Patent ID: 7291073
Filing Date: 2007-11-06
Classification: A63B

Abstract:
1. A golf club head having a variable loft angle, connected to a shaft of a golf club, the golf club head comprising: a head portion having a head body for striking a golf ball and a head heel extending upwardly from one side of the head body and bent at a given angle; and a fastening portion extending to the shaft and having a rotary assembly rotating with respect to the head portion and a fixing assembly for fixing the head portion to a position at which a given loft angle is selected, wherein the head heel comprises: a guide recess extended to left and right directions from a central portion of an end portion thereof; a pair of head heel pieces formed by placing the guide recess there-between; the head heel pieces having a pair of inner gears along an inner peripheral surfaces thereof and a pair of rotary holes formed on the pair of head heel pieces to communicate with the guide recess, one of the pair of rotary holes opened to the outside and the other having a given diameter of shaft hole formed on the bottom surface thereof, and the fastening portion comprises: a rotary body formed of a hollow cylindrical body and provided with an insertion recess formed at the side portion thereof, a pair of outer gear pieces formed at the both sides of the insertion recess to be engaged with the inner gears, and a first through hole formed in a length direction thereof to be passed through the both end portions thereof, each of the inner gears having a height higher than the first through hole; a fastening bar having a second through hole formed to correspond with the first through hole at one end portion thereof, the second through hole fittably inserted into the insertion recess of the rotary body, and having a male screw portion formed at the other end portion thereof; a hollow fastening tube disposed around the outer periphery of the fastening bar, the hollow fastening tube having a given length where the male screw portion of the fastening bar is exposed; and an adjusting tube having a female screw coupled to the male screw portion formed on the inner periphery thereof, the adjusting tube disposed on the outer periphery of the fastening bar, located to be adjacent to the hollow fastening tube, and connected to the shaft of the golf club, whereby the head portion and the fastening portion are rotated with respect to each other by means of a shaft pin that is passed through the shaft hole, the first through hole and the second through hole.