Patent ID: 8398502

Claim:
A hitting position detecting device comprising: a golf club which includes a shaft having a grip portion and a head portion having a face portion with a hitting surface and a rear surface and attached to the front end of the shaft; at least three vibration wave sensors which are arranged on the side of the rear surface of the face portion and fixed to the head portion so as to output electrical signals in accordance with a vibration wave generated upon hitting of the face portion; a calculation unit which detects arrival times in the vibration wave sensors of the vibration wave generated in the face portion upon hitting of a ball on the basis of the electrical signals, calculates a hitting position of the ball in the face portion on the basis of a difference in the plurality of arrival times, and then outputs the result as a hitting position signal; a display unit which displays the hitting position in the face portion on the basis of the hitting position signal output from the calculation unit; and a power source which supplies power to the vibration wave sensors, the calculation unit, and the display unit; wherein the calculation unit detects a difference in arrival by setting two vibration, wave sensors as a pair, and calculates the hitting position on the basis of the difference in arrival time obtained by at least two pairs of vibration wave sensors.