Golf club and grip for golf club
View Patent ↗A golf club ( 2 ) according to the present invention includes a head ( 4 ), a shaft ( 6 ) and a grip ( 8 ). A maximum thickness portion of the grip ( 8 ) is present within a range of 3 to 8 mm from a butt end. When the closest position to a tip side in the maximum thickness portion is set to be a reference position (K), a position placed apart from the reference position (K) toward the tip side by 20 mm is set to be a position (A), a position placed apart from the reference position (K) toward the tip side by 30 mm is set to be a position (B), a position placed apart from the reference position (K) toward the tip side by 50 mm is set to be a position (C), and a position placed apart from the reference position (K) toward the tip side by 200 mm is set to be a position (D), a taper ratio (T 1 ) between the reference position (K) and the position (A) is equal to or higher than 0.255 and is equal to or lower than 0.270, a taper ratio (T 2 ) between the position (B) and the position (C) is equal to or higher than 0.045 and is equal to or lower than 0.060, and a taper ratio (T 3 ) between the position (C) and the position (D) is equal to or higher than 0.015 and is equal to or lower than 0.035.
1. A golf club comprising a head, a shaft and a grip,
wherein a maximum thickness portion of the grip is present within a range of 3 to 8 mm from a butt end, and
when the closest position to a tip side in the maximum thickness portion is set to be a reference position K,
a position placed apart from the reference position K toward the tip side by 20 mm is set to be a position A,
a position placed apart from the reference position K toward the tip side by 30 mm is set to be a position B,
a position placed apart from the reference position K toward the tip side by 50 mm is set to be a position C, and
a position placed apart from the reference position K toward the tip side by 200 mm is set to be a position D,
a taper ratio T 1 between the reference position K and the position A is equal to or higher than 0.255 and is equal to or lower than 0.270,
a taper ratio T 2 between the position B and the position C is equal to or higher than 0.045 and is equal to or lower than 0.060, and
a taper ratio T 3 between the position C and the position D is equal to or higher than 0.015 and is equal to or lower than 0.035; and wherein
the grip thickness (mm) in the reference position K is represented by k 1 , the grip thickness (mm) in the reference position A is represented by a 1 , the grip thickness (mm) in the reference position B is represented by b 1 , the grip thickness (mm) in the reference position C is represented by c 1 , and the grip thickness (mm) in the reference position D is represented by d 1 , such that:
T 1=( k 1− a 1)/20,
T 2=( b 1− c 1)/20, and
T 3=( c 1− d 1)/150.
2. The golf club according to claim 1 , wherein the following relational expression is established:
k1>a1>b1>c1>d1
3. The golf club according to claim 2 , wherein the grip thickness k 1 is equal to or greater than 27 mm and is equal to or smaller than 32 mm,
the grip thickness a 1 is equal to or greater than 22 mm and is equal to or smaller than 27 mm,
the grip thickness b 1 is equal to or greater than 21 mm and is equal to or smaller than 26 mm,
the grip thickness c 1 is equal to or greater than 20 mm and is equal to or smaller than 25 mm, and
the grip thickness d 1 is equal to or greater than 16 mm and is equal to or smaller than 22 mm.
4. The golf club according to claim 1 , wherein a taper ratio T 4 between the position A and the position B is equal to or lower than the taper ratio T 1 and is equal to or higher than the taper ratio T 2 and wherein T 4 =(a 1 −b 1 )/10.
5. The golf club according to claim 4 , wherein the taper ratio T 4 is lower than the taper ratio T 1 and is higher than the taper ratio T 2 .
6. The golf club according to claim 1 , wherein [T 1 /T 2 ] is equal to or higher than 4.25 and is equal to or lower than 6.00.
7. The golf club according to claim 1 , wherein [T 1 /T 3 ] is equal to or higher than 7.30 and is equal to or lower than 18.00.
8. The golf club according to claim 1 , wherein [T 2 /T 3 ] is equal to or higher than 1.30 and is equal to or lower than 4.00.
9. The golf club according to claim 1 , wherein a JIS-A hardness of the grip is equal to or greater than 30 and is equal to or smaller than 70.
10. A grip for a golf club wherein a maximum thickness portion of the grip is present within a range of 3 to 8 mm from a butt end, and
when the closest position to a tip side in the maximum thickness portion is set to be a reference position K,
a position placed apart from the reference position K toward the tip side by 20 mm is set to be a position A,
a position placed apart from the reference position K toward the tip side by 30 mm is set to be a position B,
a position placed apart from the reference position K toward the tip side by 50 mm is set to be a position C, and
a position placed apart from the reference position K toward the tip side by 200 mm is set to be a position D,
a taper ratio T 1 between the reference position K and the position A is equal to or higher than 0.255 and is equal to or lower than 0.270,
a taper ratio T 2 between the position B and the position C is equal to or higher than 0.045 and is equal to or lower than 0.060, and
a taper ratio T 3 between the position C and the position D is equal to or higher than 0.015 and is equal to or lower than 0.035, and wherein the grip thickness (mm) in the reference position K is represented by k 1 , the grip thickness (mm) in the reference position A is represented by a 1 , the grip thickness (mm) in the reference position B is represented by b 1 , the grip thickness (mm) in the reference position C is represented by c 1 , the grip thickness (mm) in the reference position D is represented by d 1 , such that:
T 1=( k 1− a 1)/20,
T 2=( b 1− c 1)/20, and
T 3=( c 1− d 1)/150.