Golf club head

Abstract

A golf club head has a three-piece construction, including a front piece, an intermediate piece and a rear piece. The front and rear pieces are made of metal, while the intermediate piece is made of fiber-reinforced plastic, composite material or metal. The intermediate piece is jointed to the front and rear pieces by means of adhesives or welding. Bolts are provided in a lower portion of the rear piece to threadingly engage the front piece to securely fix all the pieces together to form the golf club head, which has a lowered gravity center and enhanced striking stability.

1 . A golf club head comprising a front piece, an intermediate piece, and a rear piece, which are respectively shaped and are combined together to form the golf club head, wherein the front piece and the rear piece are made of metal, while the intermediate piece is made of a material selected from a group consisting of composite material, fiber-reinforced plastics, and metal, the front piece and the rear piece each having a jointing side jointed to the intermediate piece, each jointing side of the front and rear pieces forming a circumferential recess for fitting to opposite sides of the intermediate piece and fixing thereto by means of adhesives or welding, a lower portion of the front piece forming two internally-threaded fastening members on opposite side portions thereof, the rear piece forming through holes corresponding to the internally-threaded fastening members, whereby when the front, intermediate, and rear pieces are fixed together, bolts are further extended through the holes of the rear piece to engage the internally-threaded fastening members of the front piece. 
   
   
       2 . A golf club head comprising a left-side piece, an intermediate piece, and a right-side piece, which are respectively shaped and are combined together to form the golf club head, wherein the left-side piece and the right-side piece are made of metal, while the intermediate piece is made of a material selected from a group consisting of composite material, fiber-reinforced plastics, and metal, the left-side piece and the right-side piece each having a jointing side jointed to the intermediate piece, each jointing side of the front and rear pieces forming a circumferential recess for fitting to opposite sides of the intermediate piece and fixing thereto by means of adhesives or welding, a lower portion of the left-side piece forming two internally-threaded fastening members on opposite side portions thereof, the right-side piece forming through holes corresponding to the internally-threaded fastening members, whereby when the left-side, intermediate, and right-side pieces are fixed together to form a combined body, bolts are further extended through the holes of the rear piece to engage the internally-threaded fastening members of the front piece, a metal striking plate being further mounted to a front side of the combined body.