JPH08196664A - Golf club head - Google Patents

Abstract

PURPOSE: To provide a lightweight golf club head having an excellent flight effect by protruding reinforcing ribs on the inner face of the golf club head made of a metal and formed with a hollow section inside. CONSTITUTION: Three members consisting of a face section 2, an upper shell section 3, and a lower shell section 6 erected with a peripheral wall 5 on a bottom section 4 are properly welded to form a hollow golf club head made of a metal. The face section 2, upper shell section 3, and lower shell section 6 are manufactured by press machining respectively, and reinforcing ribs 1 are formed on their back faces at the time of press machining. The reinforcing ribs 1 are radially extended from one point (a), regular hexagon ribs are vertically and diagonally arranged in the adjacent state, and star ribs and proper ribs are sporadically arranged. A metal having large specific gravity is used to form the thin high-strength head, and it has an excellent flight effect and is made lightweight at the same time.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a lightweight golf club head.

[0002]

2. Description of the Related Art Conventionally, various attempts have been made to make a head with a thin material in order to make the head as lightweight as possible.

However, if the strength is deteriorated to the extent that the weight reduction, that is, the thickness reduction, is pursued, it cannot be realized as a product.

For example, when the face portion is made thin, a repulsive force is exerted and the ball flies, but there is a problem in that a dent is formed due to the impact with the ball due to repeated continuous use.

However, conversely, there is a limit to the thickness increase. For example, if the face portion is made too thick, the repulsive force will deteriorate,
Since the flight of the ball is inferior and the center of gravity of the head is located on the front side of the head (the front side of the head is where the face portion is present), there is a drawback in that the ball is difficult to fly.

Therefore, the thinning and the thickening of the head must satisfy the contradictory requirements, so that each manufacturer repeats various trial and error.

The present invention provides a golf club head which solves the above drawbacks.

[0008]

The gist of the present invention will be described with reference to the accompanying drawings.

A golf club head made of metal and having a hollow portion formed therein, and a reinforcing rib 1 on the inner surface of the head.
The present invention relates to a golf club head, which is characterized in that

A golf club head in which a plurality of metal split shells are connected by an appropriate means to form a hollow inside, and a reinforcing rib 1 is projected on the back surface of each split shell. The present invention relates to a golf club head.

A hollow metal golf club head made of three members including a face portion 2, an upper shell portion 3, and a lower shell portion 6 in which a peripheral wall 5 is erected on a bottom portion 4, and at least a back surface of the face portion 2 is reinforced. The present invention relates to a golf club head having ribs 1 projectingly provided.

A golf club head according to any one of claims 1 to 3, wherein an omnidirectional rib extending from one point in a radial direction is adopted as the reinforcing rib 1. It is related.

[0013]

The presence of the reinforcing rib 1 makes it possible to provide the head with a required strength without thickening the wall.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show one embodiment of the present invention.
This will be described below.

In this embodiment, as shown in FIG. 1, a metal is formed by appropriately welding three members of a face portion 2, an upper shell portion 3 and a lower shell portion 6 in which a peripheral wall 5 is erected on a bottom portion 4 (for example, , Stainless steel, titanium, etc.) hollow golf club head.

The face portion 2, the upper shell portion 3 and the lower shell portion 6 are formed by press working, respectively. At the time of this press working, the reinforcing ribs 1 shown in FIG. 2 are formed on the respective back surfaces.

The reinforcing rib 1 is a rib extending radially from a point a. In the drawing, regular hexagonal ribs are vertically and diagonally arranged side by side, and star-shaped ribs and appropriate ribs are provided in some places. It is arranged. As a result of actual results, it was confirmed that the rib of this shape is the most preferable, and the strength of this shape is 20 to 30% higher than that of a member having the same thickness. Therefore, by forming the rib of this shape, the thickness of each member can be reduced by several mm.

It is not preferable that the reinforcing rib 1 is a unidirectional rib, for example, only in the vertical direction and only in the horizontal direction.
This is because it is unknown in what direction (angle) the ball hits the face portion 2. Therefore, the omnidirectional rib as in this embodiment is desirable.

Reference numeral 7 is a neck portion.

Since the present embodiment is constructed as described above, it is possible to form a thin and high-strength head by using a metal having a large specific gravity. Therefore, even if the head volume is increased, the strength is increased. The head does not become a heavy head, and since the strength of the face portion 2 can be increased while being thin, the repulsive force of the face portion 2 is not deteriorated and the center of gravity is not located on the front side.
Therefore, a lightweight and high-strength golf club head having an excellent jumping effect is obtained.

[0021]

As described above, the present invention provides a lightweight golf club head.

[Brief description of drawings]

FIG. 1 is a perspective view of the present embodiment.

FIG. 2 is an exploded perspective view showing the back surfaces of the various parts of this embodiment so that they can be seen.

[Explanation of symbols]

 1 Reinforcement rib 2 Face part 3 Upper shell part 4 Bottom part 5 Circumferential wall 6 Lower shell part

Claims (4)

[Claims] 1. A golf club head which is made of metal and has a hollow portion formed therein, wherein a reinforcing rib is projected on an inner surface of the head. 2. A golf club head in which a plurality of metallic split shells are connected by an appropriate means to form a hollow portion inside, and a reinforcing rib is projected on the back surface of each split shell. A characteristic golf club head. 3. A metal hollow golf club head comprising three members, a face portion, an upper shell portion, and a lower shell portion having a peripheral wall erected on the bottom portion, wherein a reinforcing rib is projected on at least the back surface of the face portion. A golf club head characterized by the above. 4. The golf club head according to claim 1, wherein an omnidirectional rib extending from one point in a radial direction is adopted as a reinforcing rib. .