Take-away posture confirmation device

Abstract

The present invention provides a take-away posture confirmation device of a golf club for confirming the take-away posture, which includes a head, a shaft, and a grip, and a slit beam irradiation part, which irradiates a slit beam onto the head or a predetermined portion of the shaft at a predetermined angle, is arranged. If necessary, the slit beam irradiation part may be arranged on the shaft adjacent to the head. The slit beam irradiation part includes: a fixing part fixed to the shaft; and a laser generation part fixed by the fixing part to irradiate the slit beam, wherein the slit beam generated from the laser generation part is irradiated onto the ground surface on which a golf ball is placed to form a beam trajectory.

1 . A take-away posture confirmation device of a golf club for confirming the take-away posture, which includes a head, a shaft, and a grip, comprising:
 a slit beam irradiation part, which irradiates a slit beam onto the head or a predetermined portion of the shaft at a predetermined angle.   
     
     
         2 . The take-away posture confirmation device according to  claim 1 , wherein the slit beam irradiation part is arranged on the head or the predetermined portion of the shaft, and includes:
 a fixing part fixed to the shaft; and   a laser generation part fixed by the fixing part to irradiate the slit beam, and   wherein the slit beam generated from the laser generation part is irradiated onto the ground surface on which a golf ball is placed to form a beam trajectory.   
     
     
         3 . The take-away posture confirmation device according to  claim 2 , wherein the beam trajectory varies the location irradiated onto the ground surface depending on the position of the golf club during the take-away posture, and the beam trajectory is irradiated in the location where a user who takes the take-away posture can check. 
     
     
         4 . The take-away posture confirmation device according to  claim 3 , wherein the slit beam irradiation part is arranged on the head or the predetermined portion of the shaft, and the beam trajectory irradiated from the laser generation part onto the ground surface controls the irradiation angle of a laser to be irradiated to a location where the user can check during the take-away posture. 
     
     
         5 . The take-away posture confirmation device according to  claim 4 , wherein when viewed from the front, if the user using the golf club takes the take-away posture by moving the golf club to the left from the address posture, the position of the golf club is defined through the relative positions of the the head and the grip of the golf club in the take-away posture,
 wherein when viewed from the front of the user using the golf club, the positions are defined as position  11  where the head is arranged above the grip, position  12  where the head and the grip are arranged at the same height and the shaft of the golf club is parallel to the ground surface, and position  13  where the head is arranged below the grip,   wherein when viewed from the right of the user, the positions are defined as position  21  where the head is located left of the grip, position  22  where the head aligns with the grip, and position  23  where the head is located right of the grip, and   wherein the position that simultaneously satisfies both the position  12  and the position  22  is defined as a first normal position.   
     
     
         6 . The take-away posture confirmation device according to  claim 5 , wherein the front of the golf head is termed the “toe”, the back is termed the “heel”, a vertical line passing through the heel and perpendicular to the ground is called the “heel perpendicular line”, and in the state in which the golf club maintains the first normal position, when viewed from the right of the user, the position of the golf head is defined based on the angle at which the golf head is placed,
 wherein when defining the heel perpendicular line as 0 degrees, the leftward direction based on the heel perpendicular line as a negative (−) angle direction, and the rightward direction based on the heel perpendicular line as a positive (+) angle direction, the positions are defined as position  31  where the heel is located on the heel perpendicular line and the toe is arranged at the left of the heel perpendicular line between −45 degrees and less than 0 degrees, position  32  where the toe is arranged at the right of the heel perpendicular line between 0 degrees and less than 30 degrees, and position  33  where the toe is at the right of the Heel perpendicular line between 31 degrees and 90 degrees, 
 wherein when the position that simultaneously satisfies the position  12 , the position  22 , and the position  32  is defined as the normal position, the beam trajectory irradiated onto the ground surface at the normal position is called the normal irradiation trajectory, and 
 wherein when the beam trajectory irradiated at positions other than the normal position is termed an abnormal position trajectory, the normal position trajectory and the abnormal position trajectory are irradiated onto different areas of the ground surface respectively. 
 
     
     
         7 . The take-away posture confirmation device according to  claim 6 , wherein for a right-handed user taking the take-away posture, the upward direction is defined as a +z-axis direction, the downward direction as a −z-axis direction, the leftward direction (toward the target) as a +y-axis direction, the rightward direction as a −y-axis direction, the forward direction as a +x-axis direction, and the backward direction as a −x-axis direction, and
 wherein when the center of the normal irradiation trajectory is defined as the origin, the irradiation angle of laser is controlled such that the normal irradiation trajectory is parallel to the y-axis and laser is irradiated between the user's toes and the golf ball, and an irradiation range is controlled to exceed both sides of the golf ball, so the laser is irradiated at the position where the user can recognize the normal irradiation trajectory of the laser in the take-away posture. 
 
     
     
         8 . The take-away posture confirmation device according to  claim 7 , wherein when viewed from the right of the user in the state in which the golf club is positioned parallel to the y-axis, if the golf head is rotated in the counterclockwise direction, the beam trajectory is controlled to become a trajectory  31  which moves in the +x-axis direction to be parallel to the normal irradiation trajectory, and
 wherein when the golf head is rotated in the clockwise direction, the beam trajectory is controlled to become a trajectory  33  which moves in the −x-axis direction to be parallel to the normal irradiation trajectory, so that the user can confirm the trajectory  31  and the trajectory  33  during the take-away posture. 
 
     
     
         9 . The take-away posture confirmation device according to  claim 7 , wherein when the golf head is moved upward in the state in which the golf club is arranged parallel to the y-axis, the beam trajectory is controlled to become a trajectory  11  which moves in the −y-axis direction from the normal irradiation trajectory, and
 wherein when the golf head is moved downward, the beam trajectory is controlled to become a trajectory  13  which moves in the +y-axis direction from the normal irradiation trajectory so that the user can confirm the trajectory  21  and the trajectory  13  during the take-away posture.