JPH07246260A - Golf club head - Google Patents

Abstract

PURPOSE:To lengthen the flying distance of ball fitting by specifically specifying the shape and structure of the face of a club head. CONSTITUTION:The face part of this golf club head is composed of an outer face 5 which is a fitting face and an inner face 6 which is disposed on the inner side of the outer face. A hermetically closed gas layer 7 is formed between the outer face 5 and the inner face 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head, and more particularly to a golf club head having a club face having a feature to improve the flight distance of a hit ball.

[0002]

2. Description of the Related Art Golf club heads have been variously improved for the purpose of extending the flight distance of hit balls. However, most of them relate to the material and composition of the face of the club head. In addition, what is different is that the striking face and striking face are composed of at least two layers having a striking face formed of a vibration-proof alloy and a resin layer made of a viscoelastic polymer adhered to the back side thereof. It has been proposed that the resin layer adhered to the back surface of the above-mentioned device suppresses vibrations at the time of hitting a ball (Japanese Patent Laid-Open No. 3-7178).

[0003]

The present invention, which is different from these conventional improvements, was devised on the basis of a completely new idea, that is, not the material forming the face of the club head, but the material of the club head. It is intended to improve the flight distance of a hit ball by giving the shape and structure of the face a characteristic.

[0004]

In order to achieve the above object, the technical means adopted by the present invention is an outer face which hits the face portion of a golf club head, and an inner face which is provided inside the outer face. -A face, and a closed gas layer is formed between the outer face and the inner face, preferably the outer face has a curved convex surface, and the inner face is in a plate shape. It is characterized by being formed. Further, in order to stabilize the directionality of the club head, an elongated convex portion that regulates the contact between the bottom surface and the ground over the direction perpendicular to the face portion is provided on the bottom surface of the golf club head. Should be provided.

[0005]

When the club head configured as described above hits the golf ball, the impact at the time of impact causes outer wear
The face is deformed. Due to the deformation of the outer face, the gas, such as air, sealed in the space between the outer face and the inner face is compressed, and the repulsive force of the outer face and the reaction of the compressed air are combined. As a result, it becomes possible to fly the golf ball further. In the golf club head provided with an elongated protrusion on the bottom surface of the sole portion of the golf club head in a direction orthogonal to the face portion, the contact portion between the club head and the ground is restricted. By reducing the amount of ground, resistance from the ground is reduced, the club is easy to swing out, and the directionality is stable.

[0006]

1 is a perspective view of a club head according to the present invention, in which the club head 1 is a metal wood, the basic structure of which is the same as that of a conventional club head. 3 and a crown portion 4.

FIG. 3 shows B of the club head 1 in FIG.
FIG. 3 is a sectional view taken along line B, and as shown in FIG.
Is composed of an outer face 5 having a desired curved convex surface that functions as a striking surface, and an inner face 6 provided inside the outer face 5. The outer face 5 has a curved shape, while the inner face 6 is a rectangular plate, and the outer peripheral surface of the inner face 6 is an outer plate.
The air layer 7 is formed between the outer face 5 and the inner face 6 by being fixed to the back side of the striking face of the face 5. R of outer face 5 is 2
It is preferably about 50 mm to 265 mm, and the linear distance between the curved convex top of the outer face 5 and the inner face 6 is preferably about 0.8 mm to 1 mm. The outer face 5 is selected from materials that are deformed to a desired degree when hit with a golf ball, and for example, known materials such as pure titanium and titanium alloy are used.

As shown in FIGS. 2 and 3, on the bottom surface of the sole portion 3 along the direction orthogonal to the face portion 2, that is, the moving direction of the club head 1 when hitting a golf ball,
Two elongated projections 8 are formed parallel to each other to regulate the contact between the bottom surface and the ground. This allows the club head 1
It is possible to reduce the contact surface between the ground and the ground, reduce the resistance from the ground, make it easy for the club to swing out, and stabilize the direction. Further, the convex portion 8 is formed so as to wrap around from the bottom surface of the sole portion 3 to the back surface thereof, thereby ensuring the low center of gravity of the club head 1. In FIG. 2, reference numeral 9 is a balance weight, which is designed to balance the entire club head 1 by forming the face portion 2 in a double structure.

