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Golf clubs

A technology of golf clubs and clubs, which is applied to golf balls, golf clubs, rackets, etc., can solve the problems of not being able to accelerate the speed of the ball and the speed of the club head, and achieve increased kinetic energy, increased kinetic energy, The effect of speeding up the ball

Inactive Publication Date: 2015-10-28
DUNLOP SPORTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, golfers who lack strength cannot fully flex the shaft when swinging, and cannot increase the club head speed when hitting the ball.
As a result, there is a problem of not being able to speed up the ball

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] Hereinafter, embodiments of the golf club of the present invention will be described in detail with reference to the drawings.

[0046] figure 1 It is an explanatory diagram showing the whole of the golf club 1 according to one embodiment of the present invention. The golf club 1 of the present embodiment includes a wood-type golf club head 2 having a predetermined lie angle, a shaft 3 and a grip 4 . The head 2 includes a head pin 6 having a shaft hole 5 for fastening the tip 3 a of the front end of the shaft 3 . The butt end 3 b on the rear end side of the shaft 3 is inserted into the butt hole 7 of the grip 4 to be fastened. The tip 3 a is located inside the head 2 , and the butt end 3 b is located inside the grip 4 . In addition, in figure 1 , the symbol G indicates the center of gravity of the shaft 3 . The center of gravity G is located on the inner shaft axis of the shaft 3 .

[0047] In the present invention, the weight of the golf club 1 is set at 265 g or...

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PUM

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Abstract

Provided is a golf club having a head disposed at a front end of a shaft and a grip disposed at a back end of the shaft. A club weight is not larger than 265 g, and a ratio (head weight / club weight) of a head weight to a club weight is not lower than 0.67 but not higher than 0.75. When a distance from the front end of the shaft to a center of gravity of the shaft is LG and when a full length of the shaft is LS, 0.52≰LG / LS≰0.65 is satisfied, and when a frequency of flexural vibration of the club is F, 180 cpm≰F≰210 cpm is satisfied.

Description

technical field [0001] The present invention relates to a golf club. Background technique [0002] For golfers, the flight distance of the ball is an important factor when choosing golf clubs. Therefore, in order to prolong the flight distance of the ball, various methods have been conceived for the materials and shapes of the elements constituting the golf club. [0003] For example, since a club with a heavy head weight increases the kinetic energy imparted to the ball at the time of impact, the ball can be accelerated, resulting in a greater flight distance. Therefore, a method of increasing the weight of the head by increasing the ratio of the weight of the head to the total weight of the golf club has been proposed (for example, refer to Patent Document 1). [0004] Patent Document 1: Japanese Patent Laid-Open No. 2004-201911 [0005] Although the kinetic energy given to the ball can be increased by increasing the weight of the club head, on the other hand, when only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63B53/00A63B53/04A63B60/02A63B102/32
CPCA63B53/00A63B53/04A63B53/0466A63B53/14A63B59/0074A63B60/42A63B2053/0408A63B2059/0003A63B2060/002A63B2209/02A63B2209/023A63B53/0408A63B60/002A63B60/00
Inventor 中村崇长谷川宏中野贵次
Owner DUNLOP SPORTS CO LTD