Sumitomo Rubber Industries Limited

Yuki Nagano

Masahiko Ueda

Naoyoshi Ueda

Satoru Hanamitsu

Kousuke Okazaki

Shimpei Oyama

Masahide Onuki

Naruhiro Mizutani

Takashi Nakamura

Daisuke Kohno

Yasushi Sugimoto

Hiroshi Abe

Tomoya Hirano

Masatoshi Kato

Yuto Nakamura

Kenji Kii

A head includes a body member that has an opening, and a face member that includes a striking face and closes the opening. The face member includes a face portion that forms the striking face, and a peripheral portion that extends from a peripheral edge of the face portion toward a back side. The peripheral portion of the face member is welded to the body member. A weld bead that juts from the inner surface of the head is formed at a boundary position between the peripheral portion and the body member. A wall thickness at a face-side end point of the weld bead is greater than a wall thickness at a body-side end point of the weld bead. The peripheral portion has a length of less than or equal to 6 mm.

Golf club head

In a head, a center vertical cross section passing through a face center satisfies the following (a) and (b): (a) when a boundary point between an inner surface of a crown portion and an inner surface of a face portion is defined as a CF inner surface boundary point, a curvature radius of a head inner surface at the CF inner surface boundary point is 6.0 mm or greater and 10.0 mm or less, and the head thickness at the CF inner surface boundary point is 2.0 mm or greater; and(b) when a spot located 10 mm apart from the CF inner surface boundary point toward the crown side is defined as a spot C, the head thickness reduces gradually from the CF inner surface boundary point to the spot C, and the head thickness at the spot Cis 1.0 mm or less.

Provided is a sensitive golf club with a sensor unit. The sensor unit includes a battery, a sensor module configured to measure sensor data indicating a state of the golf club using power from the battery, a communications unit configured to wirelessly transmit the sensor data to an external device using power from the battery, and a control unit configured to control operation of the sensor module and the communications unit using power from the battery. The sensor unit has an A mode, and a B mode in which operation of the communications unit is suppressed compared to the A mode. The control unit is configured to judge whether or not the golf club is prepared for a shot based on the sensor data, and switch between the A mode and B mode based on whether or not the golf club is prepared for a shot.

Golf club having sensor unit

A golf club set includes a plurality of golf clubshaving different loft angles. The golf clubsinclude at least one 1st golf clubA having a loft angle of less than 34 degrees, and at least one 2nd golf clubB having a loft angle of not less than 34 degrees. Each of the at least one 1st golf clubA and the at least one 2nd golf clubB comprises a clubfaceprovided with a plurality of face grooveshaving a depth. The depth of the face groovesof the at least one 2nd golf clubB is larger than the depth of the face groovesof the at least one 1st golf clubA.

Golf club set

A golf swing analysis apparatus for analyzing a swing action of a golf club is provided. The golf swing analysis apparatus comprises an acquisition unit configured to acquire a measurement value obtained by measuring the swing action using a measurement device; a grip behavior derivation unit configured to derive a behavior of a grip of the golf club that occurs during the swing action, based on the measurement value; and a shoulder behavior derivation unit configured to derive a behavior of a pseudo shoulder of a golfer that occurs during the swing action, based on the behavior of the grip.

Golf swing analysis apparatus and golf club fitting apparatus

Growing community of inventors

Kobe, Japan

Yuki Nagano