JP2003126308A - Shape of golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club provided with a face, hardly causing erroneous shots. SOLUTION: The faces of heads having small loft angles are combined with each other with the face of a head having a large loft angle as a base to form a synthetic face composed of two different loft angles. For example, a pitching wedge is selected as a base, the loft angle of this pitching wedge and the loft angle of a No.3 wood are combined, and a synthetic face having two different loft angles is formed on the head of the No.3 wood.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the shape of a golf club head.

[0002]

2. Description of the Related Art Golf is a sport in which 18 balls are hit by a club to compete for the maximum number of hits until a hole is in. Up to 15 clubs are used during play, and duplication is not permitted. The club has a wide variety of woods and irons that are designed in terms of materials, dimensions, weight, hardness, structure, angle, etc., so that the grip, shaft, and head that make up the club can be adapted to the environment of each hole and the skill of the player. Is provided.

For the club, wood is suitable for obtaining a flight distance, and iron is suitable for placing importance on accuracy rather than flight distance. For this purpose, wood clubs 1 to 5 and iron clubs 1 to 9 are often used for tee and fairways. Also, pitching wedges are used for approaching from around the green, sand wedges for deep bunker, and putters for green.

Comparing wood and iron clubs, the former is different in appearance because the shaft is long, the loft angle is small, and the head is large. The number between counts is long and the loft angle is small. For example, the length is 45 of the 1st wood
From about 13 inches to about 36 inches of 9 iron, at the loft angle is from 11 ° of 1st wood to 4 of 9 iron.
There is a difference of around 3 °.

A wide range of players, from beginners to professionals, demand a club that is easy to handle and has good directionality and flight distance. There are various changes in club materials and structures to meet the demand. For example, the number of products that use materials other than steel, such as carbon fiber, for wood shafts has increased, and heads have begun to use various materials that replace wood-based materials. As for iron shafts, products made of materials other than metal in addition to steel have increased.

[0006]

Amateur players have a wide range of skill differences, and even with the same club, there are great differences in the height, flight distance, and directionality of the hit ball. The cause arises from the difference in skill whether or not it is possible to accurately catch the ball at the sweet spot on the face of the club head. That is,
By player, the beginner level is high, and by club, both wood and iron are small numbers, and the probability of failure increases.

[0007] Inappropriate swings are out of the question, and even if the swing is close to the proper swing, if the sweet spot is removed by only a few millimeters, the result is not desirable. Regarding the relationship between the head and the ball during play, the ball that floats from the surface with turf or fairway turf easily hits the top surface of both the wood and iron, and the ball that touches the surface of the ground or sinks into the turf or turf If there is no technique for hitting, the lower surface of the head will hit, which will lead to a miss shot.

Swing with few miss shots is a challenge for the player. The inventor who suffered from the problem said that the reason why the short club has less miss shots than the long club is that the ease of taking the ball into the face is related to the size of the loft angle (the angle formed by the vertical plane and the face). Reached the conclusion. Based on these conclusions, I have come to think that the shape useful for preventing miss shots is a composite face with two loft angles.

[0009]

SUMMARY OF THE INVENTION The present invention is a golf club composed of wood and iron, in which a head face having a large loft angle is combined with a head face having a small loft angle, It is the shape of a golf club head in which a synthetic face having two loft angles is formed on the head.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is characterized in that a wood or iron having a small loft angle is combined with an iron having a large loft angle to form a head having a composite face of two loft angles. That is, since the loft angle of the synthetic face is large in the lower part and small in the upper part, the appearance of the face is such that the lower side is slightly overhanging and the jaw is protruding. The shape scoops up a sphere captured below the face and facilitates movement above the face.

With respect to the connection shape of faces having different loft angles, a head and a sphere holding a required loft angle are placed on the same plane, and the sphere is faced to the center in the width direction of the head.
The two are brought close to each other, and the first contact point between the face and the sphere is set as each face end, and the face ends are connected by a continuous surface. Therefore, the loft angle of the composite face is large in the lower part and small in the upper part.

A club having a significantly large loft angle has both pitching and sand wedges, but short irons 7 to 9 may be added. However, as the count becomes smaller, the face stands on a flat surface and the effect of the composite face is weakened. Therefore, the loft angle as the base is selected from the clubs in the range of 35 to 60 °. If you choose a pitching wedge, your opponent becomes a higher club than the pitching wedge.

A combination in which two loft angles are close to each other has a small effect. For the 1-5 wood, the 1-3 long irons and the 4-6 middle irons, it is effective to select and combine the weak clubs. This combination is useful for hammering the surface of the ground and grass when hitting a ball sinking in a dent or grass with an iron with a protrusion, and also for sweeping away the grass interposed between the wood face and the ball .

[0014]

The club with a synthetic face of the present invention prevents miss shots by moving the ball on the face even if the catch position shifts downward with respect to the sweet spot during a swing. That is, top miss shots are prevented.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 (A, B, C) is a side view in which heads of a pitching wedge, a No. 3 wood and an No. 3 iron are placed on a flat surface while maintaining a loft angle and brought into contact with a ball on the same plane. . FIG. 2A and FIG. 2B are side views of the heads of the No. 3 wood and the No. 3 iron caught at the sweet spots. 3A and 3B are side views of a head having a combined face obtained by adding FIG. 1 to FIG. FIG. 4 is a partially enlarged view of the synthetic face.

