JPH09294833A - Head of golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To turn the whole surface of a face of a head into a sweet spot in addition to just increasing in the so-called sweet area in the face of the head, also lessen a useless loss of impact energy caused by rotation of the head due to an impact in hitting a ball, enlarge the flying distance of a ball, and improve the directional performance of a ball by installing a body of a special form in the hollow inner space of a metal head of a golf club. SOLUTION: In a shell-like hollow inner part of a metal head of a golf club, two bodies 14, 16 respectively having special inclined faces 13, 14 are installed on the inner surface a little to the toe 4 of the head and on the inner surface a little to the heel on the neck 5 side of the head, the bodies are made closely adhere to the inner surface of the back of the club face and the hollow inner part wall of the head to be bonded, further a vertical post 11 is erected in the center of the inner surface 9 forming the back of the face, and the tip thereof is made adhere to the inner wall of an outer shell 8 forming the shell- like hollow part of the head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention aims to expand the so-called sweet area of the club head face by installing a specially shaped object inside the hollow portion of the golf club head, and at the same time when hitting a golf ball. It is possible to increase the flight distance of the ball and accurately realize the aim of the ball in the flight direction.

[0002]

2. Description of the Related Art In a wood-type metal head of a golf club, the inside has a hollow structure, and its weight distribution is distributed to the entire outer periphery of a shell-shaped hollow portion. It is said that because of the large size, the miss shot is unlikely to occur and the directionality of the ball is also good, and as the material of the metal head becomes light metal with a small specific gravity, the head becomes larger, so by deepening the depth of the center of gravity of the head. Although it is possible to increase the sweet area, it is hard to say that the flight distance and directionality of the ball have been improved. This is because the drawback of the so-called Decahead, that is, the sweet area is blurred. So that the flying ball does not hook,
Some heads try to improve the directionality of the ball by making the heel part of the head particularly thick, but there is a limit to that, and the repulsive force at the time of hitting is improved over the entire face of the head, and the flight distance of the ball is improved. The effect of extending it is difficult to expect. In order to distribute the weight distribution of the head elsewhere, the thickness of the face part of the head is made small, especially because the meat on the back side of the face plate at the center of the face is scraped off, so the effect when just meet is offset. is there.

[0003]

[Problems to be Solved by the Invention] As described above,
In metal heads, the material is to use light metal whose specific gravity is smaller and smaller, and nowadays the so-called decahead is becoming the norm, so the center of gravity of the head is far from the face surface, which makes the sweet area wider and larger. On the other hand, because the sweet spot of Just Meat is not specified, it has the negative effect of blurring,
Even if the effects at the time of hitting the ball are averaged over the entire face and the number of miss shots is reduced, it does not mean that the performance as a club head is further enhanced. That is, the fact that the effect at the time of impact of the ball is averaged over the entire surface of the head face and that the effect at the time of impact is further enhanced are essentially separate problems, and some special measures must be taken. In that case, the two would not be compatible with each other. The present invention makes the sweet spot over the entire face of the head by taking the special means, and further enhances the repulsion effect of the ball at the time of impact over the entire face, thereby making it possible to realize a deca-headed metal head. It aims to eliminate the drawbacks.

[0004]

The structure of the head of the golf club according to the present invention is as follows. (A) In the hollow interior 1 of the club head, one surface has a surface 13 having an inclination with the inner surface 9 on the back side of the face portion 6 closer to the toe of the head than the central portion of the face of the head, and An object 14 in which other surfaces than the surface 13 are closely attached to the inner surface 9 and the inner surface of the outer wall of the shell-shaped hollow portion of the head near the toe is installed. (B) In the hollow interior 1 of the club head, one surface has a surface 15 having an inclination with the inner surface 9 on the back side of the portion 7 of the face closer to the heel of the neck of the head than the center of the face of the head. Further, an object 16 in which the other surface than the surface 15 is closely adhered to the inner surface 9 and the inner surface of the outer wall 8 of the shell-shaped hollow portion of the head near the heel of the neck side is installed. (C) In the hollow interior 1 of the club head, a column is installed at the center of the inner surface 9 that is the back side of the face of the head, standing upright perpendicular to this inner surface and having its tip bonded to the inner surface of the shell hollow portion of the head. The present invention is configured as described above.

[0005]

