JPH07116288A - Iron golf club set - Google Patents

Abstract

PURPOSE:To provide a golfer with a safe feel when addressing, to prevent excessively high trajectory and to improve the directional stability of ball hitting. CONSTITUTION:This iron golf club set has golf clubs selected in plural pieces from respective numbers having loft angles of 20 to 22 deg. with #1, 23 to 25 deg. with #2,26 to 28 deg. with #3, 29 to 31 deg. with #4, 32 to 34 deg. with #5, 35 to 37 deg. with #6, 38 to 40 deg. with #7, 41 to 43 deg. with #8, 44 to 46 deg. with $9. Shafts which have a flexing point nearer the hand and are provided with the most flexing part of the shaft 1 used for the respective numbers, i.e., bend point, near the hand are mounted to the respective clubs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron golf club set.

[0002]

2. Description of the Related Art A conventional iron golf club set is
Generally, it is composed of 9 to 10 pieces. For advanced players, add 1 iron (# 1), 2 iron (# 2), beginners choose a set called 5 to 7 half set Was there. # 1 is the club with the longest flight distance. Normally, the shaft length is shortened within the prescribed length range in order from the one with the longer flight distance, and the loft angle and lie angle are also varied between the clubs. It is designed to increase at a constant angle in order from the one with the longer distance.

The loft angle in the conventional general set example is shown in the following table.

[0004]

[Table 1]

[0005]

[Table 2]

[0006] Table 1 above is of a type called our professional model (our J's iron), and Table 2 is a model for average golfers (our Ray Grande RG-3).
belongs to. In recent iron clubs, not limited to these two examples, a power loft design that sets a loft angle and enables a large flight has become mainstream.

[0007]

In an iron club having a high loft angle, particularly with a long iron, it is easy to feel anxiety when holding it, and useless force is applied to easily cause a miss shot.

Therefore, an object of the present invention is to provide an iron golf club set which has a feeling of security when held, prevents the trajectory from becoming too high, and improves the directional stability of the hit ball.

[0009]

In order to achieve the above-mentioned object, the present invention has # 1 of 20 ° to 22 ° and # 2 of 23 °.
~ 25 °, # 3 is 26 ° -28 °, # 4 is 29 ° -31
°, # 5 is 32 ° to 34 °, # 6 is 35 ° to 37 °, #
7 is 38 ° to 40 °, # 8 is 41 ° to 43 °, # 9 is 4
It is an iron golf club set having a plurality of golf clubs selected from each count having a loft angle of 4 ° to 46 °, and a portion having the largest bending, that is, a bend point of a shaft used for each count is closer to the hand. It is equipped with the provided shaft.

[0010]

The loft angle is larger than that of the current mainstream power loft design set, so there is a sense of security when set up especially in clubs of # 5 or less. If the loft angle is large, the trajectory may be too high, but since the shaft is in hand condition, it prevents the trajectory from becoming too high,
It is possible to obtain an appropriate trajectory height. In addition, the directional stability of the hit ball is increased due to the sense of security when standing up and the size of the loft angle.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, the inclination angle α of the face surface 3 of the head 2 with respect to the axis of the shaft 1 is a loft angle, and this loft angle is 20 ° to 22 at the first iron (# 1).
23 ° to 25 ° with 2nd iron (# 2), 26 ° to 28 ° with 3rd iron (# 3), 4th iron (# 4)
29 ° to 31 ° at 5th iron (# 5) at 32 ° to 3 °
35 ° to 37 ° with 4 °, 6th iron (# 6), 38 ° to 40 ° with 7th iron (# 7), 8th iron (#
8) 41 ° ~ 43 °, 9 iron (# 9) 44 °
~ 46 °, pitching wedge (P / W) 47 ° ~ 5
0 °, 51 ° to 54 ° with pitching sand (P / S),
The sand wedge (S / W) was set to 55 ° to 59 °. Compared with the set shown in Table 1 of the conventional example, 5 ° to 7 ° for # 3, #
5 is 4 ° to 6 °, # 7 is 2 ° to 4 °, and the loft angle is large. A short iron (a club larger than # 8 or # 9 in size) may have a loft angle substantially the same as that of the conventional example.

It should be noted that the general loft, that is, the standard loft, was not a power loft (or a strong loft) design, but was 23 ° in # 3 and 27 ° in # 4. The loft angle also increased at a constant rate as it increased. In this invention, the loft angle is larger by about 1 ° to 3 ° than the standard loft. If you increase the loft angle with a long iron or middle iron, the average class golfer will not feel uneasy when holding it, and even if it is # 3, the loft angle is 5 ° to 7 ° compared to # 3 of the power loft design. It's bigger and you get the same sense of security as the # 5 power loft design.

