A method for manufacturing a golf club head, the golf club head having a hollow structure comprising a metal member made of a metal material and provided with an opening and a resin member made of a resin material and closing the opening, said method comprising:
- preparing the resin member having a thickness of no less than 0.3 mm and not more than 4.0 mm so that an edge surface of the resin member is inclined to the opening toward the inside from the outside of the club head or, alternatively, toward the outside from the inside of the club head;
- preparing the metal member so that an edge surface of the opening is inclined to fit with said inclined edge surface of the resin member;
- setting the resin member in the opening of the metal member so that the inclined edge surface of the resin member fits with the inclined edge surface of the opening;
- irradiating a vicinity of the inclined edge surface of the opening of the metal member with a laser beam so that the inclined edges surface of the opening is heated,
- melting the resin material adjacent to the inclined edge surface of the resin member by the heated inclined edge surface of the opening of the metal member, and
- welding the inclined edge surface of the resin member to the inclined edge surface of the opening of the metal member by cooling and hardening the molten resin material so as to form a weld joint therebetween.
Dependencies are inferred from the claim text.