FIG. 4 is an exploded perspective view showing a method for manufacturing the club head 1. The club head 1 is divided into a portion composed of an outer face 5 and a sole portion 3, an inner face 6 and a crown portion 4. , Each member and fosel part 10
Are fixed to form the club head 1. Each member is formed into a desired shape by a stamping manufacturing method, and the club head 1 is formed by welding them. As described above, the club head 1 is formed separately by the conventional lost wax method, and the club head 1 is formed by welding them. Therefore, the inner face 6 is formed on the back surface of the outer face 5.
Then, the crown portion 4 and the fossel portion 10 may be fixed together, and the face portion 2 can have a double structure of the outer face 5 and the inner face 6 by a simple means. The mode of division of the club head is not limited to that of the embodiment, and for example, the outer face 5 and the sole portion 3 may be formed as separate members and welded.

When a golf ball is hit with the club head 1 constructed as described above, the outer face 5 is deformed by the impact at the time of impact. Due to the deformation of the outer face 5, the air sealed between the outer face 5 and the inner face 6 is compressed, and the repulsive force of the outer face 5 and the reaction of the compressed air are combined. , It becomes possible to fly the ball further. Since the air layer 7 formed between the outer face 5 and the inner face 6 has an extremely small volume, it is considered that a strong compressive force acts on the air layer.

Although the metal wood head is shown in the embodiment, the present invention is not limited to this, and the double-structured face portion of the present invention may be used for a carbon head or a hollow iron head. it can. However, in such a case, the club head manufacturing method is different from that of the embodiment. Also, the outer face 5
The space formed between the inner face 6 and the inner face 6 is not limited to air, but may be another known gas.

[0012]

INDUSTRIAL APPLICABILITY According to the present invention, the face portion of the golf club head is composed of an outer face serving as a striking surface and an inner face provided inside the outer face, and between the outer face and the inner face. It is characterized by forming a closed gas layer, preferably, the outer face has a curved convex surface, the inner face is formed in a plate shape, so the following It produces a particularly remarkable effect. (1) At the moment of impact between the golf ball and the club head, the outer face, which is the striking surface, is deformed, and the gas sealed between the outer face and the inner face is compressed. The repulsive force and the reaction of the compressed air combine to allow the ball to fly farther. (2) Since the gas layer is formed between the outer face and the inner face, the so-called sweep spot is large, and even a beginner can accurately catch the ball. (3) In the golf club head provided with an elongated convex portion on the bottom surface of the sole portion of the golf club head in a direction orthogonal to the face portion to regulate the contact between the bottom surface and the ground, By reducing the contact surface between and, the resistance from the ground is reduced, the club is easy to swing out, and the directionality is stable. Therefore, due to the synergistic effect with the above effect,
It is possible to extend the flight distance of the golf ball.

[Brief description of drawings]

FIG. 1 is a perspective view of a golf club head.

FIG. 2 is a sectional view taken along the line AA of the golf club head.

FIG. 3 is a sectional view taken along line BB of the golf club head.

FIG. 4 is an exploded perspective view of the golf club head showing the method for manufacturing the golf club head.

[Explanation of symbols]

 1 Golf Club Head 2 Face Part 3 Soles Part 4 Crown Part 5 Outer Face 6 Inner Face 7 Air Layer 8 Convex Part 9 Balance Weight 10 Fauzel Part

Claims (3)

[Claims] 1. A gas comprising a golf club head having an outer face serving as a striking face portion and an inner face provided inside the outer face, and a gas sealed between the outer face and the inner face. A golf club head having a layer formed thereon. 2. The golf club head according to claim 1, wherein the outer face has a curved convex surface, and the inner face is formed in a plate shape. 3. A golf club head is provided with an elongated convex portion on the bottom surface of a sole portion of the golf club head in a direction orthogonal to the face portion to regulate contact between the bottom surface and the ground. The golf club head according to claim 1 or 2.