If the loft angle becomes large, the trajectory will become too high, which may lead to a great decrease in flight distance. Therefore,
In the present invention, the shaft 1 having the bend point (kick point) of the shaft 1 closer to the hand is mounted. The shaft 1 where the portion closest to the head 2 is the best is called the toe, and the angle of deflection increases and the loft angle at impact increases, so the ball tends to rise. In addition, those with bend points in the middle that are neither at hand nor ahead are called mid-tone. It is said that it is suitable for power hitters because the grip is the closest to the grip, so it is difficult for people with slow head speeds to climb the ball. The bend points of the tone at the hand, the tone at the middle tone, and the tone at the tip of the tone are within 4 to 5 cm. In the set of the present invention, in the shaft # 3, the bend point was set at a position of about 45% from the tip. The position of the conventional # 3 shaft is about 40 to 43%. If you just meet the ball at # 3 with a loft angle of 24 ° with the shaft 1 at your fingertips (head speed 4
0m / sec.), A flight distance of around 180 yards was obtained, and a run was also possible with an appropriate trajectory height. At # 3 with a shaft with a tongue and a loft angle of 21 °, the loft is standing up, causing anxiety when holding it, and the probability of just meeting is reduced. Further, even if the conventional meet # 3 is used, the flight distance is only increased by about 7 to 9 yards.
When the loft is sleeping, there is a sense of security when it is set up. As a result, if the probability of just meat increases, the average flight distance will increase, and the directional stability of the hit ball will increase.

By enlarging the head 2 and lengthening the shaft 1 in the hand condition, it is possible to obtain a flight distance (at the time of just meet) equivalent to that of the power loft design even if the loft angle is increased. If the shaft 1 is made of carbon, the length and the weight are not in proportion to each other. Therefore, if the shaft 1 having the same weight is used, the head speed is increased and the flight distance is increased. A typical # 3 shaft length is 38-38.
Since it is 5 inches, the head 2 may be made larger, the shaft 1 of # 3 may be about 39.5 inches, and the shaft length may be shortened as the count increases at the same rate as in the conventional case. By the way, if # 3 has a shaft length of 38 inches (965 mm), # 4 has 952 mm and # 5 has 94 mm.
0mm, 927mm for # 6, 914mm for # 7, 902 for # 8
mm, # 9 is 889 mm, P / W and P / S and S / W are all 876 mm. If # 3 is lengthened by 1 inch (2.54 cm), # 8 or # 9 is longer than the above length. Make each one inch longer.

An example of a set of 10 iron clubs from # 3 to P / W, P / S, S / W is shown below. # 3 (Shaft length 978 mm) 27 ° (Loft angle) # 4 (Id. 965 mm) 30 ° # 5 (Id. 953 mm) 33 ° # 6 (Id. 940 mm) 36 ° # 7 (Id. 927 mm) 39 ° # 8 (Same as 915mm) 42 ° # 9 (Same as 903mm) 45 ° P / W (Same as 885mm) 48 ° P / S (Same as 880mm) 53 ° S / W (Same as 880mm) 57 ° Mounted shaft 1 is all in good condition.

The loft angle is proportional to the barycentric angle, and the larger the barycentric angle, the more difficult it is to slice to the right.
Here, the center-of-gravity angle means a tilt angle with respect to a vertical line at this time when the club is kept horizontal and the balance is maintained with the face being slightly upward when the head is drooped. The # 3 center of gravity angle of the present invention has a large loft angle, so
It becomes larger than the center of gravity angle of 3, making it difficult to slice,
It will be easy for an average golfer to hit.
In addition, since the long iron can have a large center of gravity angle by making it a gooseneck, it is preferable that the long iron of the present invention also has a gooseneck.

At least # 3 to # in the above set of 10
The one with 6 gooseneck is more comfortable because the loft angle is sleeping more than the normal one when holding the long iron, and the gooseneck and the loft angle have a large center of gravity angle, It became difficult to slice into slices, and the shaft was in good condition, so the trajectory did not become too high. In addition, the probability of just meeting is increased, and the directional stability of the hit ball is also improved.

[0019]

As described above, according to the present invention, since the shaft has a hand condition, and the loft angle is slanted more than that of a normal shaft, it is uneasy when an average class golfer holds it. Even if the loft angle is large, the shaft is in good condition even if the loft angle is large, so the trajectory is not too high and the flight distance does not drop extremely.
If the loft angle is large, the center of gravity angle is also large, and it becomes difficult to slice to the right. As a whole, if this iron golf club set is used, the golfer can hold and swing with peace of mind, and the directional stability of the hit ball is improved.

[Brief description of drawings]

FIG. 1 is a side view seen from a toe side showing an embodiment of the present invention.

[Explanation of symbols]

 1 shaft 2 head 3 face surface

Claims (1)

[Claims] 1. An iron golf club set having a plurality of golf clubs selected from each count having the following loft angles, in which a portion of the shaft used for each count having the largest bending, that is, a bend point is brought closer to the hand. An iron golf club set, which is equipped with a shaft in good condition provided on the. # 1 20 ° -22 ° # 2 23 ° -25 ° # 3 26 ° -28 ° # 4 29 ° -31 ° # 5 32 ° -34 ° # 6 35 ° -37 ° # 7 38 ° -40 ° # 8 41 ° ~ 43 ° # 9 44 ° ~ 46 °