The action of impact at the time of hitting a ball when the head of the golf club according to the present invention is used will be described in the following three points. (1) Actions of the objects 14 and 16 When the impact is made in the vicinity of the face 6 or 7 near the face other than the center 10 of the face of the head, that is, at a position deviated from the just meat, it adheres to the inner surface of the head, respectively. Since the objects 14 and 16 are present, the wall thickness of the face at the place where the ball has an impact is reinforced, and the objects 14 and 16 are both on the inner surface 9 of the face and have a slope with an acute angle. 13 and 1
5, the reinforcement thickness of the face gradually increases as the degree of deviation from the position of the center 10 of the face increases, so that the repulsive force of the ball at the time of impact is also reinforced. . (2) Action of slopes 13 and 15 of objects 14 and 16 The forces acting on the face at the time of impact of the ball are dispersed and absorbed by the outer wall 8 of the hollow shell of the head through the slope 13 of object 14 or the slope 15 of object 16, respectively. Therefore, regardless of the impact of the head on the face toward the toe or the impact on the face toward the heel, the effect of causing the so-called blurring by rotating the head is reduced, so that the direction of flight of the ball is improved. become. (3) Action of the pillar 11 In order to reduce the weight of the metal head,
Since the meat of the face is cut away on the back side of the face plate in the center of the face to create a cavity and the weight is distributed to the other parts that make up the head, even in the case of so-called just meat, its impact The effect of ball repulsion due to is likely to be diminished. That is, as in the well-known theory "ground effect during takeoff" that an aircraft receives lift from the ground during takeoff in aeronautical engineering, a pillar 11 that stands vertically at the center of the inner surface on the back side of the cavity. As a result, the effect of repulsing the ball at the time of just meet is eliminated, and at the same time, the effect of ensuring the repulsive force of the ball due to the impact over the entire face of the head in combination with the installation of the objects 14 and 16 described above. do.

[0006]

Embodiments of the present invention will be described below. (A) Inside the hollow inside of the club head, the inner surface of the back side of the head has a surface having an inclination at an acute angle, and the other surfaces than this surface are the inner surface on the back side of the face and the shell of the head. Objects to be closely adhered to the inner surface of the outer contour of the hollow portion are installed at a position closer to the toe of the head and a position closer to the heel of the neck of the head than the center of the inner surface of the head facing the face. That is, the objects 14 and 16 shown in the drawing are such objects. (B) At the center of the inner surface of the club head, which is the back side of the face, a column is erected perpendicularly to this inner surface, and its tip is bonded to the inner surface of the outer shell of the hollow shell of the head. That is, 11 shown in the drawing is that. (C) There is room to use a so-called deca-head for the head by using titanium or other light metal having a small specific gravity as a material forming the metal head to reduce the weight of the head.
Since this room can be diverted and replaced with the installation of the objects (a) and (b) described above, the installation of these objects is practically sufficient. In addition, since the moment of inertia of the head increases due to the installation of these objects, even if the sweet spot is removed and impacted, it acts to prevent the shake due to the rotation of the head, and the directionality of the ball can be improved. The above relationships (a), (b), and (c) are related to the balance of the entire head by adjusting and distributing the wall thickness of the face part that composes the head and the wall thickness of the shell-shaped hollow part of the head. At the same time, the depth of the center of gravity of the head can be adjusted.

[0007]

According to the present invention, the sweet area in the face of the club head is not simply increased, but sweet spots can be formed all over the face of the head, and at the same time, the sweet spot is lost due to the rotation of the head upon impact. This not only reduces wasted energy consumption and extends the flight distance of the ball, but also improves the directionality of the ball.

[Brief description of drawings]

FIG. 1 is a structural view for showing the basic structure of a golf club head according to the present invention and for explaining the principle of its operation. Particularly, the hatched portion is a cross section of the object portion.

[Explanation of symbols]

1 Hollow inside of the head 2 Head face 3 Part of the face that is hollowed out by removing the thickness of the face behind the face plate 4 Head toe part 5 Head neck 6 Head toe from the center of the face The part near 7 The part near the heel of the neck from the center of the face of the head 8 The outer shell of the hollow shell of the head 9 The inner surface of the back of the face of the head 10 The center of the face plate of the head 11 The back of the face of the head A column that stands upright to the inner surface at the center of the inner surface 12 A portion where the tip of the column is bonded to the inner wall of the outer shell of the hollow shell of the head 13 Inside the hollow of the head, the inner surface of the head on the back side of the face and the hollow Slope of the object which adheres closely to both the toe-side parts of the inner wall of the part 14 the object having the aforementioned slope 15 f In the hollow interior of Dodo, the object having an inclined surface 16 the slope of the object adhered in close contact with both the heel side of the portion of the inner wall of the inner surface and the hollow portion of the neck side heel side of the back side of Fuesu head

Claims (3)

[Claims] 1. A hollow interior 1 of a golf club head, which has a surface 13 having an inclination at an acute angle with an inner surface 9 which is the back side of a face 6 at a portion closer to the toe of the head than the center of the face of the club head. A club head having surfaces 14 other than 13 adhered to the inner surface 9 and the inner surface of the toe side portion of the inner surface of the shell 8 of the hollow shell of the head. 2. A golf club head has a hollow inner portion (1) having a surface (15) having an acute inclination with an inner surface (9) which is a back side of a face (7) which is closer to the neck side heel of the club head than a central part of the face. A club head having a surface 16 other than the surface 15 adhered to the inner surface 9 and the inner surface of the inner surface of the outer shell 8 of the shell-shaped hollow portion of the head near the heel. 3. A club having a pillar 11 in the hollow interior 1 of the club head, the pillar 11 standing perpendicular to the surface 9 at the center of the inner surface 9 which is the back side of the face and having its tip bonded to the inner wall 12 of the shell-shaped hollow portion of the head. head.