FIG. 1A shows a pitching wedge, which is provided with a face 2 having a head 1 and a loft angle of 46 °, and a contact point 4 with a sphere 17 on a plane is at a distance a from the lower end of the face. When the head is driven into the lower surface of the sphere, the gradual inclination of the face is fortunate, and it is easy to catch the sphere at the sweet spot 3.
In FIG. 1 (B, C), the heads 5 and 9 of the 3rd wood and the 3rd iron are shown, and the contact points with the sphere on the plane are shown as 8 and 12.

FIG. 2A and FIG. 2B show a state in which a ball 17 floating on a tee or turf is caught by sweet spots 7 and 11 of faces 6 and 10 of heads 5 and 9 of 3rd wood and 3rd iron. . In this state, the best hit ball can be obtained, but if the ball catching point deviates even slightly, the shot becomes unstable, leading to a miss shot. The present invention has been accomplished by the following means for the purpose of correcting the deviation of the catching point and preventing the occurrence of miss shots.

FIG. 3 (A, B) is a composite diagram of FIG. 1 and FIG.
The loft angles α (β <α, γ <α) of face 2 of the pitching wedge were combined with faces 6 and 10 of loft angles β and γ of wood # 3 and iron. The combined faces 13 and 15 formed by the loft angles α and β and α and γ are formed on the head on the smaller loft angle side. The arrow indicates the flight direction after moving to the sweet spot of sphere 17.

FIG. 4 is an enlarged view of a composite face with two loft angles α and β (γ). The loft angle is maintained and the heads 1, 5 (9) and the ball 17 are arranged on the same plane. The first contact points 4, 8 (12) between the face and the ball that can bring the ball closer to the center of the head in the width direction correspond to the face end. The face ends are connected by an arc corresponding to the outer diameter of the sphere. That is, the distance a is the loft angle α, the distance c is the same as β (γ), and the distance b is the arc.

As for the cross section of the composite face, the larger the loft angle α, the more jaw-like protrusions 14 and 16 are formed at the lower end of the face. Place the sweet spot on the face side with a small loft angle. When swinging, the ball 17 is easily scooped by the projecting portion of the face, and the gentle inclination of the face assists the movement toward the sweet spot. As a result, when a ball is caught below the sweet spot, the risk of miss shots is greatly reduced.

The protrusions 14 and 16 at the lower end of the club, which are characteristic of the synthetic faces 13 and 15, are effective in removing the grass that is blocked between the ball and the face in the wood, and the ball placed on the bare ground in the iron. When hitting a ball, a dent, a ball sunk in grass, or the like, the protruding portion at the tip is easier to scrape off the lower surface on which the ball 17 is placed, as compared with a normal club, and has the effect of facilitating driving.

In this example, based on the pitching wedge (loft angle α = 46 °), the third wood (loft angle γ
= 16 °) and a third iron (loft angle β = 20 °) have been described. A club with a large loft angle is desirable for the base, but it may be extended to a short iron. Opponent clubs are base clubs and upper clubs excluding the following clubs. The above loft angles are reference values.

[0023]

The golf club using the synthetic face of the present invention has the following effects. Among woods and irons, it contributed to improving score making by reducing miss shots for players who are not good at clubs with long and small loft angles. Made the wood club in Fairey easy to use. Made the iron club in Fairey easy to use and drive. You can easily swing out from a cross bunker and easily obtain a ball line with a high trajectory.

[Brief description of drawings]

[FIG. 1] (A, B, C) are side views of a head in which a pitching wedge, a No. 3 wood and a No. 3 iron head are placed on a flat surface while maintaining a loft angle, and contacted with a ball on the same plane at the center of the head. Is.

FIGS. 2A and 2B are side views of heads caught at a sweet spot of each face of No. 3 wood and No. 3 iron.

FIG. 3A is a pitching wedge and a No. 3 wood.
(B) is a side view of a head with a synthetic face formed at a loft angle of a pitching wedge and a # 3 iron.

FIG. 4 is a partially enlarged view of a synthetic face.

[Explanation of symbols]

1,5,9 head 2,6,10 face 3,7,11 Sweet Spot 4,8,12 contact points 13,15 synthetic face 14,16 Projection 17 spheres

Claims (3)

[Claims] 1. A face (2) of a head (1) having a large loft angle in a golf club composed of wood and iron.
Head with small loft angle (5, 9)
Faces (6, 10) are combined, and a synthetic face (1
3, 15) The shape of the golf club head in which the above is formed. 2. A synthetic face (13, 15) having two loft angles, a head (1, 1) placed at the loft angle.
5, 9) and the sphere (17) were placed on the same plane, and they were brought into contact with each other, and the first contact point between the sphere and each face (2, 6, 10) was used as a reference, and the contact points were connected by a continuous surface. The shape of the golf club head according to claim 1. 3. The loft angle as a base is 35 to 60.
A golf club head shape according to claim 1 or 2 selected from clubs in the range of °.